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Wikner A, Johansson K, Enocson E, Sthen Bergdahl M, Hansson L, Rydberg A, Sandberg C. Lower bone strength in young patients with Fontan circulation compared to controls. Cardiol Young 2024:1-6. [PMID: 38450512 DOI: 10.1017/s1047951124000404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
OBJECTIVES Previous reports indicate bone deficits in patients with Fontan circulation. However, the consequences of these deficits on bone strength and when these changes occur are unclear. AIM To compare the tibial bone strength-strain index between young patients (6-19 years) with Fontan circulation and age- and sex-matched controls, and to determine strength-strain-index in subgroups of children (6-12 years) and adolescents (13-19 years) versus controls. METHOD The tibia was examined with peripheral quantitative CT. Based on the assessed data, bone strength-strain index was calculated in the lateral and anterior-posterior directions. RESULTS Twenty patients with Fontan and twenty controls (mean age 13.0 ± 4.4 years; 50% females) were examined. Patients had a lower strength-strain index in the lateral direction compared to controls (808.4 ± 416.8mm3 versus 1162.5 ± 552.1mm3, p = 0.043). Subgroup analyses showed no differences regarding strength-strain index in children (6-12 years) with Fontan circulation compared to controls. However, the adolescents (13-19 years) with Fontan circulation had lower strength-strain indexes in both the lateral and anterior-posterior directions compared to controls (1041.4 ± 299.8mm3 versus 1596.4 ± 239.6mm3, p < 0.001, and 771.7 ± 192.4mm3 versus 1084.9 ± 215.0mm3, p = 0.004). When adjusted for height, there were differences between patients (6-19 years) and controls in strength-strain indexes in both the lateral and anterior-posterior directions. In subgroup analyses, the results remained robust. CONCLUSION Young patients (6-19 years) with Fontan circulation have a lower strength-strain index in the tibia compared to controls. Subgroup analyses show that this deficit is mainly driven by the differences in adolescents (13-19 years), which might suggest that bone strength decreases with age.
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Affiliation(s)
- Anna Wikner
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Karna Johansson
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Elin Enocson
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | | | - Lena Hansson
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Annika Rydberg
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Camilla Sandberg
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden
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2
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Lundström A, Wiklund U, Winbo A, Eliasson H, Karlsson M, Rydberg A. Cardiac response to water activities in children with Long QT syndrome type 1. PLoS One 2023; 18:e0295431. [PMID: 38060596 PMCID: PMC10703314 DOI: 10.1371/journal.pone.0295431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Swimming is a genotype-specific trigger in long QT syndrome type 1 (LQT1). OBJECTIVE To examine the autonomic response to water activities in children and adolescents with LQT1. METHODS In this cross-sectional study, LQT1 patients were age and sex matched to one healthy control subject. Electrocardiograms (ECGs) were recorded during face immersion (FI), swimming, diving, and whole-body submersion (WBS). Heart rate (HR) and heart rate variability (HRV) was measured. The high frequency (HF) component of HRV was interpreted to reflect parasympathetic activity, while the low frequency (LF) component was interpreted as reflecting the combined influence of sympathetic and parasympathetic activity on autonomic nervous modulation of the heart. RESULTS Fifteen LQT1 patients (aged 7-19 years, all on beta-blocker therapy) and fifteen age and sex matched non-medicated controls were included. No significant ventricular arrhythmias were observed in the LQT1 population during the water activities. Out of these 15 matched pairs, 12 pairs managed to complete FI and WBS for more than 10 seconds and were subsequently included in HR and HRV analyses. In response to FI, the LQT1 group experienced a drop in HR of 48 bpm, compared to 67 bpm in the control group (p = 0.006). In response to WBS, HR decreased by 48 bpm in the LQT1 group and 70 bpm in the control group (p = 0.007). A significantly lower PTOT (p < 0.001) and HF (p = 0.011) component was observed before, during and after FI in LQT1 patients compared with the controls. Before, during and after WBS, a significantly lower total power (p < 0.001), LF (p = 0.002) and HF (p = 0.006) component was observed in the LQT1 patients. CONCLUSION A significantly lower HR decrease in response to water activities was observed in LQT1 subjects on beta-blocker therapy, compared to matched non-medicated controls. The data suggests an impaired parasympathetic response in LQT1 children and adolescents. An aberrant autonomic nervous system (ANS) response may cause an autonomic imbalance in this patient group.
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Affiliation(s)
- Anna Lundström
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Urban Wiklund
- Department of Radiation Sciences, Radiation Physics, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Annika Winbo
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Håkan Eliasson
- Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
| | - Marcus Karlsson
- Department of Radiation Sciences, Radiation Physics, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
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3
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Dahlberg P, Axelsson KJ, Rydberg A, Lundahl G, Gransberg L, Bergfeldt L. Spatiotemporal repolarization dispersion before and after exercise in patients with long QT syndrome type 1 versus controls: probing into the arrhythmia substrate. Am J Physiol Heart Circ Physiol 2023; 325:H1279-H1289. [PMID: 37773058 DOI: 10.1152/ajpheart.00335.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 09/30/2023]
Abstract
Congenital long QT syndrome (LQTS) carries an increased risk for syncope and sudden death. QT prolongation promotes ventricular extrasystoles, which, in the presence of an arrhythmia substrate, might trigger ventricular tachycardia degenerating into fibrillation. Increased electrical heterogeneity (dispersion) is the suggested arrhythmia substrate in LQTS. In the most common subtype LQT1, physical exercise predisposes for arrhythmia and spatiotemporal dispersion was therefore studied in this context. Thirty-seven patients (57% on β-blockers) and 37 healthy controls (mean age, 31 vs. 35; range, 6-68 vs. 6-72 yr) performed an exercise test. Frank vectorcardiography was used to assess spatiotemporal dispersion as Tampl, Tarea, the ventricular gradient (VG), and the Tpeak-end interval from 10-s signal averages before and 7 ± 2 min after exercise; during exercise too much signal disturbance excluded analysis. Baseline and maximum heart rates as well as estimated exercise intensity were similar, but heart rate recovery was slower in patients. At baseline, QT and heart rate-corrected QT (QTcB) were significantly longer in patients (as expected), whereas dispersion parameters were numerically larger in controls. After exercise, QTpeakcB and Tpeak-endcB increased significantly more in patients (18 ± 23 vs. 7 ± 10 ms and 12 ± 17 vs. 2 ± 6 ms; P < 0.001 and P < 0.01). There was, however, no difference in the change in Tampl, Tarea, and VG between groups. In conclusion, although temporal dispersion of repolarization increased significantly more after exercise in patients with LQT1, there were no signs of exercise-induced increase in global dispersion of action potential duration and morphology. The arrhythmia substrate/mechanism in LQT1 warrants further study.NEW & NOTEWORTHY Physical activity increases the risk for life-threatening arrhythmias in LQTS type 1 (LQT1). The arrhythmia substrate is presumably altered electrical heterogeneity (a.k.a. dispersion). Spatiotemporal dispersion parameters were therefore compared before and after exercise in patients versus healthy controls using Frank vectorcardiography, a novelty. Physical exercise prolonged the time between the earliest and latest complete repolarization in patients versus controls, but did not increase parameters reflecting global dispersion of action potential duration and morphology, another novelty.
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Affiliation(s)
- Pia Dahlberg
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Region Vaestra Goetaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Karl-Jonas Axelsson
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Region Vaestra Goetaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Annika Rydberg
- Division of Pediatrics, Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Gunilla Lundahl
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lennart Gransberg
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lennart Bergfeldt
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Region Vaestra Goetaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
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Kaizer AM, Winbo A, Clur SAB, Etheridge SP, Ackerman MJ, Horigome H, Herberg U, Dagradi F, Spazzolini C, Killen SAS, Wacker-Gussmann A, Wilde AAM, Sinkovskaya E, Abuhamad A, Torchio M, Ng CA, Rydberg A, Schwartz PJ, Cuneo BF. Effects of cohort, genotype, variant, and maternal β-blocker treatment on foetal heart rate predictors of inherited long QT syndrome. Europace 2023; 25:euad319. [PMID: 37975542 PMCID: PMC10655062 DOI: 10.1093/europace/euad319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/16/2023] [Indexed: 11/19/2023] Open
Abstract
AIMS In long QT syndrome (LQTS), primary prevention improves outcome; thus, early identification is key. The most common LQTS phenotype is a foetal heart rate (FHR) < 3rd percentile for gestational age (GA) but the effects of cohort, genotype, variant, and maternal β-blocker therapy on FHR are unknown. We assessed the influence of these factors on FHR in pregnancies with familial LQTS and developed a FHR/GA threshold for LQTS. METHODS AND RESULTS In an international cohort of pregnancies in which one parent had LQTS, LQTS genotype, familial variant, and maternal β-blocker effects on FHR were assessed. We developed a testing algorithm for LQTS using FHR and GA as continuous predictors. Data included 1966 FHRs at 7-42 weeks' GA from 267 pregnancies/164 LQTS families [220 LQTS type 1 (LQT1), 35 LQTS type 2 (LQT2), and 12 LQTS type 3 (LQT3)]. The FHRs were significantly lower in LQT1 and LQT2 but not LQT3 or LQTS negative. The LQT1 variants with non-nonsense and severe function loss (current density or β-adrenergic response) had lower FHR. Maternal β-blockers potentiated bradycardia in LQT1 and LQT2 but did not affect FHR in LQTS negative. A FHR/GA threshold predicted LQT1 and LQT2 with 74.9% accuracy, 71% sensitivity, and 81% specificity. CONCLUSION Genotype, LQT1 variant, and maternal β-blocker therapy affect FHR. A predictive threshold of FHR/GA significantly improves the accuracy, sensitivity, and specificity for LQT1 and LQT2, above the infant's a priori 50% probability. We speculate this model may be useful in screening for LQTS in perinatal subjects without a known LQTS family history.
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Affiliation(s)
- Alexander M Kaizer
- Biostatistics and Informatics, Colorado School of Public Health, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | - Annika Winbo
- Department of Clinical Sciences, Pediatrics, Umeå University, Umea, Sweden
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Sally-Ann B Clur
- Department of Pediatric Cardiology, Emma Children’s Hospital, Amsterdam University Medical Centers, Amsterdam, The Netherlands
- Department of Cardiology, University Medical Center, Amsterdam, The Netherlands
| | - Susan P Etheridge
- Department of Pediatrics, Division of Cardiology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Michael J Ackerman
- Department of Cardiovascular Medicine, Division of Heart Rhythm Services, Mayo Clinic, Rochester, MN, USA
- Department of Pediatric and Adolescent Medicine, Division of Pediatric Cardiology, Mayo Clinic, Rochester, MN, USA
- Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
- Windland Smith Rice Genetic Heart Rhythm Clinic and Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Hitoshi Horigome
- Department of Pediatrics, Section of Cardiology, Tsukuba University, Tsukuba, Japan
| | - Ulrike Herberg
- Department of Pediatric Cardiology, RWTH University Hospital Aachen, Aachen, Germany
- Department of Pediatric Cardiology, University Hospital Bonn, Bonn, Germany
| | - Federica Dagradi
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 2015 Milan, Italy
| | - Carla Spazzolini
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 2015 Milan, Italy
| | - Stacy A S Killen
- Department of Pediatrics, Division of Cardiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Annette Wacker-Gussmann
- Department of Congenital Heart Disease and Paediatric Cardiology, German Heart Center, Munich, Germany
| | - Arthur A M Wilde
- Department of Cardiology, University Medical Center, Amsterdam, The Netherlands
- Department of Cardiology, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Department of Cardiology, Amseterdam University Medical Center, Amsterdam, The Netherlands
| | - Elena Sinkovskaya
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Alfred Abuhamad
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Margherita Torchio
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 2015 Milan, Italy
| | - Chai-Ann Ng
- Mark Cowley Lidwill Research Program in Cardiac Electrophysiology, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
- The School of Clinical Medicine, UNSW Sydney, Darlinghurst, New South Wales, Australia
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umea, Sweden
- Department of Cardiology, University Medical Center, Amsterdam, The Netherlands
| | - Peter J Schwartz
- Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 2015 Milan, Italy
| | - Bettina F Cuneo
- Department of Pediatrics, Section of Cardiology, University of Denver School of Medicine, 13123 16th Ave, Box 100, Aurora, CO 80045, USA
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5
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Bratt EL, Mora MA, Sparud-Lundin C, Saarijärvi M, Burström Å, Skogby S, Fernlund E, Fadl S, Rydberg A, Hanseus K, Kazamia K, Moons P. Effectiveness of the STEPSTONES Transition Program for Adolescents With Congenital Heart Disease-A Randomized Controlled Trial. J Adolesc Health 2023; 73:655-663. [PMID: 37032211 DOI: 10.1016/j.jadohealth.2023.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 01/22/2023] [Accepted: 02/13/2023] [Indexed: 04/11/2023]
Abstract
PURPOSE Adolescents with congenital heart disease transition from childhood to adulthood and transfer from pediatric-oriented to adult-oriented care. High-level empirical evidence on the effectiveness of transitional care is scarce. This study investigated the empowering effect (primary outcome) of a structured person-centered transition program for adolescents with congenital heart disease and studied its effectiveness on transition readiness, patient-reported health, quality of life, health behaviors, disease-related knowledge, and parental outcomes e.g., parental uncertainty, readiness for transition as perceived by the parents (secondary outcomes). METHODS The STEPSTONES-trial comprised a hybrid experimental design whereby a randomized controlled trial was embedded in a longitudinal observational study. The trial was conducted in seven centers in Sweden. Two centers were allocated to the randomized controlled trial-arm, randomizing participants to intervention or control group. The other five centers were intervention-naïve centers and served as contamination check control group. Outcomes were measured at the age of 16 years (baseline), 17 years, and 18.5 years. RESULTS The change in empowerment from 16 years to 18.5 years differed significantly between the intervention group and control group (mean difference = 3.44; 95% confidence interval = 0.27-6.65; p = .036) in favor of intervention group. For the secondary outcomes, significant differences in change over time were found in parental involvement (p = .008), disease-related knowledge (p = .0002), and satisfaction with physical appearance (p = .039). No differences in primary or secondary outcomes were detected between the control group and contamination check control group, indicating that there was no contamination in the control group. DISCUSSION The STEPSTONES transition program was effective in increasing patient empowerment, reducing parental involvement, improving satisfaction with physical appearance, and increasing disease-related knowledge.
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Affiliation(s)
- Ewa-Lena Bratt
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Children's Heart Center, Gothenburg, Sweden.
| | - Mariela Acuna Mora
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Academy of Caring Science, Work Life and Social Welfare, University of Borås, Sweden
| | - Carina Sparud-Lundin
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Markus Saarijärvi
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Learning, Informatics, Management and Ethics, Medical Management Centre, Karolinska Institutet, Stockholm, Sweden
| | - Åsa Burström
- Department of Neurobiology, Care Sciences and Society Karolinska Institutet, Stockholm, Sweden
| | - Sandra Skogby
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Paediatric Cardiology, The Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Eva Fernlund
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; Division of Paediatrics, Crown Princess Victoria Childreńs Hospital, Linköping University Hospital, Linköping, Sweden; Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, paediatric Cardiology, Lund, Sweden
| | - Shalan Fadl
- Department of Paediatrics, Örebro University Hospital, Örebro, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Katarina Hanseus
- Children's Heart Centre, Skåne University Hospital Lund, Lund, Sweden
| | - Kalliopi Kazamia
- Children's Heart Centre Stockholm-Uppsala, Karolinska University Hospital and Akademiska University Hospital, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Philip Moons
- Institute of Health and Care Science, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; KU Leuven, Department of Public Health and Primary Care, Leuven, Belgium; Department of Paediatrics and Child Health, University of Cape Town, Cape Town, South Africa
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6
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van der Crabben SN, Mörner S, Lundström AC, Jonasson J, Bikker H, Amin AS, Rydberg A, Wilde AAM. Should variants of unknown significance (VUS) be disclosed to patients in cardiogenetics or not; only in case of high suspicion of pathogenicity? Eur J Hum Genet 2022; 30:1208-1210. [PMID: 36008533 PMCID: PMC9626604 DOI: 10.1038/s41431-022-01173-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/16/2022] [Accepted: 08/06/2022] [Indexed: 02/04/2023] Open
Affiliation(s)
- Saskia N van der Crabben
- Department of Clinical Genetics, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands.
| | - Stellan Mörner
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Anna C Lundström
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Clinical Science, Umeå University, Umeå, Sweden
| | - Jenni Jonasson
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Medical Biosciences, Mecial and Clinical Genetics, Umeå University, Umeå, Sweden
| | - Hennie Bikker
- Department of Clinical Genetics, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
| | - Ahmad S Amin
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences Amsterdam University Medical Centers, University of Amsterdam, Heart Center, Amsterdam, the Netherlands
| | - Annika Rydberg
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Clinical Science, Umeå University, Umeå, Sweden
| | - Arthur A M Wilde
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, the Netherlands
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences Amsterdam University Medical Centers, University of Amsterdam, Heart Center, Amsterdam, the Netherlands
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7
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Bratt E, Acuna Mora M, Sparud-Lundin C, Saarijarvi M, Skogby S, Burstrom A, Rydberg A, Hanseus K, Fernlund E, Fadl S, Kazamia K, Moons P. The STEPSTONES transition program for adolescents with congenital heart disease is effective in improving patient empowerment: a randomized controlled trial. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Congenital heart disease (CHD) is the most common birth defect, with a global birth prevalence of 8.2 per 1000 new-borns. Improvements in the diagnosis and treatment of children with CHD have resulted in increasing life prospects, with more than 90% surviving into adulthood today. To ensure expert lifetime care, patients need to transfer from paediatric-oriented care to adult-oriented care. At the same time, they need to transition from a dependent child with CHD to an independent adult who can manage living with CHD. Thus, during adolescence, patients with CHD need to acquire knowledge and skills to independently manage their health, while simultaneously experiencing a series of physical, cognitive and social changes. To facilitate this phase, transitional care is needed. However, high-level empirical evidence on the effectiveness of transitional care is scarce.
Purpose
To investigate the empowering effect (primary outcome) of a structured person-centred transition programme for adolescents with CHD, and to study the effectiveness on transition readiness, patient-reported health, quality of life, health behaviours, disease-related knowledge, parental uncertainty, and parental perception of transition readiness (secondary outcomes).
Methods
The STEPSTONES-CHD trial comprised a hybrid experimental design, in which a randomized controlled trial (RCT) was embedded in a longitudinal, observational study. The trial was conducted in seven CHD centres in Sweden. Two centres were allocated to the RCT-arm, randomising participants to intervention (IG) or control group (CG). The other five centres were intervention-naïve centres and served as contamination check control group (CCCG). Outcomes were measured at the age of 16 y (T0; baseline), 17y (T1) and 18.5y (T2).
Results
The change in empowerment from T0 to T2 differed significantly between the IG and CG (mean difference=3.44; 95% CI: 0.27–6.65; p=0.036) in favour for IG. For the secondary outcomes, significant differences in change over time were found in parental involvement (p=0.008), CHD-specific knowledge (p=0.0002), and satisfaction with physical appearance (p=0.039). No differences in primary or secondary outcomes were detected between CG and CCCG, indicating that there was no contamination in the CG.
Conclusion
The STEPSTONES-CHD trial demonstrated the effectiveness of a person-centred transition programme in empowering adolescents with CHD. Furthermore, parental involvement, satisfaction with physical appearance and CHD-related knowledge were positively influenced. This trial provides empirical underpinnings for the implementation of transition programmes for afflicted adolescents.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Swedish Research Council for Health, Working Life and Welfare-FORTE (grant STYA2015/0003)Swedish Research Council (grant 2015–02503)
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Affiliation(s)
- E Bratt
- Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg , Gothenburg , Sweden
| | - M Acuna Mora
- Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg , Gothenburg , Sweden
| | - C Sparud-Lundin
- Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg , Gothenburg , Sweden
| | - M Saarijarvi
- Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg , Gothenburg , Sweden
| | - S Skogby
- Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg , Gothenburg , Sweden
| | - A Burstrom
- Karolinska Institute, Department of Neurobiology, Care Sciences and Society , Stockholm , Sweden
| | - A Rydberg
- Umea University, Department of Clinical Sciences , Umea , Sweden
| | - K Hanseus
- Skane University Hospital, Department of Paediatric Cardiology , Lund , Sweden
| | - E Fernlund
- Department of Public Health and Primary Care, KU Leuven , Linköping , Sweden
| | - S Fadl
- Orebro University Hospital, Department of Paediatric and Women's Health Care , Orebro , Sweden
| | - K Kazamia
- Karolinska Institute, Department of Women's and Children's Health , Stockholm , Sweden
| | - P Moons
- Department of Public Health and Primary Care, KU Leuven , Leuven , Belgium
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8
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Winbo A, Diamant U, Persson J, Jensen SM, Rydberg A. To Modify or Not to Modify: Allele‐Specific Effects of 3'UTR‐
KCNQ1
Single Nucleotide Polymorphisms on Clinical Phenotype in a Long QT 1 Founder Population Segregating a Dominant‐Negative Mutation. J Am Heart Assoc 2022; 11:e025981. [DOI: 10.1161/jaha.122.025981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
There are conflicting reports with regard to the allele‐specific gene suppression effects of single nucleotide polymorphisms (SNPs) in the 3'untranslated region (3'UTR) of the
KCNQ1
gene in long QT syndrome type 1 (LQT1) populations. Here we assess the allele‐specific effects of 3 previously published 3'UTR‐
KCNQ1
's SNPs in a LQT1 founder population segregating a dominant‐negative mutation.
Methods and Results
Bidirectional sequencing of the
KCNQ1
'
s
3'UTR was performed in the p.Y111C founder population (n=232, 147 genotype positive), with a minor allele frequency of 0.1 for SNP1 (rs2519184) and 0.6 for linked SNP2 (rs8234) and SNP3 (rs107980). Allelic phase was assessed in trios aided by haplotype data, revealing a high prevalence of derived SNP2/3
in cis
with p.Y111C (89%). Allele‐specific association analyses, corrected using a relatedness matrix, were performed between 3'UTR‐
KCNQ1
SNP genotypes and clinical phenotypes. SNP1
in trans
was associated with a significantly higher proportion of symptomatic phenotype compared with no derived SNP1 allele
in trans
(58% versus 32%, corrected
P
=0.027). SNP2/3
in cis
was associated with a significantly lower proportion of symptomatic phenotype compared with no derived SNP2/3 allele
in cis
(32% versus 69%, corrected
P
=0.010).
Conclusions
Allele‐specific modifying effects on symptomatic phenotype of 3'UTR‐
KCNQ1
SNPs rs2519184, rs8234, and rs107980 were seen in a LQT1 founder population segregating a dominant‐negative mutation. The high prevalence of suppressive 3'UTR‐
KCNQ1
SNPs segregating with the founder mutation could contribute to the previously documented low incidence of cardiac events in heterozygous carriers of the p.Y111C
KCNQ1
mutation.
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Affiliation(s)
- Annika Winbo
- Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
- Department of Physiology University of Auckland Auckland New Zealand
| | - Ulla‐Britt Diamant
- Department of Public Health and Clinical Medicine Heart Centre, Umeå University Umeå Sweden
| | - Johan Persson
- Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
| | - Steen M. Jensen
- Department of Public Health and Clinical Medicine Heart Centre, Umeå University Umeå Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
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9
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Sundström E, Jensen SM, Diamant UB, Wiklund U, Rydberg A. ICD harm and benefit: risk scores applied to the Swedish ICD-treated LQTS population. SCAND CARDIOVASC J 2022; 56:48-55. [PMID: 35481393 DOI: 10.1080/14017431.2022.2060524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Objectives. The use of implantable cardioverter defibrillators (ICDs) in long QT syndrome (LQTS) patients is essential in high-risk patients. However, it is sometimes used in patients without high-risk profiles for whom the expected benefit may be lower than the risk of ICD harm. Here, we evaluated ICD benefit and harm by assessing risk according to risk scores and pre-ICD clinical characteristics. Design. We studied 109 Swedish LQTS patients drawn from the Swedish ICD and Pacemaker Registry with data collected from medical records. In addition to clinical characteristics, we used two risk scores to assess pre-ICD risk, and evaluated ICD benefit and harm. Results. Twenty percent of all patients received ≥1 appropriate shock with a first appropriate shock incidence rate of 4.3 per 100 person-years. A long QTc (≥550 ms) and double mutations were significantly associated with appropriate shock. Low risk scores among patients without pre-ICD aborted cardiac arrest were not significantly associated with low risk of first appropriate shock. The incidence rates of a first inappropriate shock and first complication were 3.0 and 7.6 per 100 person-years, respectively. Conclusion. Our findings on ICD harm emphasize the importance of careful individual pre-ICD consideration. When we applied two risk scores to patients without pre-ICD aborted cardiac arrest, we could not validate their ability to identify patients with low risk of appropriate shocks and patients who were assessed as having a low risk still received appropriate shocks. This further supports the complexity of risk stratification and the difficulty of using risk scores.
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Affiliation(s)
- Emilia Sundström
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Steen M Jensen
- Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, Sweden
| | - Ulla-Britt Diamant
- Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, Sweden
| | - Urban Wiklund
- Department of Radiation Sciences, Radiation Physics, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
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10
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Fricke K, Mellander M, Hanséus K, Tran P, Synnergren M, Johansson Ramgren J, Rydberg A, Sunnegårdh J, Dalén M, Sjöberg G, Weismann CG, Liuba, P. Impact of Left Ventricular Morphology on Adverse Outcomes Following Stage 1 Palliation for Hypoplastic Left Heart Syndrome: 20 Years of National Data From Sweden. J Am Heart Assoc 2022; 11:e022929. [PMID: 35348003 PMCID: PMC9075443 DOI: 10.1161/jaha.121.022929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
Hypoplastic left heart syndrome is associated with significant morbidity and mortality. We aimed to assess the influence of left ventricular morphology and choice of shunt on adverse outcome in patients with hypoplastic left heart syndrome and stage 1 palliation.
Methods and Results
This was a retrospective analysis of patients with hypoplastic left heart syndrome with stage 1 palliation between 1999 and 2018 in Sweden. Patients (n=167) were grouped based on the anatomic subtypes aortic‐mitral atresia, aortic atresia‐mitral stenosis (AA‐MS), and aortic‐mitral stenosis. The left ventricular phenotypes including globular left ventricle (Glob‐LV), miniaturized and slit‐like left ventricle (LV), and the incidence of major adverse events (MAEs) including mortality were assessed. The overall mortality and MAEs were 31% and 41%, respectively. AA‐MS (35%) was associated with both mortality (all other subtypes versus AA‐MS: interstage‐I: hazard ratio [HR], 2.7;
P
=0.006; overall: HR, 2.2;
P
=0.005) and MAEs (HR, 2.4;
P
=0.0009). Glob‐LV (57%), noticed in all patients with AA‐MS, 61% of patients with aortic stenosis‐mitral stenosis, and 19% of patients with aortic atresia‐mitral atresia, was associated with both mortality (all other left ventricular phenotypes versus Glob‐LV: interstage‐I: HR, 4.5;
P
=0.004; overall: HR, 3.4;
P
=0.0007) and MAEs (HR, 2.7;
P
=0.0007). There was no difference in mortality and MAEs between patients with AA‐MS and without AA‐MS with Glob‐LV (
P
>0.15). Patients with AA‐MS (35%) or Glob‐LV (38%) palliated with a Blalock‐Taussig shunt had higher overall mortality compared with those palliated with Sano shunts, irrespective of the stage 1 palliation year (AA‐MS: HR, 2.6;
P
=0.04; Glob‐ LV: HR, 2.1;
P
=0.03).
Conclusions
Glob‐LV and AA‐MS are independent morphological risk factors for adverse short‐ and long‐ term outcome, especially if a Blalock‐Taussig shunt is used as part of stage 1 palliation. These findings are important for the clinical management of patients with hypoplastic left heart syndrome.
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Affiliation(s)
- Katrin Fricke
- Cardiology Pediatric Heart Centre Skåne University Hospital Lund Sweden
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
| | - Mats Mellander
- Department of Pediatrics Institute of Clinical SciencesSahlgrenska Academy Gothenburg Sweden
- Children´s Heart Centre Sahlgrenska University Hospital Gothenburg Sweden
| | - Katarina Hanséus
- Cardiology Pediatric Heart Centre Skåne University Hospital Lund Sweden
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
| | - Phan‐Kiet Tran
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
- Cardiac Surgery Pediatric Heart Centre Skåne University Hospital Lund Sweden
| | - Mats Synnergren
- Department of Pediatrics Institute of Clinical SciencesSahlgrenska Academy Gothenburg Sweden
- Children´s Heart Centre Sahlgrenska University Hospital Gothenburg Sweden
| | - Jens Johansson Ramgren
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
- Cardiac Surgery Pediatric Heart Centre Skåne University Hospital Lund Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
| | - Jan Sunnegårdh
- Department of Pediatrics Institute of Clinical SciencesSahlgrenska Academy Gothenburg Sweden
- Children´s Heart Centre Sahlgrenska University Hospital Gothenburg Sweden
| | - Magnus Dalén
- Department of Cardiothoracic Surgery Karolinska University Hospital Stockholm Sweden
- Department of Molecular Medicine and Surgery Karolinska Institute Stockholm Sweden
| | - Gunnar Sjöberg
- Department of Women's and Children's Health Karolinska Institute Stockholm Sweden
| | - Constance G. Weismann
- Cardiology Pediatric Heart Centre Skåne University Hospital Lund Sweden
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
| | - Petru Liuba,
- Cardiology Pediatric Heart Centre Skåne University Hospital Lund Sweden
- Pediatrics Department of Clinical Sciences Lund University Lund Sweden
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11
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Charisopoulou D, Koulaouzidis G, Rydberg A, Henein MY. Reversed Apico-Basal Myocardial Relaxation Sequence During Exercise in Long QT Syndrome Mutations Carriers With History of Previous Cardiac Events. Front Physiol 2022; 12:780448. [PMID: 35197859 PMCID: PMC8859439 DOI: 10.3389/fphys.2021.780448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 12/30/2021] [Indexed: 11/22/2022] Open
Abstract
Background Recent echocardiography studies in inherited long QT syndrome (LQTS) have shown left ventricular (LV) myocardial relaxation disturbances to follow markedly prolonged and dispersed mechanical contraction. Aim We used speckle-tracking echocardiography to assess disturbances in LV myocardial relaxation sequence during exercise and their relationship to symptoms. Methods Forty seven LQTS patients (45 ± 15 years, 25 female and 20 symptomatic, LVEF: 65 ± 6%) and 35 controls underwent exercise echocardiogram using Bruce protocol. ECG and echo parameters were recorded at rest, peak exercise (p.e.) and recovery. Results Between patients and controls there were no differences in age, gender, HR or LVEF. At p.e, patients had longer time to LV longitudinal ESR (tESR) at all three LV segments; basal (p < 0.0001), mid- cavity (p = 0.03) and apical (p = 0.03) whereas at rest such difference was noted only at base (p = 0.0007). Patients showed reversed apico-basal relaxation sequence (ΔtESRbase–apex) with early relaxation onset occurring later at base than at apex, both at rest (49 ± 43 vs. –29 ± 19 ms, p < 0.0001) and at p.e. (46 ± 38 vs. –40 ± 22 ms, p < 0.0001), particularly in symptomatic patients (69 ± 44 vs. 32 ± 26, p < 0.0007). ΔtESRbase–apex correlated with longer QTc interval, lower ESR and attenuated LV stroke volume. Conclusion LQTS patients show reversed longitudinal relaxation sequence, which worsens with exercise, particularly in those with previous cardiac events.
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Affiliation(s)
- Dafni Charisopoulou
- Institute of Public Health and Clinical Medicine, Umea University, Umeå, Sweden.,Division of Pediatric Cardiology, Department of Pediatrics, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, Netherlands.,Academic Centre for Congenital Heart Disease, Nijmegen, Netherlands
| | - George Koulaouzidis
- Department of Biochemical Sciences, Pomeranian Medical University, Szczecin, Poland
| | - Annika Rydberg
- Department of Clinical Sciences, Paediatrics, Umea University, Umeå, Sweden
| | - Michael Y Henein
- Institute of Public Health and Clinical Medicine, Umea University, Umeå, Sweden
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12
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Bergdahl MS, Crenshaw AG, Hedlund ER, Sjöberg G, Rydberg A, Sandberg C. Calf Muscle Oxygenation is Impaired and May Decline with Age in Young Patients with Total Cavopulmonary Connection. Pediatr Cardiol 2022; 43:449-456. [PMID: 34623455 DOI: 10.1007/s00246-021-02743-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 09/28/2021] [Indexed: 11/29/2022]
Abstract
Patients palliated with Total Cavopulmonary Connection have a lower muscle mass and a lower exercise capacity. We assessed calf muscle oxidative metabolism during and after heel raise exercise to exhaustion in young patients with TCPC compared to healthy peers. Near-infrared spectroscopy was used for measuring oxygen metabolism in the medial portion of the gastrocnemius muscle. Forty-three patients with TCPC, aged 6-18 years, were compared with 43 age and sex-matched healthy control subjects. Subgroups were formed to include children (6-12 years) and adolescents (13-18 years) to determine if these age groups influenced the results. During exercise, for the patients compared to controls there was a lower increase in deoxygenated hemoglobin (oxygen extraction) (5.13 ± 2.99au vs. 7.75 ± 4.15au, p = 0.001) and a slower rate of change in total hemoglobin (blood volume) (0.004 ± 0.015au vs 0.016 ± 0.01au, p = 0.001). Following exercise, patients exhibited a slower initial increase in tissue oxygenation saturation index (0.144 ± 0.11au vs 0.249 ± 0.226au, p = 0.007) and a longer half-time to maximum hyperemia (23.7 ± 11.4 s vs 16.8 ± 7.5 s, p = 0.001). On the subgroup level, the adolescents differed compared to healthy peers, whereas the children did not. Young patients with TCPC had impaired oxidative metabolism during exercise and required a longer time to recover. In that the differences were seen in the adolescent group and not in the children group may indicate a declining function with age.
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Affiliation(s)
- Magne Sthen Bergdahl
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden. .,Centre for Pediatrics and Adolescent Medicine, Norrlands University Hospital, 90737, Umeå, Sweden.
| | - Albert G Crenshaw
- Centre for Musculoskeletal Research, Department of Occupational and Public Health Sciences and Psychology, University of Gävle, Gävle, Sweden
| | - Eva Rylander Hedlund
- Department of Women's and Children's Health, Division of Pediatric Cardiology, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Sjöberg
- Department of Women's and Children's Health, Division of Pediatric Cardiology, Karolinska Institutet, Stockholm, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Camilla Sandberg
- Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden.,Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden
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13
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Lundström A, Wiklund U, Law L, Jensen S, Karlsson M, Rydberg A. Corrigendum to "Aberrant autonomic pattern during the post-exercise recovery phase in Long QT syndrome patients" [Auton. Neurosci. 236 (2021) 102897]. Auton Neurosci 2022; 238:102931. [PMID: 35000875 DOI: 10.1016/j.autneu.2021.102931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Anna Lundström
- Department of Clinical Sciences, Umeå University, Umeå, Sweden.
| | - Urban Wiklund
- Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Lucy Law
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Steen Jensen
- Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, Sweden
| | - Marcus Karlsson
- Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Umeå University, Umeå, Sweden
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14
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Charisopoulou D, Koulaouzidis G, Rydberg A, Henein M. Reversed apico-basal myocardial relaxation sequence during exercise in related to impaired diastolic function and attenuated stroke volume response in LQTS mutations carriers. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Speckle-tracking echocardiography studies in inherited long QT syndrome (LQTS) have recently shown myocardial relaxation disturbances at rest in the form of delayed onset of relaxation as a result of prolonged and dispersed mechanical contraction.
The aim of this study was to assess disturbances in left ventricular regional myocardial relaxation sequence during exercise.
Methods
Forty seven (age 45±15 years, 25 female, LVEF: 65±6%, 36 LQT1 and 11 LQT2 whereof 20 symptomatic) patients underwent cardiac exercise test using Bruce protocol. ECG and echo parameters were recorded at rest, during peak exercise (p.e.) and at were compared with 35 healthy individuals. All time intervals were calculated from onset of R wave on superimposed ECG and were corrected to R-R interval.
Results
LQTS patients had longer QTc interval than controls at all the three exercise phases. LV longitudinal tESR, a reflector of relaxation delay was examined separately in the LV basal, mid and apical segments. At rest, no significant differences were noted between the two groups at the basal (490±59 vs. 486±36, p=0.6) and mid LV cavity regions (488±45 vs. 498±39, p=0.3); whereas in patients were seen more prolonged tESR in the apical regions (467±52 vs. 512±44, p<0.0001).
At peak exercise, patients had longer tESR at all three LV segments; basal (394±67 vs. 316±30, p<0.0001), mid cavity (363±64 vs. 340±32, p=0.03) and apical (348±60 vs. 368±28, p=0.03). The apico-basal relaxation dispersion (Δt ESRbase-apex) was significantly more pronounced in patients than in controls both at rest (49±43 vs. −29±19, p<0.0001) and at p.e. (46±38 vs. −40±22, p<0.0001). Moreover, the longitudinal relaxation sequence was reversed in patients (positive values for Δt ESRbase-apex); the early relaxation phase at the base was more delayed than at the apex, opposite to controls in whom the early relaxation onset occurred earlier in LV base than at apex. The magnitude of this apico-basal relaxation dispersion (Δt ESRbase-apex) correlated with longer QTc interval (r=0.9, p<0.0001), lower ESR (r=−0.8, p<0.0001) and attenuated LV stroke volume (r=−0.9, p<0.0001). This difference in Δt ESRbase-apex was more pronounced in symptomatic patients at p.e. than in asymptomatic (69±44 vs. 32±26, p<0.0007).
Conclusion
Our results showed reversed longitudinal relaxation sequence with more delayed early relaxation contraction phase at LV base than at LV apex in LQTS mutation carriers opposite to controls. These disturbances worsened at peak exercise and were related to longer QTc intervals and symptomatic patients.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - G Koulaouzidis
- Stockport NHS Foundation Trust, Manchester, United Kingdom
| | | | | |
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15
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Mörner S, Carlberg B, Rydberg A, Jensen S, Lundström A, Nyberg P, Diamant UB, Hellman U, Johnson O, Näslund U. [Experiences from a multidisciplinary cardiogenetic clinic]. Lakartidningen 2021; 118:21083. [PMID: 35043387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Comprehensive genetic and clinical care of families with monogenic cardiovascular diseases requires competences from different medical specialties. Genetic assessment, cascade screening, risk estimation, treatment and follow-up is difficult to cover. Fourteen years ago, a center for cardiovascular diseases was created in our hospital, to improve the care of families with monogenic cardiovascular diseases. At our center, clinical geneticists, cardiologists, angiologists, pediatric cardiologists and genetic counselors work together in a seamless organization, while still having different clinic affiliations. A key feature of this organization are the family outpatient clinics, where the proband and his/her relatives at genetic risk are invited to take part. When the family or relatives live in other parts of the country, they are invited to participate through video conference. In this paper we report our experiences and working routines from more than 300 families and 2000 individuals.
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Affiliation(s)
- Stellan Mörner
- docent, överläkare, Centrum för kardiovaskulär genetik, Hjärtcentrum, Norrlands universitetssjukhus, Umeå
| | | | - Annika Rydberg
- adj professor, överläkare, Centrum för kardiovaskulär genetik, Barn- och ungdomscentrum, Norrlands universitetssjukhus, Umeå
| | - Steen Jensen
- docent, överläkare, Centrum för kardiovaskulär genetik, Hjärtcentrum, Norrlands universitetssjukhus, Umeå
| | - Anna Lundström
- doktorand, ST-läkare, Centrum för kardiovaskulär genetik, Klinisk genetik, Laboratoriemedicin, Norrlands universitetssjukhus, Umeå
| | - Peter Nyberg
- överläkare, Centrum för kardiovaskulär genetik, Klinisk genetik, Laboratoriemedicin; Norrlands universitetssjukhus, Umeå
| | - Ulla-Britt Diamant
- med dr, biomedicinsk analytiker, institutionen för folkhälsa och klinisk medicin, Umeå universitet
| | - Urban Hellman
- med dr, 1:a forskningsingenjör, Centrum för kardiovaskulär genetik, institutionen för folkhälsa och klinisk medicin, Umeå universitet
| | - Owe Johnson
- docent, institutionen för folkhälsa och klinisk medicin, Umeå universitet
| | - Ulf Näslund
- professor, överläkare, institutionen för folkhälsa och klinisk medicin, Umeå universitet
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16
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Winbo A, Ramanan S, Eugster E, Rydberg A, Jovinge S, Skinner JR, Montgomery JM. Functional hyperactivity in long QT syndrome type 1 pluripotent stem cell-derived sympathetic neurons. Am J Physiol Heart Circ Physiol 2021; 321:H217-H227. [PMID: 34142889 DOI: 10.1152/ajpheart.01002.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sympathetic activation is an established trigger of life-threatening cardiac events in long QT syndrome type 1 (LQT1). KCNQ1 loss-of-function variants, which underlie LQT1, have been associated with both cardiac arrhythmia and neuronal hyperactivity pathologies. However, the LQT1 sympathetic neuronal phenotype is unknown. Here, we aimed to study human induced pluripotent stem cell (hiPSC)-derived sympathetic neurons (SNs) to evaluate neuronal functional phenotype in LQT1. We generated hiPSC-SNs from two patients with LQT1 with a history of sympathetically triggered arrhythmia and KCNQ1 loss-of-function genotypes (c.781_782delinsTC and p.S349W/p.R518X). Characterization of hiPSC-SNs was performed using immunohistochemistry, enzyme-linked immunosorbent assay, and whole cell patch clamp electrophysiology, and functional LQT1 hiPSC-SN phenotypes compared with healthy control (WT) hiPSC-SNs. hiPSC-SNs stained positive for tyrosine hydroxylase, peripherin, KCNQ1, and secreted norepinephrine. hiPSC-SNs at 60 ± 2.2 days in vitro had healthy resting membrane potentials (-60 ± 1.3 mV), and fired rapid action potentials with mature kinetics in response to stimulation. Significant hyperactivity in LQT1 hiPSC-SNs was evident via increased norepinephrine release, increased spontaneous action potential frequency, increased total inward current density, and reduced afterhyperpolarization, compared with age-matched WT hiPSC-SNs. A significantly higher action potential frequency upon current injection and larger synaptic current amplitudes in compound heterozygous p.S349W/p.R518X hiPSC-SNs compared with heterozygous c.781_782delinsTC hiPSC-SNs was also observed, suggesting a potential genotype-phenotype correlation. Together, our data reveal increased neurotransmission and excitability in heterozygous and compound heterozygous patient-derived LQT1 sympathetic neurons, suggesting that the cellular arrhythmogenic potential in LQT1 is not restricted to cardiomyocytes.NEW & NOTEWORTHY Here, we present the first study of patient-derived LQT1 sympathetic neurons that are norepinephrine secreting, and electrophysiologically functional, in vitro. Our data reveal a novel LQT1 sympathetic neuronal phenotype of increased neurotransmission and excitability. The identified sympathetic neuronal hyperactivity phenotype is of particular relevance as it could contribute to the mechanisms underlying sympathetically triggered arrhythmia in LQT1.
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Affiliation(s)
- Annika Winbo
- Department of Physiology, University of Auckland, Auckland, New Zealand.,Manaaki Mānawa Centre for Heart Research, University of Auckland, Auckland, New Zealand.,Department of Paediatric and Congenital Cardiac Services, Starship Children's Hospital, Auckland, New Zealand.,The Cardiac Inherited Disease Group (CIDG), Auckland, New Zealand.,Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Suganeya Ramanan
- Department of Physiology, University of Auckland, Auckland, New Zealand.,Manaaki Mānawa Centre for Heart Research, University of Auckland, Auckland, New Zealand
| | - Emily Eugster
- DeVos Cardiovascular Research Program Spectrum Health/Van Andel Research Institute, Grand Rapids, Michigan
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Stefan Jovinge
- DeVos Cardiovascular Research Program Spectrum Health/Van Andel Research Institute, Grand Rapids, Michigan.,Cardiovascular Institute, Stanford University of Medicine, Stanford, California
| | - Jonathan R Skinner
- Manaaki Mānawa Centre for Heart Research, University of Auckland, Auckland, New Zealand.,Department of Paediatric and Congenital Cardiac Services, Starship Children's Hospital, Auckland, New Zealand.,The Cardiac Inherited Disease Group (CIDG), Auckland, New Zealand
| | - Johanna M Montgomery
- Department of Physiology, University of Auckland, Auckland, New Zealand.,Manaaki Mānawa Centre for Heart Research, University of Auckland, Auckland, New Zealand
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17
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Dahlqvist JA, Wiklund U, Karlsson M, Hanséus K, Strömvall Larsson E, Johansson Ramgren J, Berggren H, Rydberg A. Changes in Heart Rate and Heart Rate Variability During Surgical Stages to Completed Fontan Circulation. Pediatr Cardiol 2021; 42:1162-1169. [PMID: 33837840 PMCID: PMC8192394 DOI: 10.1007/s00246-021-02595-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/31/2021] [Indexed: 11/28/2022]
Abstract
Arrhythmia is related to heart rate variability (HRV), which reflects the autonomic nervous regulation of the heart. We hypothesized that autonomic nervous ganglia, located at the junction of the superior vena cava's entrance to the heart, may be affected during the bidirectional Glenn procedure (BDG), resulting in reduced HRV. We aimed to investigate changes in heart rate and HRV in a cohort of children with univentricular heart defects, undergoing stepwise surgery towards total cavopulmonary connection (TCPC), and compare these results with healthy controls. Twenty four hours Holter-ECG recordings were obtained before BDG (n = 47), after BDG (n = 47), and after total cavopulmonary connection (TCPC) (n = 45) in patients and in 38 healthy controls. HRV was analyzed by spectral and Poincaré methods. Age-related z scores were calculated and compared using linear mixed effects modeling. Total HRV was significantly lower in patients before BDG when compared to healthy controls. The mean heart rate was significantly reduced in patients after BDG compared to before BDG. Compared to healthy controls, patients operated with BDG had significantly reduced heart rate and reduced total HRV. Patients with TCPC showed reduced heart rate and HRV compared with healthy controls. In patients after TCPC, total HRV was decreased compared to before TCPC. Heart rate was reduced after BDG procedure, and further reductions of HRV were seen post-TCPC. Our results indicate that autonomic regulation of cardiac rhythm is affected both after BDG and again after TCPC. This may be reflected as, and contribute to, postoperative arrhythmic events.
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Affiliation(s)
| | - Urban Wiklund
- grid.12650.300000 0001 1034 3451Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Marcus Karlsson
- grid.12650.300000 0001 1034 3451Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Katarina Hanséus
- grid.411843.b0000 0004 0623 9987Department of Clinical Sciences Lund, Children Heart Centre, Skåne University Hospital Lund, Lund, Sweden
| | - Eva Strömvall Larsson
- grid.8761.80000 0000 9919 9582Department of Cardiology, Institute of Clinical Sciences, The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden
| | - Jens Johansson Ramgren
- grid.411843.b0000 0004 0623 9987Department of Pediatric Cardiac Surgery, Children’s Heart Center, Skåne University Hospital Lund, Lund, Sweden
| | - Håkan Berggren
- grid.415579.b0000 0004 0622 1824Department of Pediatric Cardiac Surgery, Children’s Heart Center, The Queen Silvia Children’s Hospital, Göteborg, Sweden
| | - Annika Rydberg
- grid.12650.300000 0001 1034 3451Department of Clinical Sciences, Pediatrics, Umeå University, 90185 Umeå, Sweden
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18
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Dahlberg P, Diamant UB, Gilljam T, Rydberg A, Bergfeldt L. QT correction using Bazett's formula remains preferable in long QT syndrome type 1 and 2. Ann Noninvasive Electrocardiol 2020; 26:e12804. [PMID: 33070409 PMCID: PMC7816807 DOI: 10.1111/anec.12804] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 11/28/2022] Open
Abstract
Background The heart rate (HR) corrected QT interval (QTc) is crucial for diagnosis and risk stratification in the long QT syndrome (LQTS). Although its use has been questioned in some contexts, Bazett's formula has been applied in most diagnostic and prognostic studies in LQTS patients. However, studies on which formula eliminates the inverse relation between QT and HR are lacking in LQTS patients. We therefore determined which QT correction formula is most appropriate in LQTS patients including the effect of beta blocker therapy and an evaluation of the agreement of the formulae when applying specific QTc limits for diagnostic and prognostic purposes. Methods Automated measurements from routine 12‐lead ECGs from 200 genetically confirmed LQTS patients from two Swedish regions were included (167 LQT1, 33 LQT2). QT correction was performed using the Bazett, Framingham, Fridericia, and Hodges formulae. Linear regression was used to compare the formulae in all patients, and before and after the initiation of beta blocking therapy in a subgroup (n = 44). Concordance analysis was performed for QTc ≥ 480 ms (diagnosis) and ≥500 ms (prognosis). Results The median age was 32 years (range 0.1–78), 123 (62%) were female and 52 (26%) were children ≤16 years. Bazett's formula was the only method resulting in a QTc without relation with HR. Initiation of beta blocking therapy did not alter the result. Concordance analyses showed clinically significant differences (Cohen's kappa 0.629–0.469) for diagnosis and prognosis in individual patients. Conclusion Bazett's formula remains preferable for diagnosis and prognosis in LQT1 and 2 patients.
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Affiliation(s)
- Pia Dahlberg
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Region Västra Götaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ulla-Britt Diamant
- Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, Sweden
| | - Thomas Gilljam
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Region Västra Götaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Lennart Bergfeldt
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Region Västra Götaland, Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
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19
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Abdelsayed M, Bytyçi I, Rydberg A, Henein MY. Left Ventricular Contraction Duration Is the Most Powerful Predictor of Cardiac Events in LQTS: A Systematic Review and Meta-Analysis. J Clin Med 2020; 9:jcm9092820. [PMID: 32878246 PMCID: PMC7565502 DOI: 10.3390/jcm9092820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 02/07/2023] Open
Abstract
Background: Long-QT syndrome (LQTS) is primarily an electrical disorder characterized by a prolonged myocardial action potential. The delay in cardiac repolarization leads to electromechanical (EM) abnormalities, which adds a diagnostic value for LQTS. Prolonged left ventricular (LV) contraction was identified as a potential risk for arrhythmia. The aim of this meta-analysis was to assess the best predictor of all EM parameters for cardiac events (CEs) in LQTS patients. Methods: We systematically searched all electronic databases up to March 2020, to select studies that assessed the relationship between echocardiographic indices—contraction duration (CD), mechanical dispersion (MD), QRS onset to peak systolic strain (QAoC), and the EM window (EMW); and electrical indices— corrected QT interval (QTC), QTC dispersion, RR interval in relation to CEs in LQTS. This meta-analysis included a total of 1041 patients and 373 controls recruited from 12 studies. Results: The meta-analysis showed that LQTS patients had electrical and mechanical abnormalities as compared to controls—QTC, WMD 72.8; QTC dispersion, WMD 31.7; RR interval, WMD 91.5; CD, WMD 49.2; MD, WMD 15.9; QAoC, WMD 27.8; and EMW, WMD −62.4. These mechanical abnormalities were more profound in symptomatic compared to asymptomatic patients in whom disturbances were already manifest, compared to controls. A CD ≥430 ms had a summary sensitivity (SS) of 71%, specificity of 84%, and diagnostic odds ratio (DOR) >19.5 in predicting CEs. EMW and QTC had a lower accuracy. Conclusions: LQTS is associated with pronounced EM abnormalities, particularly prolonged LV myocardial CD, which is profound in symptomatic patients. These findings highlight the significant role of EM indices like CD in managing LQTS patients.
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Affiliation(s)
- Mena Abdelsayed
- Institute of Public Health and Clinical Medicine, Umeå University, 90187 Umeå, Sweden; (M.A.); (I.B.)
| | - Ibadete Bytyçi
- Institute of Public Health and Clinical Medicine, Umeå University, 90187 Umeå, Sweden; (M.A.); (I.B.)
- Universi College, Bardhosh, 10000 Prishtina, Kosovo
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, 90187 Umeå, Sweden;
| | - Michael Y. Henein
- Institute of Public Health and Clinical Medicine, Umeå University, 90187 Umeå, Sweden; (M.A.); (I.B.)
- Molecular and Clinical Sciences Research Institute, St George University London, SW17 0QT, UK
- Institute of Fluid Dynamics, Brunel University, London UB8 3PH, UK
- Correspondence: ; Tel.: +46-90-785-1431
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20
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Lahrouchi N, Tadros R, Crotti L, Mizusawa Y, Postema PG, Beekman L, Walsh R, Hasegawa K, Barc J, Ernsting M, Turkowski KL, Mazzanti A, Beckmann BM, Shimamoto K, Diamant UB, Wijeyeratne YD, Kucho Y, Robyns T, Ishikawa T, Arbelo E, Christiansen M, Winbo A, Jabbari R, Lubitz SA, Steinfurt J, Rudic B, Loeys B, Shoemaker MB, Weeke PE, Pfeiffer R, Davies B, Andorin A, Hofman N, Dagradi F, Pedrazzini M, Tester DJ, Bos JM, Sarquella-Brugada G, Campuzano Ó, Platonov PG, Stallmeyer B, Zumhagen S, Nannenberg EA, Veldink JH, van den Berg LH, Al-Chalabi A, Shaw CE, Shaw PJ, Morrison KE, Andersen PM, Müller-Nurasyid M, Cusi D, Barlassina C, Galan P, Lathrop M, Munter M, Werge T, Ribasés M, Aung T, Khor CC, Ozaki M, Lichtner P, Meitinger T, van Tintelen JP, Hoedemaekers Y, Denjoy I, Leenhardt A, Napolitano C, Shimizu W, Schott JJ, Gourraud JB, Makiyama T, Ohno S, Itoh H, Krahn AD, Antzelevitch C, Roden DM, Saenen J, Borggrefe M, Odening KE, Ellinor PT, Tfelt-Hansen J, Skinner JR, van den Berg MP, Olesen MS, Brugada J, Brugada R, Makita N, Breckpot J, Yoshinaga M, Behr ER, Rydberg A, Aiba T, Kääb S, Priori SG, Guicheney P, Tan HL, Newton-Cheh C, Ackerman MJ, Schwartz PJ, Schulze-Bahr E, Probst V, Horie M, Wilde AA, Tanck MWT, Bezzina CR. Transethnic Genome-Wide Association Study Provides Insights in the Genetic Architecture and Heritability of Long QT Syndrome. Circulation 2020; 142:324-338. [PMID: 32429735 PMCID: PMC7382531 DOI: 10.1161/circulationaha.120.045956] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Supplemental Digital Content is available in the text. Long QT syndrome (LQTS) is a rare genetic disorder and a major preventable cause of sudden cardiac death in the young. A causal rare genetic variant with large effect size is identified in up to 80% of probands (genotype positive) and cascade family screening shows incomplete penetrance of genetic variants. Furthermore, a proportion of cases meeting diagnostic criteria for LQTS remain genetically elusive despite genetic testing of established genes (genotype negative). These observations raise the possibility that common genetic variants with small effect size contribute to the clinical picture of LQTS. This study aimed to characterize and quantify the contribution of common genetic variation to LQTS disease susceptibility.
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Affiliation(s)
- Najim Lahrouchi
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Rafik Tadros
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Cardiovascular Genetics Center, Montreal Heart Institute and Faculty of Medicine, Université de Montréal, Canada (R.T.)
| | - Lia Crotti
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Center for Cardiac Arrhythmias of Genetic Origin (L.C., F.D., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Laboratory of Cardiovascular Genetics (L.C., M.P., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Department of Cardiovascular, Neural and Metabolic Sciences, San Luca Hospital (L.C.), Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy (L.C.)
| | - Yuka Mizusawa
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Pieter G Postema
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Leander Beekman
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Roddy Walsh
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Kanae Hasegawa
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Japan (K.H., S.O., H.I., M.H.).,Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui, Japan (K.H.)
| | - Julien Barc
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,L'Institut du Thorax, INSERM, CNRS, UNIV Nantes, France (J.B., J.-J.S., J.-B.G., V.P.)
| | - Marko Ernsting
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Institute for Genetics of Heart Diseases, Department of Cardiovascular Medicine, University Hospital Muenster, Germany (M.E., B.S., S.Z., E.S.-B.)
| | - Kari L Turkowski
- Departments of Cardiovascular Medicine (Division of Heart Rhythm Services and the Windland Smith Rice Genetic Heart Rhythm Clinic), Pediatric and Adolescent Medicine (Division of Pediatric Cardiology), and Molecular Pharmacology & Experimental Therapeutics (Windland Smith Rice Sudden Death Genomics Laboratory), Mayo Clinic, Rochester, MN (K.L.T., D.J.T., J.M.B., M.J.A.)
| | - Andrea Mazzanti
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Molecular Cardiology, ICS Maugeri, IRCCS and Department of Molecular Medicine, University of Pavia, Italy (A.M., C.N., S.G.P.)
| | - Britt M Beckmann
- Department of Internal Medicine I, University Hospital of the Ludwig Maximilians University, Munich, Germany (B.M.B., M.M.-N., S.K.)
| | - Keiko Shimamoto
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan (K.S., W.S., T.A.)
| | - Ulla-Britt Diamant
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Department of Clinical Sciences, Unit of Paediatrics, Umeå University, Sweden (U.-B.D., A.R.)
| | - Yanushi D Wijeyeratne
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Molecular and Clinical Sciences Research Institute, St George's University of London and Cardiology Clinical Academic Group, St George's University Hospitals NHS Foundation Trust, United Kingdom (Y.D.W., A.A., E.R.B.)
| | - Yu Kucho
- National Hospital Organization Kagoshima Medical Center, Japan (Y.K., M.Y.)
| | - Tomas Robyns
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Department of Cardiovascular Diseases, University Hospitals Leuven, Belgium (T.R.).,Department of Cardiovascular Sciences, KU Leuven, Belgium (T.R.)
| | - Taisuke Ishikawa
- Omics Research Center, National Cerebral and Cardiovascular Center, Osaka, Japan (T.I.)
| | - Elena Arbelo
- Cardiovascular Institute, Hospital Clinic de Barcelona, Universitat de Barcelona, Institut d'Investigació August Pi i Sunyer (IDIBAPS), and Centro de Investigacion Biomedica en Red de Enfermedades Cardiovasculares (CIBERCV), Spain (E.A.)
| | - Michael Christiansen
- Department of Congenital Disorders, Statens Serum Institute, Copenhagen, Denmark (M.C.).,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark (M.C.).,Laboratory of Experimental Cardiology, Department of Biomedical Sciences, University of Copenhagen, Denmark (M.C.)
| | - Annika Winbo
- Department of Physiology, The University of Auckland, New Zealand (A.W.)
| | - Reza Jabbari
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Denmark (R.J., P.E.W., J.T.-H.)
| | - Steven A Lubitz
- Cardiac Arrhythmia Service, Massachusetts General Hospital, Boston (S.A.L., P.T.E.).,Cardiovascular Disease Initiative and Program in Medical and Population Genetics, Broad Institute, Cambridge, MA (S.A.L., P.T.E.)
| | - Johannes Steinfurt
- Department of Cardiology and Angiology I, Heart Center University of Freiburg, Medical Faculty, Germany (J.S., K.E.O.)
| | - Boris Rudic
- Department of Medicine, University Medical Center Mannheim, and German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Germany (B.R., M.B.)
| | - Bart Loeys
- Department of Clinical Genetics, Antwerp University Hospital, Belgium (B.L.)
| | - M Ben Shoemaker
- Department of Medicine (M.B.S., P.E.W., D.M.R.), Vanderbilt University Medical Center, Nashville, TN
| | - Peter E Weeke
- The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Denmark (R.J., P.E.W., J.T.-H.).,Department of Medicine (M.B.S., P.E.W., D.M.R.), Vanderbilt University Medical Center, Nashville, TN
| | - Ryan Pfeiffer
- Masonic Medical Research Institute, Utica, NY (R.P.)
| | - Brianna Davies
- Heart Rhythm Services, Division of Cardiology, Department of Medicine, University of British Columbia, Vancouver, Canada (B.D., A.D.K.)
| | - Antoine Andorin
- Molecular and Clinical Sciences Research Institute, St George's University of London and Cardiology Clinical Academic Group, St George's University Hospitals NHS Foundation Trust, United Kingdom (Y.D.W., A.A., E.R.B.).,L'Institut du Thorax, CHU Nantes, Service de Cardiologie, France (A.A., J.-J.S., J.-B.G.)
| | - Nynke Hofman
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Federica Dagradi
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Center for Cardiac Arrhythmias of Genetic Origin (L.C., F.D., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Matteo Pedrazzini
- Laboratory of Cardiovascular Genetics (L.C., M.P., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - David J Tester
- Departments of Cardiovascular Medicine (Division of Heart Rhythm Services and the Windland Smith Rice Genetic Heart Rhythm Clinic), Pediatric and Adolescent Medicine (Division of Pediatric Cardiology), and Molecular Pharmacology & Experimental Therapeutics (Windland Smith Rice Sudden Death Genomics Laboratory), Mayo Clinic, Rochester, MN (K.L.T., D.J.T., J.M.B., M.J.A.)
| | - J Martijn Bos
- Departments of Cardiovascular Medicine (Division of Heart Rhythm Services and the Windland Smith Rice Genetic Heart Rhythm Clinic), Pediatric and Adolescent Medicine (Division of Pediatric Cardiology), and Molecular Pharmacology & Experimental Therapeutics (Windland Smith Rice Sudden Death Genomics Laboratory), Mayo Clinic, Rochester, MN (K.L.T., D.J.T., J.M.B., M.J.A.)
| | - Georgia Sarquella-Brugada
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Arrhythmia, Inherited Heart Disease and Sudden Death Unit, Hospital Sant Joan de Déu, European Reference Center at the ERN GUARD-Heart Reference Network for Rare Cardiac Diseases, Barcelona, Spain (G.S.-B.).,Medical Science Department, School of Medicine, University of Girona, Spain (G.S.-B.).,Cardiovascular Program, Research Institute of Sant Joan de Déu (IRSJD), Barcelona, Spain (G.S.-B., O.C.)
| | - Óscar Campuzano
- Cardiovascular Program, Research Institute of Sant Joan de Déu (IRSJD), Barcelona, Spain (G.S.-B., O.C.).,Center for Biomedical Diagnosis, Hospital Clinic de Barcelona, Universitat de Barcelona; Institut d'Investigació August Pi i Sunyer (IDIBAPS); Cardiovascular Genetics Center, University of Girona-IDIBGI; and Medical Science Department, School of Medicine, University of Girona, Spain (O.C., R.B.).,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain (O.C.)
| | - Pyotr G Platonov
- Center for Integrative Electrocardiology (CIEL), Department of Cardiology, Clinical Sciences, Lund University, Sweden (P.G.P.)
| | - Birgit Stallmeyer
- Institute for Genetics of Heart Diseases, Department of Cardiovascular Medicine, University Hospital Muenster, Germany (M.E., B.S., S.Z., E.S.-B.)
| | - Sven Zumhagen
- Institute for Genetics of Heart Diseases, Department of Cardiovascular Medicine, University Hospital Muenster, Germany (M.E., B.S., S.Z., E.S.-B.)
| | - Eline A Nannenberg
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, The Netherlands (E.A.N., J.P.v.T.)
| | - Jan H Veldink
- Department of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, The Netherlands (J.H.V., L.H.v.d.B.)
| | - Leonard H van den Berg
- Department of Neurology, UMC Utrecht Brain Center, University Medical Center Utrecht, The Netherlands (J.H.V., L.H.v.d.B.)
| | - Ammar Al-Chalabi
- King's College Hospital, Bessemer Road, London, United Kingdom (A.A.-C.).,Department of Basic and Clinical Neuroscience, King's College London, Maurice Wohl Clinical Neuroscience Institute, United Kingdom (A.A.-C., C.E.S.)
| | - Christopher E Shaw
- Department of Basic and Clinical Neuroscience, King's College London, Maurice Wohl Clinical Neuroscience Institute, United Kingdom (A.A.-C., C.E.S.).,UK Dementia Research Institute, King's College London, United Kingdom (C.E.S.)
| | - Pamela J Shaw
- Center for Cardiac Arrhythmias of Genetic Origin (L.C., F.D., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Laboratory of Cardiovascular Genetics (L.C., M.P., P.J.S.), Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Sheffield Institute for Translational Neuroscience, University of Sheffield, United Kingdom (P.J.S.)
| | - Karen E Morrison
- Faculty of Medicine, University of Southampton, University Hospital Southampton, United Kingdom (K.E.M.)
| | - Peter M Andersen
- Department of Neurology, Ulm University, Germany (P.M.A.).,Department of Pharmacology and Clinical Neuroscience, Umeå University, Sweden (P.M.A.)
| | - Martina Müller-Nurasyid
- Department of Internal Medicine I, University Hospital of the Ludwig Maximilians University, Munich, Germany (B.M.B., M.M.-N., S.K.).,Institute of Genetic Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany (M.M.-N.).,Chair of Genetic Epidemiology, IBE, Faculty of Medicine, LMU Munich, Germany (M.M.-N.)
| | - Daniele Cusi
- Department of Health Sciences, University of Milan, Italy (D.C., C.B.).,Bio4Dreams - Business Nursery for Life Sciences, Milan, Italy (D.C., C.B.)
| | - Cristina Barlassina
- Department of Health Sciences, University of Milan, Italy (D.C., C.B.).,Bio4Dreams - Business Nursery for Life Sciences, Milan, Italy (D.C., C.B.)
| | - Pilar Galan
- Equipe de Recherche en Epidémiologie Nutritionnelle, Centre d'Epidémiologie et Statistiques Paris Cité, Université Paris 13, Inserm (U1153), Inra (U1125), COMUE Sorbonne-Paris-Cité, Bobigny, France (P.G.)
| | - Mark Lathrop
- McGill University and Génome Québec Innovation Centre, Montréal, Canada (M.L., M.M.)
| | - Markus Munter
- McGill University and Génome Québec Innovation Centre, Montréal, Canada (M.L., M.M.)
| | - Thomas Werge
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark (T.W.).,Institute of Biological Psychiatry, Mental Health Centre Sct Hans, Copenhagen University Hospital, Roskilde, Denmark (T.W.).,Department of Clinical Medicine, University of Copenhagen, Denmark (T.W.)
| | - Marta Ribasés
- Psychiatric Genetics Unit, Institute Vall d'Hebron Research (VHIR), Universitat Autònoma de Barcelona, Spain (M.R.)
| | - Tin Aung
- Singapore Eye Research Institute (T.A.)
| | | | | | - Peter Lichtner
- Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany (P.L., T.M.)
| | - Thomas Meitinger
- Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany (P.L., T.M.)
| | - J Peter van Tintelen
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, The Netherlands (E.A.N., J.P.v.T.).,Department of Clinical Genetics, University Medical Centre Groningen, The Netherlands (J.P.v.T., Y.H.).,Department of Clinical Genetics, University Medical Centre Utrecht, University of Utrecht, The Netherlands (J.P.v.T.)
| | - Yvonne Hoedemaekers
- Department of Clinical Genetics, University Medical Centre Groningen, The Netherlands (J.P.v.T., Y.H.)
| | - Isabelle Denjoy
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,AP-HP, Hôpital Bichat, Département de Cardiologie et Centre de Référence des Maladies Cardiaques Héréditaires, F-75018 Paris, France, Université de Paris INSERM U1166, F-75013 France (I.D., A.L.)
| | - Antoine Leenhardt
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,AP-HP, Hôpital Bichat, Département de Cardiologie et Centre de Référence des Maladies Cardiaques Héréditaires, F-75018 Paris, France, Université de Paris INSERM U1166, F-75013 France (I.D., A.L.)
| | - Carlo Napolitano
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Molecular Cardiology, ICS Maugeri, IRCCS and Department of Molecular Medicine, University of Pavia, Italy (A.M., C.N., S.G.P.)
| | - Wataru Shimizu
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan (K.S., W.S., T.A.).,Department of Cardiovascular Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan (W.S., V.P.)
| | - Jean-Jacques Schott
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,L'Institut du Thorax, INSERM, CNRS, UNIV Nantes, France (J.B., J.-J.S., J.-B.G., V.P.).,L'Institut du Thorax, CHU Nantes, Service de Cardiologie, France (A.A., J.-J.S., J.-B.G.)
| | - Jean-Baptiste Gourraud
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,L'Institut du Thorax, INSERM, CNRS, UNIV Nantes, France (J.B., J.-J.S., J.-B.G., V.P.).,L'Institut du Thorax, CHU Nantes, Service de Cardiologie, France (A.A., J.-J.S., J.-B.G.)
| | - Takeru Makiyama
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Japan (T.M.)
| | - Seiko Ohno
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Japan (K.H., S.O., H.I., M.H.).,Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, Japan (S.O., H.I., M.H.).,Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Suita, Japan (S.O.)
| | - Hideki Itoh
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Japan (K.H., S.O., H.I., M.H.).,Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, Japan (S.O., H.I., M.H.)
| | - Andrew D Krahn
- Heart Rhythm Services, Division of Cardiology, Department of Medicine, University of British Columbia, Vancouver, Canada (B.D., A.D.K.)
| | - Charles Antzelevitch
- Lankenau Institute for Medical Research and Lankenau Heart Institute, Wynnewood, PA (C.A.).,Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA (C.A.)
| | - Dan M Roden
- Department of Biomedical Informatics (D.M.R.), Vanderbilt University Medical Center, Nashville, TN.,Department of Medicine (M.B.S., P.E.W., D.M.R.), Vanderbilt University Medical Center, Nashville, TN.,Department of Pharmacology (D.M.R.), Vanderbilt University Medical Center, Nashville, TN
| | - Johan Saenen
- Department of Cardiology, Antwerp University Hospital, Belgium (J.S.)
| | - Martin Borggrefe
- Department of Medicine, University Medical Center Mannheim, and German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Germany (B.R., M.B.)
| | - Katja E Odening
- Department of Cardiology and Angiology I, Heart Center University of Freiburg, Medical Faculty, Germany (J.S., K.E.O.)
| | - Patrick T Ellinor
- Cardiac Arrhythmia Service, Massachusetts General Hospital, Boston (S.A.L., P.T.E.).,Cardiovascular Disease Initiative and Program in Medical and Population Genetics, Broad Institute, Cambridge, MA (S.A.L., P.T.E.)
| | - Jacob Tfelt-Hansen
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Denmark (R.J., P.E.W., J.T.-H.).,Department of Forensic Medicine, Faculty of Medical Sciences, University of Copenhagen, Denmark (J.T.-H.)
| | - Jonathan R Skinner
- Cardiac Inherited Disease Group, Starship Children's Hospital, Auckland, New Zealand (J.R.S.)
| | - Maarten P van den Berg
- Department of Cardiology, University Medical Center Groningen, University of Groningen, The Netherlands (M.P.v.d.B.)
| | - Morten Salling Olesen
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet (Copenhagen University Hospital), Denmark (M.S.O.).,Department of Biomedical Sciences, University of Copenhagen, Denmark (M.S.O.)
| | - Josep Brugada
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Arrhythmia Unit, Hospital Sant Joan de Déu, Institut d'Investigació August Pi i Sunyer (IDIBAPS), Cardiovascular Institute, and Hospital Clinic de Barcelona, Universitat de Barcelona, Spain (J.B.)
| | - Ramón Brugada
- Center for Biomedical Diagnosis, Hospital Clinic de Barcelona, Universitat de Barcelona; Institut d'Investigació August Pi i Sunyer (IDIBAPS); Cardiovascular Genetics Center, University of Girona-IDIBGI; and Medical Science Department, School of Medicine, University of Girona, Spain (O.C., R.B.).,Cardiovascular Genetics Center, University of Girona-IDIBGI, and Medical Science Department, School of Medicine, University of Girona, Spain (R.B.).,Cardiology Service, Hospital Josep Trueta, Girona, Spain (R.B.)
| | - Naomasa Makita
- National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan (N.M.)
| | - Jeroen Breckpot
- Centre for Human Genetics, University Hospitals Leuven, Belgium (J.B.)
| | - Masao Yoshinaga
- National Hospital Organization Kagoshima Medical Center, Japan (Y.K., M.Y.)
| | - Elijah R Behr
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Molecular and Clinical Sciences Research Institute, St George's University of London and Cardiology Clinical Academic Group, St George's University Hospitals NHS Foundation Trust, United Kingdom (Y.D.W., A.A., E.R.B.)
| | - Annika Rydberg
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Department of Clinical Sciences, Unit of Paediatrics, Umeå University, Sweden (U.-B.D., A.R.)
| | - Takeshi Aiba
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan (K.S., W.S., T.A.)
| | - Stefan Kääb
- Department of Internal Medicine I, University Hospital of the Ludwig Maximilians University, Munich, Germany (B.M.B., M.M.-N., S.K.)
| | - Silvia G Priori
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Molecular Cardiology, ICS Maugeri, IRCCS and Department of Molecular Medicine, University of Pavia, Italy (A.M., C.N., S.G.P.)
| | - Pascale Guicheney
- INSERM, Sorbonne University, UMRS 1166, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France (P.G.)
| | - Hanno L Tan
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Netherlands Heart Institute, Utrecht (H.L.T.)
| | - Christopher Newton-Cheh
- Cardiovascular Research Center and Center for Genomic Medicine, Massachusetts General Hospital, Boston (C.N.-C.)
| | - Michael J Ackerman
- Departments of Cardiovascular Medicine (Division of Heart Rhythm Services and the Windland Smith Rice Genetic Heart Rhythm Clinic), Pediatric and Adolescent Medicine (Division of Pediatric Cardiology), and Molecular Pharmacology & Experimental Therapeutics (Windland Smith Rice Sudden Death Genomics Laboratory), Mayo Clinic, Rochester, MN (K.L.T., D.J.T., J.M.B., M.J.A.)
| | - Peter J Schwartz
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Eric Schulze-Bahr
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,Institute for Genetics of Heart Diseases, Department of Cardiovascular Medicine, University Hospital Muenster, Germany (M.E., B.S., S.Z., E.S.-B.)
| | - Vincent Probst
- Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.).,L'Institut du Thorax, INSERM, CNRS, UNIV Nantes, France (J.B., J.-J.S., J.-B.G., V.P.).,Department of Cardiovascular Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan (W.S., V.P.)
| | - Minoru Horie
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Japan (K.H., S.O., H.I., M.H.).,Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, Japan (S.O., H.I., M.H.)
| | - Arthur A Wilde
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
| | - Michael W T Tanck
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam UMC, University of Amsterdam, The Netherlands (M.W.T.T.)
| | - Connie R Bezzina
- Amsterdam UMC, University of Amsterdam, Heart Center; Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, The Netherlands (N.L., R.T., Y.M., P.G.P., L.B., R.W., N.H., H.L.T., A.A.W., C.R.B.).,Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart - ERN GUARD-Heart (N.L., L.C., Y.M., P.G.P., L.B., R.W., J.B., M.E., A.M., U.-B.D., Y.D.W., T.R., R.J., N.H., F.D., G.S.-B., I.D., A.L., C.N., J.-J.S., J.-B.G., J.T.-H., J.B., E.R.B., A.R., S.G.P., H.L.T., P.J.S., E.S.-B., V.P., A.A.W., C.R.B.)
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Mohlkert L, Sjöberg G, Rydberg A, Pegelow Halvorsen C, Tufvesson E, Hallberg J, Domellöf M, Norman M. Lung function and pulmonary vascular resistance are not associated in 6-year-old children born extremely preterm. Acta Paediatr 2020; 109:746-753. [PMID: 31557349 DOI: 10.1111/apa.15030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/21/2019] [Accepted: 09/24/2019] [Indexed: 12/27/2022]
Abstract
AIM Children born preterm are at increased risk of reduced lung function. The aim was to test whether lung function was associated with pulmonary vascular resistance. METHODS Participants were recruited from a population-based cohort born in 2004-2007. Lung function was assessed with spirometry after administration of a beta2-agonist. Forced vital capacity (FVC) and forced expiratory volume in one second (FEV1 ) were determined. Estimations of pulmonary vascular resistance, arterial dimensions, right ventricular wall thickness, sphericity, and systolic (TAPSE) and diastolic functions were performed with echocardiography. Adjusted regression analyses were used to study associations. RESULTS Sixty-six children (33 boys) born at 22-26 weeks of gestational age (birthweights 460-1134 g) were assessed at a mean age of 6.7 years. Despite large variations in lung function with FVC z-scores ranging from -4.6 to +2.8, there were no associations between lung function and pulmonary arterial pressure, right ventricular structure or function. Children with higher FVC z-scores (r = .52, β = .55 mm, P = .015) and higher FEV1 z-scores (r = .58, β = .73 mm, P = .001) exhibited larger pulmonary arteries. CONCLUSION In children born extremely preterm, lung function was not associated with pulmonary vascular resistance. Routine echocardiographic evaluation of extremely preterm children may not be indicated at age 6.5 years.
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Affiliation(s)
- Lilly‐Ann Mohlkert
- Division of Paediatrics Department of Clinical Science, Intervention and Technology Karolinska Institutet Stockholm Sweden
- Sachs' Children and Youth Hospital Södersjukhuset Stockholm Sweden
| | - Gunnar Sjöberg
- Department of Women’s and Children’s Health Karolinska Institutet Stockholm Sweden
| | - Annika Rydberg
- Department of Clinical Sciences Paediatrics Umeå University Umeå Sweden
| | - Cecilia Pegelow Halvorsen
- Sachs' Children and Youth Hospital Södersjukhuset Stockholm Sweden
- Department of Clinical Science and Education Karolinska Institutet Stockholm Sweden
| | - Ellen Tufvesson
- Department of Clinical Sciences Lund, Respiratory Medicine and Allergology Lund University Lund Sweden
| | - Jenny Hallberg
- Sachs' Children and Youth Hospital Södersjukhuset Stockholm Sweden
- Institute of Environmental Medicine Karolinska Institutet Stockholm Sweden
| | - Magnus Domellöf
- Department of Clinical Sciences Paediatrics Umeå University Umeå Sweden
| | - Mikael Norman
- Division of Paediatrics Department of Clinical Science, Intervention and Technology Karolinska Institutet Stockholm Sweden
- Department of Neonatal Medicine Karolinska University Hospital Stockholm Sweden
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Cuneo BF, Kaizer AM, Clur SA, Swan H, Herberg U, Winbo A, Rydberg A, Haugaa K, Etheridge S, Ackerman MJ, Dagradi F, Killen SA, Wacker-Gussmann A, Benson DW, Wilde A, Pan Z, Lam A, Spazzolini C, Horigome H, Schwartz PJ. Mothers with long QT syndrome are at increased risk for fetal death: findings from a multicenter international study. Am J Obstet Gynecol 2020; 222:263.e1-263.e11. [PMID: 31520628 DOI: 10.1016/j.ajog.2019.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Most fetal deaths are unexplained. Long QT syndrome is a genetic disorder of cardiac ion channels. Affected individuals, including fetuses, are predisposed to sudden death. We sought to determine the risk of fetal death in familial long QT syndrome, in which the mother or father carries the long QT syndrome genotype. In addition, we assessed whether risk differed if the long QT syndrome genotype was inherited from the mother or father. OBJECTIVE This was a retrospective review of pregnancies in families with the 3 most common heterozygous pathogenic long QT syndrome genotypes in KCNQ1 (LQT1), KCNH2 (LQT2), or SCN5A (LQT3), which occur in approximately 1 in 2000 individuals. The purpose of our study was to compare pregnancy and birth outcomes in familial long QT syndrome with the normal population and between maternal and paternal carriers of the long QT syndrome genotype. We hypothesized that fetal death before (miscarriage) and after (stillbirths) 20 weeks gestation would be increased in familial long QT syndrome compared with the normal population and that the parent of origin would not affect birth outcomes. STUDY DESIGN Our study was a multicenter observational case series of 148 pregnancies from 103 families (80 mothers, 23 fathers) with familial long QT syndrome (60 with LQT1, 29 with LQT2, 14 with LQT3) who were recruited from 11 international centers with expertise in hereditary heart rhythm diseases, pediatric and/or adult electrophysiology, and high-risk pregnancies. Clinical databases from these sites were reviewed for long QT syndrome that occurred in men or women of childbearing age (18-40 years). Pregnancy outcomes (livebirth, stillbirth, and miscarriage), birthweights, and gestational age at delivery were compared among long QT syndrome genotypes and between maternal vs paternal long QT syndrome-affected status with the use of logistic regression analysis. RESULTS Most offspring (80%; 118/148) were liveborn at term; 66% of offspring (73/110) had long QT syndrome. Newborn infants of mothers with long QT syndrome were delivered earlier and, when the data were controlled for gestational age, weighed less than newborn infants of long QT syndrome fathers. Fetal arrhythmias were observed rarely, but stillbirths (fetal death at >20 weeks gestation) were 8 times more frequent in long QT syndrome (4% vs approximately 0.5%); miscarriages (fetal death at ≤20 weeks gestation) were 2 times that of the general population (16% vs 8%). The likelihood of fetal death was significantly greater with maternal vs paternal long QT syndrome (24.4% vs 3.4%; P=.036). Only 10% of all fetal deaths underwent postmortem long QT syndrome testing; 2 of 3 cases were positive for the family long QT syndrome genotype. CONCLUSION This is the first report to demonstrate that mothers with long QT syndrome are at increased risk of fetal death and to uncover a previously unreported cause of stillbirth. Our results suggest that maternal effects of long QT syndrome channelopathy may cause placental or myometrial dysfunction that confers increased susceptibility to fetal death and growth restriction in newborn survivors, regardless of long QT syndrome status.
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23
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Hansson L, Lind T, Öhlund I, Wiklund U, Rydberg A. Increased abdominal fat mass and high fat consumption in young school children with congenital heart disease: results from a case‐control study. J Hum Nutr Diet 2020; 33:566-573. [DOI: 10.1111/jhn.12739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- L. Hansson
- Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
| | - T. Lind
- Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
| | - I. Öhlund
- Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
| | - U. Wiklund
- Department of Radiation Sciences Biomedical Engineering Umeå University Umeå Sweden
| | - A. Rydberg
- Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
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Skogby S, Moons P, Johansson B, Sunnegårdh J, Christersson C, Nagy E, Winberg P, Hanséus K, Trzebiatowska-Krzynska A, Fadl S, Fernlund E, Kazamia K, Rydberg A, Zühlke L, Goossens E, Bratt EL. Outpatient volumes and medical staffing resources as predictors for continuity of follow-up care during transfer of adolescents with congenital heart disease. Int J Cardiol 2020; 310:51-57. [PMID: 31959410 DOI: 10.1016/j.ijcard.2020.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/06/2019] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Providing continuous follow-up care to patients with congenital heart disease (CHD) remains a challenge in many settings. Previous studies highlight that patients with CHD experience discontinuation of follow-up care, but mainly describe a single-centre perspective, neglecting inter-institutional variations. Hospital-related factors above and beyond patient-related factors are believed to affect continuity of care. The present multicentre study therefore investigated (i) proportion of "no follow-up care"; (ii) transfer destinations after leaving paediatric cardiology; (iii) variation in proportions of no follow-up between centres; (iv) the association between no follow-up and outpatient volumes, and (v) its relationship with staffing resources at outpatient clinics. METHODS An observational, multicentre study was conducted in seven university hospitals. In total, 654 adolescents with CHD, born between 1991 and 1993, with paediatric outpatient visit at age 14-18 years were included. Transfer status was determined 5 years after the intended transfer to adult care (23y), based on medical files, self-reports and registries. RESULTS Overall, 89.7% of patients were receiving adult follow-up care after transfer; 6.6% had no follow-up; and 3.7% were untraceable. Among patients in follow-up care, only one remained in paediatric care and the majority received specialist adult CHD care. Significant variability in proportions of no follow-up were identified across centres. Higher outpatient volumes at paediatric outpatient clinics were associated with better continued follow-up care after transfer (OR = 1.061; 95% CI = 1.001 - 1.124). Medical staffing resources were not found predictive. CONCLUSION Our findings support the theory of hospital-related factors influencing continuity of care, above and beyond patient-related characteristics.
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Affiliation(s)
- Sandra Skogby
- Institute of Health and Care Sciences, University of Gothenburg, Arvid Wallgrens Backe, Box 457, 405 30 Gothenburg, Sweden; Department of Paediatric Cardiology, Queen Silvia's Children's Hospital, Rondvägen 10, 416 50 Gothenburg, Sweden; KU Leuven Department of Public Health and Primary Care, Kapucijnenvoer 35, PB 7001, 3000 Leuven, Belgium
| | - Philip Moons
- Institute of Health and Care Sciences, University of Gothenburg, Arvid Wallgrens Backe, Box 457, 405 30 Gothenburg, Sweden; KU Leuven Department of Public Health and Primary Care, Kapucijnenvoer 35, PB 7001, 3000 Leuven, Belgium; Department of Paediatrics and Child Health, University of Cape Town, Klipfrontein Road Mowbray, Cape Town 7700, South Africa
| | - Bengt Johansson
- Department of Public Health and Clinical Medicine, Umeå University, 90185 Umeå, Sweden
| | - Jan Sunnegårdh
- Department of Paediatric Cardiology, Queen Silvia's Children's Hospital, Rondvägen 10, 416 50 Gothenburg, Sweden
| | - Christina Christersson
- Department of Medical Sciences, Cardiology, Uppsala University, Sjukhusvägen 7, 753 09 Uppsala, Sweden
| | - Edit Nagy
- Heart and Vascular Theme, Congenital Heart Disease Group, Karolinska University Hospital, Stockholm, 171 76 Solna, Sweden
| | - Per Winberg
- Department of Paediatric Cardiology, Karolinska University Hospital, Eugeniavägen 23 C8:34, 17176 Stockholm, Sweden
| | - Katarina Hanséus
- Department of Paediatric Cardiology, Skåne University Hospital, Barnhjärtcentrum avd 67, 221 85 Lund, Sweden
| | - Aleksandra Trzebiatowska-Krzynska
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Sjukhusvägen, 581 85 Linköping, Sweden; Department of Cardiology, Department of Medical and Health Sciences, Linköping University, Sjukhusvägen, 58185 Linköping, Sweden
| | - Shalan Fadl
- Department of Paediatric and Women's Health Care, Örebro University Hospital, 701 85 Örebro, Sweden
| | - Eva Fernlund
- Department of Clinical and Experimental Medicine, Division of Paediatrics, Crown Princess Victoria Children's Hospital, Linköping University, 581 85 Linköping, Sweden; Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Department of Paediatric Cardiology, 221 85 Lund, Sweden
| | - Kalliopi Kazamia
- Department of Paediatric Cardiology, Uppsala University, Sjukhusvägen 85, 75185 Uppsala, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Unit of Paediatrics, Umeå University, Umeå University Hospital, 90185 Umeå, Sweden
| | - Liesl Zühlke
- Division of Paediatric Cardiology, Department of Paediatric and Child Health, Red Cross War Memorial Children's Hospital, Faculty of Health Sciences, University of Cape Town, Klipfrontein Road Mowbray, Cape Town 7700, South Africa; Division of Cardiology, Department of Medicine, Groote Schuur Hospital, Faculty of Health Sciences, University of Cape Town, Anzio Road Mowbray, Cape Town 7700, South Africa
| | - Eva Goossens
- KU Leuven Department of Public Health and Primary Care, Kapucijnenvoer 35, PB 7001, 3000 Leuven, Belgium; Research Foundation Flanders (FWO), Egmontstraat 5, 1030 Brussels, Belgium
| | - Ewa-Lena Bratt
- Institute of Health and Care Sciences, University of Gothenburg, Arvid Wallgrens Backe, Box 457, 405 30 Gothenburg, Sweden; Department of Paediatric Cardiology, Queen Silvia's Children's Hospital, Rondvägen 10, 416 50 Gothenburg, Sweden.
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Öhman A, El-Segaier M, Bergman G, Hanséus K, Malm T, Nilsson B, Pivodic A, Rydberg A, Sonesson SE, Mellander M. Changing Epidemiology of Hypoplastic Left Heart Syndrome: Results of a National Swedish Cohort Study. J Am Heart Assoc 2020; 8:e010893. [PMID: 30661430 PMCID: PMC6497328 DOI: 10.1161/jaha.118.010893] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Norwood surgery provides a palliative surgical option for hypoplastic left heart syndrome and has been available in Sweden since 1993. The practice of prenatal ultrasound screening was gradually implemented in the same era, resulting in an increased prenatal detection rate. Our primary aims were to study changes in the incidence of live births, prenatal detection rate, and the termination of pregnancies over time. The secondary aims were to study the proportion of live-borns undergoing surgery and to identify factors that influenced whether surgery was or was not performed. Methods and Results Neonates with hypoplastic left heart syndrome with aortic atresia born 1990-2010 were identified through national databases, surgical files, and medical records. The fetal incidence was estimated from the period when prenatal screening was rudimentary. The study period was divided into the presurgical, early surgical, and late surgical periods. The incidence was calculated as the overall yearly incidence for each time period and sex separately. Factors influencing whether surgery was performed were analyzed using Cox-logistic regression. The incidence at live birth decreased from 15.4 to 8.4 per 100 000. The prenatal detection rate increased from 27% to 63%, and terminations increased from 19% to 56%. The odds of having surgery was higher in the late period and higher in the group with prenatal diagnosis. Conclusions We observed a decrease in incidence of live-borns with hypoplastic left heart syndrome aortic atresia. There was in increase in prenatal detection rate and an increase in termination of pregnancy. The proportion of live-borns who underwent surgery increased between time periods.
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Affiliation(s)
- Annika Öhman
- 1 Department of Paediatric Cardiology Queen Silvia Children's Hospital Sahlgrenska University Hospital Gothenburg Sweden
| | - Milad El-Segaier
- 2 Department of Paediatric Cardiology Skåne University Hospital Lund Sweden
| | - Gunnar Bergman
- 4 Department of Pediatric Cardiology Karolinska University Hospital Stockholm Sweden
| | - Katarina Hanséus
- 2 Department of Paediatric Cardiology Skåne University Hospital Lund Sweden
| | - Torsten Malm
- 3 Department of Paediatric Cardiac Surgery Skåne University Hospital Lund Sweden
| | - Boris Nilsson
- 1 Department of Paediatric Cardiology Queen Silvia Children's Hospital Sahlgrenska University Hospital Gothenburg Sweden
| | | | - Annika Rydberg
- 6 Department of Clinical Sciences, Paediatrics Umeå University Umeå Sweden
| | - Sven-Erik Sonesson
- 7 Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Mats Mellander
- 1 Department of Paediatric Cardiology Queen Silvia Children's Hospital Sahlgrenska University Hospital Gothenburg Sweden
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Hansson L, Lind T, Wiklund U, Öhlund I, Rydberg A. Fluid restriction negatively affects energy intake and growth in very low birthweight infants with haemodynamically significant patent ductus arteriosus. Acta Paediatr 2019; 108:1985-1992. [PMID: 30980416 DOI: 10.1111/apa.14815] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 11/27/2022]
Abstract
AIM We explored if fluid restriction in very low birthweight (VLBW) infants with a haemodynamically significant patent ductus arteriosus (PDA) affected energy and protein intakes and growth. METHODS Retrospectively, we identified 90 VLBW infants that were admitted to Umea University Hospital, Sweden, between 2009 and 2012: 42 with and 48 without haemodynamically significant PDA (hsPDA). Anthropometric, fluid, energy and protein intake data during the first 28 days of life were expressed as z-scores. RESULTS In the 42 infants diagnosed with hsPDA, fluid intake was restricted after diagnosis, resulting in a decrease in energy and protein intake. No decrease was observed in the other 48 infants in the cohort. Multivariate analysis showed that the z-score of weight change depended on both ductus arteriosus status and energy intake; thus, infants with hsPDA did not grow as expected with the energy provided to them. CONCLUSION Energy and protein intake was diminished in prematurely born infants with hsPDA when fluid was restricted after diagnosis. The initial reduction in intakes may have contributed to the lower postnatal growth observed in these infants.
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Affiliation(s)
- Lena Hansson
- Department of Clinical Science Paediatrics Umeå University Umeå Sweden
| | - Torbjörn Lind
- Department of Clinical Science Paediatrics Umeå University Umeå Sweden
| | - Urban Wiklund
- Department of Radiation Sciences Biomedical Engineering Umeå University Umeå Sweden
| | - Inger Öhlund
- Department of Clinical Science Paediatrics Umeå University Umeå Sweden
| | - Annika Rydberg
- Department of Clinical Science Paediatrics Umeå University Umeå Sweden
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27
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Clur SAB, Vink AS, Etheridge SP, Robles de Medina PG, Rydberg A, Ackerman MJ, Wilde AA, Blom NA, Benson DW, Herberg U, Donofrio MT, Cuneo BF. Left Ventricular Isovolumetric Relaxation Time Is Prolonged in Fetal Long-QT Syndrome. Circ Arrhythm Electrophysiol 2019; 11:e005797. [PMID: 29654130 DOI: 10.1161/circep.117.005797] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 02/05/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND Long-QT syndrome (LQTS), an inherited cardiac repolarization disorder, is an important cause of fetal and neonatal mortality. Detecting LQTS prenatally is challenging. A fetal heart rate (FHR) less than third percentile for gestational age is specific for LQTS, but the sensitivity is only ≈50%. Left ventricular isovolumetric relaxation time (LVIRT) was evaluated as a potential diagnostic marker for fetal LQTS. METHODS AND RESULTS LV isovolumetric contraction time, LV ejection time, LVIRT, cycle length, and FHR were measured using pulsed Doppler waveforms in fetuses. Time intervals were expressed as percentages of cycle length, and the LV myocardial performance index was calculated. Single measurements were stratified by gestational age and compared between LQTS fetuses and controls. Receiver-operator curves were performed for FHR and normalized LVIRT (N-LVIRT). A linear mixed-effect model including multiple measurements was used to analyze trends in FHR, N-LVIRT, and LV myocardial performance index. There were 33 LQTS fetuses and 469 controls included. In LQTS fetuses, the LVIRT was prolonged in all gestational age groups (P<0.001), as was the N-LVIRT. The best cutoff to diagnose LQTS was N-LVIRT ≥11.3 at ≤20 weeks (92% sensitivity, 70% specificity). Simultaneous analysis of N-LVIRT and FHR improved the sensitivity and specificity for LQTS (area under the curve=0.96; 95% confidence interval, 0.82-1.00 at 21-30 weeks). N-LVIRT, LV myocardial performance index, and FHR trends differed significantly between LQTS fetuses and controls through gestation. CONCLUSIONS The LVIRT is prolonged in LQTS fetuses. Findings of a prolonged N-LVIRT and sinus bradycardia can improve the prenatal detection of fetal LQTS.
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Affiliation(s)
- Sally-Ann B Clur
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.).
| | - Arja S Vink
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Susan P Etheridge
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Pascale G Robles de Medina
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Annika Rydberg
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Michael J Ackerman
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Arthur A Wilde
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Nico A Blom
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - D Woodrow Benson
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Ulrike Herberg
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Mary T Donofrio
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
| | - Bettina F Cuneo
- Departments of Pediatric Cardiology, Obstetrics and Gynecology, and Cardiology, Academic Medical Center, Amsterdam, The Netherlands (S.-A.B.C., A.S.V., P.G.R.d.M., A.A.W., N.A.B.). Department of Pediatric Cardiology, University of Utah & Primary Children's Hospital, Salt Lake City (S.P.E.). Department of Clinical Sciences, Pediatrics, Umeå University, Sweden (A.R.). Department of Cardiology, Mayo Clinic, Rochester, MN (M.J.A.). Department of Pediatrics, Medical College of Wisconsin, Milwaukee (D.W.B.). Department of Pediatric Cardiology, University of Bonn, Germany (U.H.). Pediatric Cardiology, Children's National Medical Center, Washington, DC (M.T.D.). The Heart Institute, Department of Pediatrics, Children's Hospital Colorado, Denver (B.F.C.)
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Burström Å, Acuña Mora M, Öjmyr-Joelsson M, Sparud-Lundin C, Rydberg A, Hanseus K, Frenckner B, Nisell M, Moons P, Bratt EL. Ready for Transfer to Adult Care? A Triadic Evaluation of Transition Readiness in Adolescents With Congenital Heart Disease and Their Parents. J Fam Nurs 2019; 25:447-468. [PMID: 31342815 PMCID: PMC6724455 DOI: 10.1177/1074840719864255] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Transfer to adult care for adolescents with chronic conditions ought to be determined by transition readiness. The aims of this study were (a) to describe the level of readiness for transition in adolescents with congenital heart disease, (b) to compare adolescents' assessment of transition readiness with their parents' assessments, and (c) to study potential correlates of transition readiness. A total of 157 triads of adolescents aged 14 to 18 years and their parents completed the Readiness for Transition Questionnaire. Adolescents scored higher on overall readiness than their parents. Multivariable analyses revealed that higher levels of adolescents' overall readiness were associated with a less threatening view of the illness, a higher level of empowerment, and with higher mothers' and fathers' overall readiness scores. Adolescents' responsibility scores were positively associated with age and parental adolescent responsibility scores. Parental involvement scores were negatively associated with adolescents' age and positively with the mothers' parental involvement scores. By using a triadic evaluation, the results of the present study significantly extend what is currently known about this population.
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Affiliation(s)
- Åsa Burström
- Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Stockholm, Sweden
| | | | - Maria Öjmyr-Joelsson
- Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Stockholm, Sweden
| | | | | | | | - Björn Frenckner
- Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Stockholm, Sweden
| | - Margret Nisell
- Karolinska Institutet, Stockholm, Sweden
- The Red Cross University College, Stockholm, Sweden
| | - Philip Moons
- University of Gothenburg, Sweden
- KU Leuven, Belgium
| | - Ewa-Lena Bratt
- University of Gothenburg, Sweden
- The Queen Silvia Children’s Hospital, Gothenburg, Sweden
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29
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Charisopoulou D, Koulaouzidis G, Rydberg A, Henein MY. Exercise worsening of electromechanical disturbances: A predictor of arrhythmia in long QT syndrome. Clin Cardiol 2019; 42:701. [PMID: 31265760 PMCID: PMC6605001 DOI: 10.1002/clc.23216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Dafni Charisopoulou
- Institute of Public Health and Clinical Medicine, Umea University, Sweden.,Department of Paediatric Cardiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - George Koulaouzidis
- Institute of Public Health and Clinical Medicine, Umea University, Sweden.,Department of Cardiology, Mid Yorkshire Hospitals NHS Trust, Wakefield, UK
| | - Annika Rydberg
- Department of Clinical Sciences, Paediatrics, Umea University, Umea, Sweden
| | - Michael Y Henein
- Institute of Public Health and Clinical Medicine, Umea University, Sweden.,Molecular and Clinical Sciences Research Institute, St George University London, London, UK.,Brunel University, Middlesex, UK
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30
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Jansweijer JA, van Spaendonck-Zwarts KY, Tanck MWT, van Tintelen JP, Christiaans I, van der Smagt JJ, Vermeer AMC, Bos JM, Moss AJ, Swan H, Priori SG, Rydberg A, Tfelt-Hansen J, Ackerman MJ, Olivotto I, Charron P, Gimeno JR, van den Berg MP, Wilde AAM, Pinto YM. Heritability in genetic heart disease: the role of genetic background. Open Heart 2019; 6:e000929. [PMID: 31245010 PMCID: PMC6546190 DOI: 10.1136/openhrt-2018-000929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/17/2019] [Accepted: 02/03/2019] [Indexed: 11/22/2022] Open
Abstract
Background Mutations in genes encoding ion channels or sarcomeric proteins are an important cause of hereditary cardiac disease. However, the severity of the resultant disease varies considerably even among those with an identical mutation. Such clinical variation is often thought to be explained largely by differences in genetic background or 'modifier genes'. We aimed to test the prediction that identical genetic backgrounds result in largely similar clinical expression of a cardiac disease causing mutation, by studying the clinical expression of mutations causing cardiac disease in monozygotic twins. Methods We compared first available clinical information on 46 monozygotic twin pairs and 59 control pairs that had either a hereditary cardiomyopathy or channelopathy. Results Despite limited power of this study, we found significant heritability for corrected QT interval (QTc) in long QT syndrome (LQTS). We could not detect significant heritability for structural traits, but found a significant environmental effect on thickness of the interventricular septum in hypertrophic cardiomyopathy. Conclusions Our study confirms previously found robust heritability for electrical traits like QTc in LQTS, and adds information on low or lacking heritability for structural traits in heritable cardiomyopathies. This may steer the search for genetic modifiers in heritable cardiac disease.
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Affiliation(s)
- Joeri A Jansweijer
- Heart Center, Clinical and Experimental Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | | | - Michael W T Tanck
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - J Peter van Tintelen
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Department of Clinical Genetics, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Imke Christiaans
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Jasper J van der Smagt
- Department of Medical Genetics, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Alexa M C Vermeer
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - J Martijn Bos
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Arthur J Moss
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, New York, USA
| | - Heikki Swan
- Heart and Lung Center, Helsinki University Central Hospital, Helsinki, Finland
| | - Sylvia G Priori
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Annika Rydberg
- Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Jacob Tfelt-Hansen
- Department of Cardiology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Michael J Ackerman
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Iacopo Olivotto
- Department of Cardiology, Careggi University Hospital, Florence, Italy
| | - Philippe Charron
- Department of Clinical Genetics, Hopital Ambroise-Pare, Boulogne-Billancourt, France
| | - Juan R Gimeno
- Department of Cardiology, Universitary Hospital Virgen Arrixaca, El Palmar, Murcia, Spain
| | | | - Arthur AM Wilde
- Heart Center, Clinical and Experimental Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Centre of Excellence in Research of Hereditary Disorders, Princess Al-Jawhara Al-Brahim, Jeddah, Saudi Arabia
| | - Yigal M Pinto
- Heart Center, Clinical and Experimental Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
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31
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Alenius Dahlqvist J, Sunnegårdh J, Hanséus K, Strömvall Larsson E, Nygren A, Dalén M, Berggren H, Johansson Ramgren J, Wiklund U, Rydberg A. Pacemaker treatment after Fontan surgery—A Swedish national study. CONGENIT HEART DIS 2019; 14:582-589. [DOI: 10.1111/chd.12766] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/24/2019] [Accepted: 02/24/2019] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jan Sunnegårdh
- Department of Cardiology The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Institute of Clinical Sciences, Gothenburg University Gothenburg Sweden
| | - Katarina Hanséus
- Department of Clinical Sciences Lund Children’s Heart Center, Skåne University Hospital, Lund University Lund Sweden
| | - Eva Strömvall Larsson
- Department of Cardiology The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Institute of Clinical Sciences, Gothenburg University Gothenburg Sweden
| | - Anders Nygren
- Department of Cardiology The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Institute of Clinical Sciences, Gothenburg University Gothenburg Sweden
| | - Magnus Dalén
- Department of Molecular Medicine and Surgery Karolinska Institutet, Karolinska University Hospital Stockholm Sweden
- Department of Cardiac Surgery Karolinska Institutet, Karolinska University Hospital Stockholm Sweden
| | - Håkan Berggren
- Department of Pediatric Cardiac Surgery Children’s Heart Center, The Queen Silvia Children’s Hospital Gothenburg Sweden
| | - Jens Johansson Ramgren
- Department of Pediatric Cardiac Surgery Children’s Heart Center, Skånes University Hospital Lund Sweden
| | - Urban Wiklund
- Department of Radiation Sciences, Biomedical Engineering Umeå University Umeå Sweden
| | - Annika Rydberg
- Department of Clinical Sciences Umeå University Umeå Sweden
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32
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Acuña Mora M, Sparud-Lundin C, Burström Å, Hanseus K, Rydberg A, Moons P, Bratt EL. Patient empowerment and its correlates in young persons with congenital heart disease. Eur J Cardiovasc Nurs 2019; 18:389-398. [DOI: 10.1177/1474515119835434] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: The objective of this study was to measure the level of empowerment and identify its correlates in young persons with congenital heart disease. Study design: Patients aged 14–18 years with congenital heart disease, and under active follow-up in one of four paediatric cardiology centres in Sweden were invited to participate in a cross-sectional study. A total of 202 young persons returned the questionnaires. Patient empowerment was measured with the Gothenburg Young Persons Empowerment Scale that allows the calculation of total and subscale scores. Univariate and multivariate linear regression analyses were undertaken to analyse possible correlates, including: sex, age, health behaviours, knowledge of congenital heart disease, quality of life, patient-reported health, congenital heart disease complexity, transition readiness and illness perception. Results: The mean empowerment score was 54.6±10.6 (scale of 15–75). Univariate analyses showed that empowerment was associated with age, quality of life, transition readiness, illness perception, health behaviours and patient-reported health (perceived physical appearance, treatment anxiety, cognitive problems and communication issues). However, multivariable linear regression analyses identified that only transition readiness (β=0.28, P<0.001) and communication (β=0.36, P<0.001) had a positive association with patient empowerment. These variables were also significantly associated with the subscale scores of the empowerment scale of knowledge and understanding ( P<0.001), shared decision-making ( P<0.001) and enabling others ( P<0.01). The overall models’ explained variance ranged from 8% to 37%. Conclusion: Patient empowerment was associated with transition readiness and fewer problems communicating. While it is not possible to establish the directionality of the associations, interventions looking to increase empowerment could benefit from using these variables (or measurements) for evaluation purposes.
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Affiliation(s)
- Mariela Acuña Mora
- Institute of Health and Care Sciences, University of Gothenburg, Sweden
- KU Leuven Department of Public Health and Primary Care, Belgium
| | | | - Åsa Burström
- Institution for Women’s and Children’s Health, Karolinska Institute, Sweden
- Department of Paediatric Cardiology, Astrid Lindgren Children’s Hospital, Sweden
| | - Katarina Hanseus
- Department of Pediatric Cardiology, Skåne University Hospital, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Sweden
| | - Philip Moons
- Institute of Health and Care Sciences, University of Gothenburg, Sweden
- KU Leuven Department of Public Health and Primary Care, Belgium
- Department of Paediatrics and Child Health, University of Cape Town, South Africa
| | - Ewa-Lena Bratt
- Institute of Health and Care Sciences, University of Gothenburg, Sweden
- Department of Pediatric Cardiology, The Queen Silvia Children’s Hospital, Sweden
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33
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Dahlqvist JA, Wiklund U, Karlsson M, Hanséus K, Strömvall-Larsson E, Nygren A, Eliasson H, Rydberg A. Sinus node dysfunction in patients with Fontan circulation: could heart rate variability be a predictor for pacemaker implantation? Pediatr Cardiol 2019; 40:685-693. [PMID: 30918992 PMCID: PMC6451711 DOI: 10.1007/s00246-019-02092-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/13/2019] [Indexed: 11/03/2022]
Abstract
Sinus node dysfunction (SND) causes significant morbidity in patients after Fontan surgery. Heart rate variability (HRV) reflects the autonomic regulation of the heart, and changes in HRV have been associated with SND in adults. We aimed to study whether changes in HRV could be detected in 24-h electrocardiographic (ECG) recordings in Fontan patients with SND. We compared HRV results from two patient groups; patients with Fontan circulation who later required a pacemaker due to severe SND (n = 12) and patients with Fontan circulation and SND, without indication for pacemaker treatment (n = 11), with two control groups; patients with Fontan circulation without SND (n = 90) and healthy controls (n = 66). The Poincaré plot index SD2 (representing changes in heart rate over 24-h) and the very low-frequency (VLF) HRV component were significantly higher in both SND groups, both compared with healthy controls and patients with Fontan circulation without SND. In SND patients with pacemakers, SD2 and VLF were slightly reduced compared to SND patients without pacemaker (p = 0.06). In conclusion, in Fontan patients with SND the HRV is significantly higher compared to healthy controls and Fontan patients without SND. However, in patients with severe SND requiring pacemaker, SD2 and VLF tended to be lower than in patients with SND without pacemaker, which could indicate a reduced diurnal HRV in addition to the severe bradycardia. This is a small study, but our results indicate that HRV analysis might be a useful method in the follow-up of Fontan patients regarding development of SND.
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Affiliation(s)
| | - Urban Wiklund
- 0000 0001 1034 3451grid.12650.30Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Marcus Karlsson
- 0000 0001 1034 3451grid.12650.30Department of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden
| | - Katarina Hanséus
- 0000 0001 0930 2361grid.4514.4Department of Clinical Sciences Lund, Children Heart Centre, Skåne University Hospital, Lund University, Lund, Sweden
| | - Eva Strömvall-Larsson
- 0000 0000 9919 9582grid.8761.8Department of Cardiology, The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Institute of Clinical Sciences, Gothenburg University, Gothenburg, Sweden
| | - Anders Nygren
- 0000 0000 9919 9582grid.8761.8Department of Cardiology, The Queen Silvia Children’s Hospital, Sahlgrenska University Hospital, Institute of Clinical Sciences, Gothenburg University, Gothenburg, Sweden
| | - Håkan Eliasson
- 0000 0000 9241 5705grid.24381.3cDepartment of Women’s and Children’s Health, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Annika Rydberg
- 0000 0001 1034 3451grid.12650.30Department of Clinical Sciences, Pediatrics, Umeå University, 901 85 Umeå, Sweden
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34
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Charisopoulou D, Koulaouzidis G, Rydberg A, Michael HY. Exercise worsening of electromechanical disturbances: A predictor of arrhythmia in long QT syndrome. Clin Cardiol 2018; 42:235-240. [PMID: 30537240 PMCID: PMC6712344 DOI: 10.1002/clc.23132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/29/2018] [Accepted: 12/06/2018] [Indexed: 01/06/2023] Open
Abstract
Background Electromechanical (EM) coupling heterogeneity is significant in long QT syndrome (LQTS), particularly in symptomatic patients; EM window (EMW) has been proposed as an indicator of interaction and a better predictor of arrhythmia than QTc. Hypothesis To investigate the dynamic response of EMW to exercise in LQTS and its predictive value of arrhythmia. Methods Forty‐seven LQTS carriers (45 ± 15 years, 20 with arrhythmic events), and 35 controls underwent exercise echocardiogram. EMW was measured as the time difference between aortic valve closure on Doppler and the end of QT interval on the superimposed electrocardiogram (ECG). Measurements were obtained at rest, peak exercise (PE) and 4 minutes into recovery. Results Patients did not differ in age, gender, heart rate, or left ventricular ejection fraction but had a negative resting EMW compared with controls (−42 ± 22 vs 17 ± 5 ms, P < 0.0001). EMW became more negative at PE (−89 ± 43 vs 16 ± 7 ms, P = 0.0001) and recovery (−65 ± 39 vs 16 ± 6 ms, P = 0.001) in patients, particularly the symptomatic, but remained unchanged in controls. PE EMW was a stronger predictor of arrhythmic events than QTc (AUC:0.765 vs 0.569, P < 0.001). B‐blockers did not affect EMW at rest but was less negative at PE (BB: −66 ± 21 vs no‐BB: −113 ± 25 ms, P < 0.001). LQT1 patients had worse PE EMW negativity than LQT2. Conclusion LQTS patients have significantly negative EMW, which worsens with exercise. These changes are more pronounced in patients with documented arrhythmic events and decrease with B‐blocker therapy. Thus, EMW assessment during exercise may help improve risk stratification and management of LQTS patients.
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Affiliation(s)
- Dafni Charisopoulou
- Institute of Public Health and Clinical Medicine, Umea University, Umea, Sweden.,Department of Paediatric Cardiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - George Koulaouzidis
- Institute of Public Health and Clinical Medicine, Umea University, Umea, Sweden.,Department of Cardiology, Mid Yorkshire Hospitals NHS Trust, Wakefield, UK
| | - Annika Rydberg
- Department of Clinical Sciences, Paediatrics, Umea University, Umea, Sweden
| | - Henein Y Michael
- Institute of Public Health and Clinical Medicine, Umea University, Umea, Sweden.,Molecular and Clinical Sciences Research Institute, St George University London, London, UK.,Brunel University, Middlesex, UK
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35
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Ismail D, Eriksson A, Mörner S, Rydberg A. Electrocardiographic Changes in Athletes of Black Ethnicity. ICFJ 2018. [DOI: 10.17987/icfj.v13i0.484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractIntensive participation in sport has positive physiological effects on the heart. The contractility of the heart improves, the ejection fraction increases and the muscle mass of the heart increases, thus leading to a greater cardiac output. Despite these positive effects, there is still an increased risk for acute cardiac events. The workload of the heart can be very high in some sports and may in some cases be the reason for sudden cardiac death. In these cases, there is often an underlying heart disease (cardiomyopathy) unknown before the actual event. Electrocardiographic examination (ECG) may reveal some of these diseases but although ECG examinations can be a useful tool to discover pathological conditions, there could be difficulties in interpreting different ECG patterns, especially in athletes. In some cases, athletes may exhibit ECG patterns that are similar to those in heart diseases such as cardiomyopathies (QRS-amplitudes, ST-segment elevation and T wave inversions in lateral leads). This pattern is even more common in athletes of African origins. Furthermore, cardiomyopathies such as hypertrophic cardiomyopathy (HCM) are more common among athletes with African heritage than in white athletes. Thus correct interpretation of ECG is crucial for several reasons: to distinguish between benign physiological (‘athlete’s heart’) and pathological changes, to lower the risk of sudden cardiac death, and to save time and money by not undertaking further examination of the heart.
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36
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Burström Å, Acuna Mora M, Öjmyr-Joelsson M, Sparud-Lundin C, Rydberg A, Hanseus K, Frenckner B, Nisell M, Moons P, Bratt EL. Parental uncertainty about transferring their adolescent with congenital heart disease to adult care. J Adv Nurs 2018; 75:380-387. [PMID: 30209810 PMCID: PMC7379976 DOI: 10.1111/jan.13852] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 07/05/2018] [Accepted: 08/17/2018] [Indexed: 11/27/2022]
Abstract
Aims To study parent's levels of uncertainty related to the transfer from pediatric to adult care in adolescents with congenital heart disease (CHD) and to identify potentially correlating factors. Background Parents acknowledge that during transition they struggle with finding ways of feeling secure in handing over the responsibility and letting go of control. Well‐prepared and informed parents who feel secure are most likely better skilled to support their adolescent and to hand over the responsibility. Design A cross‐sectional study. Methods Overall, 351 parents were included (35% response rate). Parental uncertainty was assessed using a Linear Analogue Scale (0–100). Data were collected between January ‐ August 2016. Potential correlates were assessed using the readiness for transition questionnaire and sociodemographic data. Results The mean parental uncertainty score was 42.5. Twenty‐four percent of the parents had a very low level of uncertainty (score 0–10) and 7% had a very high level (score 91–100). Overall, 26% of the mothers and 36% of the fathers indicated that they had not started thinking of the transfer yet. The level of uncertainty was negatively associated with the level of perceived overall readiness. Adolescents' age, sex, CHD complexity, and parental age were not related to uncertainty. Conclusion A wide range in the levels of uncertainty was found. Parents who were less involved in the care, or perceived their adolescent as readier for the transition, felt less uncertain. Still, thirty percent of the parents had not started to think about the transfer to adult care.
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Affiliation(s)
- Åsa Burström
- Institution for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Department of Pediatric Cardiology, Astrid Lindgren Children's Hospital, Stockholm, Sweden
| | - Mariela Acuna Mora
- Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden.,KU Leuven Department of Public Health and Primary Care, Leuven, Belgium
| | - Maria Öjmyr-Joelsson
- Institution for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Stockholm, Sweden
| | - Carina Sparud-Lundin
- Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Katarina Hanseus
- Department of Pediatric Cardiology, Skåne University Hospital, Lund, Sweden
| | - Björn Frenckner
- Institution for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Department of Pediatric Surgery, Astrid Lindgren Children's Hospital, Stockholm, Sweden
| | - Margret Nisell
- Institution for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,The Red Cross University College, Stockholm, Sweden
| | - Philip Moons
- Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden.,KU Leuven Department of Public Health and Primary Care, Leuven, Belgium
| | - Ewa-Lena Bratt
- Institute of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden.,Department of Pediatric Cardiology, The Queen Silvia Children's Hospital, Gothenburg, Sweden
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37
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Acuna Mora M, Sparud-Lundin C, Burstrom Å, Hanseus K, Rydberg A, Moons P, Bratt EL. 25Adolescents with congenital heart disease own beliefs about their illness: illness perception and potential correlates. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Acuna Mora
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
| | - C Sparud-Lundin
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
| | - Å Burstrom
- Karolinska Institute, Department for Women and Children's Health, Stockholm, Sweden
| | - K Hanseus
- Skane University Hospital, Department of Pediatric Cardiology, Lund, Sweden
| | - A Rydberg
- Umea University Hospital, Department of Clinical Sciences, Pediatrics, Umea, Sweden
| | - P Moons
- KU Leuven, Department of Public Health and Primary Care, Leuven, Belgium
| | - E L Bratt
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
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Charisopoulou D, Koulaouzidis G, Rydberg A, Henein MY. Abnormal ventricular repolarization in long QT syndrome carriers is related to short left ventricular filling time and attenuated stroke volume response during exercise. Echocardiography 2018; 35:1116-1123. [PMID: 29648704 DOI: 10.1111/echo.13891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Long QT syndrome (LQTS) carriers are characterized by abnormal ventricular repolarization, prolonged systole, and mechanical dispersion. Prolonged left ventricular (LV) systole has been shown to result in disproportionate shortening of LV filling in other conditions. The aim of this study was to assess LV filling, diastolic function, and stroke volume (SV) response to dynamic exercise, in a group of LQTS carriers. METHODS Forty-seven LQTS carriers (45 ± 15 years, 20 symptomatic) and 35 healthy individuals underwent bicycle stress echocardiogram. Electrocardiographic and echocardiographic measurements were obtained at rest, peak exercise, and 4 minutes into recovery. RESULTS Long QT syndrome carriers and controls did not differ in age, gender, heart rate, QRS duration, or LV ejection fraction. At rest, LQTS carriers had longer QTc and shorter filling time (FT). At peak exercise, QTc increased and remained longer than controls at recovery. A negative correlation was found between QTc and FT (r = -.398, P = .001) with greater fall in FT in LQTS carriers than in controls at peak exercise (-23% ± 10 vs +2% ± 3, P < .0001). FT correlated with SV (r = +.27, P = .001), which increased more in controls than in LQTS carriers (+32% ± 4 vs +2% ± 1, P < .05). These differences were more pronounced in symptomatic LQTS carriers who had shorter FT and smaller SV at peak exercise and during recovery compared to asymptomatics (P < .05). CONCLUSIONS Long QT syndrome carriers have longer QTc, but also shorter FT. These disturbances worsen at peak exercise (particularly in symptomatics) compromising LV filling and SV, hence a potential pathomechanism for adverse events.
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Affiliation(s)
- Dafni Charisopoulou
- Department of Public Health and Clinical Medicine, Umea University and Heart Centre, Umea, Sweden.,Department of Paediatric Cardiology, Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - George Koulaouzidis
- Department of Public Health and Clinical Medicine, Umea University and Heart Centre, Umea, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Paediatrics, Umea University, Umea, Sweden
| | - Michael Y Henein
- Department of Public Health and Clinical Medicine, Umea University and Heart Centre, Umea, Sweden.,Molecular & Clinical Sciences Research Institute, St George University, London, UK
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Affiliation(s)
- Annika Winbo
- Department of Clinical Sciences, Division of Pediatrics, Umeå University, Umeå, Sweden.,Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Annika Rydberg
- Department of Clinical Sciences, Division of Pediatrics, Umeå University, Umeå, Sweden
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Bratt EL, Burström Å, Hanseus K, Rydberg A, Berghammer M. Do not forget the parents-Parents' concerns during transition to adult care for adolescents with congenital heart disease. Child Care Health Dev 2018; 44:278-284. [PMID: 28980341 DOI: 10.1111/cch.12529] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/26/2017] [Accepted: 09/18/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Growing up with congenital heart disease (CHD) often means transfer to adult care and lifelong medical follow-up. An optimal transition process usually involves a multipart collaboration between the patient, their parents and other family members, and the healthcare providers. Taking an active role while knowing when it is time to step aside can be difficult for all the concerned parties, even the healthcare professionals. The aim of the present study therefore, was to explore parents' expectations and needs during their adolescent's transition to adult care. METHOD Semi-structured interviews were conducted with 18 parents of 16 adolescents (aged 13-18 years) with CHD in 4 pediatric cardiology settings in Sweden. The interviews were analysed with qualitative content analysis. RESULTS The analysis resulted in 2 main themes: (a) Feeling secure-the importance of being prepared and informed. This theme focused on the need to be prepared and informed about transition and future transfer to adult care. (b) Recognizing when to hand over at the right time. This theme addressed the process of handing over the responsibility from the parent to the adolescents and contained handing over from pediatric care to adult care. CONCLUSION Being prepared and informed about the upcoming transition process was essential. The parents underlined the importance of being involved in the transition planning for gradually handing over responsibility to the adolescent. They also considered establishing contact with the adult healthcare team before transfer as important and needed to be assured that CHD-related information of importance for the young person's daily life would be given.
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Affiliation(s)
- E L Bratt
- Institution of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden.,Department of Pediatric Cardiology, The Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Å Burström
- Institution for Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.,Department of Paediatric Cardiology, Astrid Lindgren Children's Hospital, Stockholm, Sweden
| | - K Hanseus
- Department of Pediatric Cardiology, Skåne University Hospital, Lund, Sweden
| | - A Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - M Berghammer
- University West, Department of Health Science, Trollhättan, Sweden.,Department of Pediatrics, The Queen Silvia Children's Hospital, Gothenburg, Sweden
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41
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Mohlkert LA, Hallberg J, Broberg O, Rydberg A, Halvorsen CP, Liuba P, Fellman V, Domellöf M, Sjöberg G, Norman M. The Preterm Heart in Childhood: Left Ventricular Structure, Geometry, and Function Assessed by Echocardiography in 6-Year-Old Survivors of Periviable Births. J Am Heart Assoc 2018; 7:e007742. [PMID: 29353231 PMCID: PMC5850168 DOI: 10.1161/jaha.117.007742] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 11/16/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Preterm birth has been associated with increased risk of cardiovascular morbidity in adult life. We evaluated whether preterm birth is associated with deviating cardiac structure and function before school start. METHODS AND RESULTS In total, 176 children aged 6 years and born extremely preterm (EXPT; gestational age of 22-26 weeks) and 134 children born at term (control [CTRL]) were studied. We used echocardiography to assess left heart dimensions, geometry, and functions. Recording and off-line analyses of echocardiographic images were performed by operators blinded to group belonging. Body size, blood pressure, and heart rate were also measured. Rates of family history of cardiovascular disease and sex distribution were similar in the EXPT and CTRL groups. Heart rate and systolic blood pressure did not differ, whereas diastolic blood pressure was slightly higher in EXPT than CTRL participants. After adjusting for body surface area, left ventricular length, width, and aortic valve annulus diameter were 3% to 5% smaller in EXPT than CTRL participants. Left ventricular longitudinal shortening and systolic tissue velocity were 7% to 11% lower, and transversal shortening fraction was 6% higher in EXPT than CTRL participants. The EXPT group also exhibited lower atrial emptying velocities than the CTRL group. Sex, fetal growth restriction, or a patent ductus arteriosus in the neonatal period did not contribute to cardiac dimensions or performance. CONCLUSIONS Six-year-old children born extremely preterm exhibit a unique cardiac phenotype characterized by smaller left ventricles with altered systolic and diastolic functions than same-aged children born at term.
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Affiliation(s)
- Lilly-Ann Mohlkert
- Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Jenny Hallberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Olof Broberg
- Department of Clinical Sciences, Division of Paediatric Cardiology, Lund University, Lund, Sweden
- Paediatric Heart Center, Skåne University Hospital, Lund, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Paediatrics, Umeå University, Umeå, Sweden
| | - Cecilia Pegelow Halvorsen
- Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Petru Liuba
- Department of Clinical Sciences, Division of Paediatric Cardiology, Lund University, Lund, Sweden
- Paediatric Heart Center, Skåne University Hospital, Lund, Sweden
| | - Vineta Fellman
- Children's Hospital, University of Helsinki, Helsinki, Finland
- Department of Clinical Sciences, Division of Paediatrics, Lund University Skåne University Hospital, Lund, Sweden
| | - Magnus Domellöf
- Department of Clinical Sciences, Paediatrics, Umeå University, Umeå, Sweden
| | - Gunnar Sjöberg
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Norman
- Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Neonatal Medicine, Karolinska University Hospital, Stockholm, Sweden
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Östman-Smith I, Sjöberg G, Rydberg A, Larsson P, Fernlund E. Predictors of risk for sudden death in childhood hypertrophic cardiomyopathy: the importance of the ECG risk score. Open Heart 2017; 4:e000658. [PMID: 29118996 PMCID: PMC5663271 DOI: 10.1136/openhrt-2017-000658] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/07/2017] [Accepted: 08/22/2017] [Indexed: 12/22/2022] Open
Abstract
Objective To establish which risk factors are predictive for sudden death in hypertrophic cardiomyopathy (HCM) diagnosed in childhood. Methods A Swedish national cohort of patients with HCM diagnosed <19 years of age was collected between 1972 and 2014, consisting of 155 patients with available ECGs, with average follow-up of 10.9±(SD 9.0) years, out of whom 32 had suffered sudden death or cardiac arrest (SD/CA group). Previously proposed risk factors and clinical features, ECG and ultrasound measures were compared between SD/CA group and patients surviving >2 years (n=100), and features significantly more common in SD/CA group were further analysed with univariate and multivariate Cox hazard regression in the total cohort. Results Ranked according to relative risk (RR) the ECG risk score >5 points had an RR of 46.5 (95% CI 6.6 to 331), sensitivity of 97% (83% to 100%) and specificity of 80% (71% to 88%) (p<0.0001), and was the best ECG predictor, predicting a 5-year risk of SD/CA of 30.6%. The following are other features with importantly raised RR: Detroit wall thickness Z-score >4.5: 9.9 (3.1 to 31.2); septal thickness ≥190% of upper limit of normal for age (septum in % of 95th centile for age (SEPPER) ≥190%): 7.9 (3.2 to 19.4); ventricular tachycardia: 9.1 (3.6 to 22.8); ventricular ectopics on exercise testing: 7.4 (2.7 to 20.2); and left ventricular outflow gradient (left ventricular outflow tract obstruction (LVOTO)) >50 mm Hg: 6.6 (4.0 to 11.0). Family history was non-significant. Multivariate Cox hazard analysis gives the following as early predictors: limb-lead QRS amplitude sum (p=0.020), SEPPER ≥190% (p<0.001) and LVOTO at rest (p=0.054); and for late predictors: last ECG risk score (p=0.002) and last Detroit Z-score (p=0.001). Both early (p=0.028) and late (p=0.037) beta-blocker doses reduced risk in the models. Conclusions ECG phenotype as assessed by ECG risk score is important for risk of sudden death and should be considered for inclusion in risk stratification of paediatric patients with HCM.
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Affiliation(s)
- Ingegerd Östman-Smith
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Gunnar Sjöberg
- Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Unit of Pediatrics, Umeå University, Umeå, Sweden
| | - Per Larsson
- Department of Pediatric Cardiology, Uppsala University Children's Hospital, Uppsala, Sweden
| | - Eva Fernlund
- Department of Pediatrics, Linköping University, Linköping, Sweden.,Pediatric Heart Center, Lund University, Lund, Sweden
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43
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Rydberg A, Ygge J, Olsson M. Ocular Motor Function in Children with Spastic Hemiplegia Evaluated by the Ocular Motor Score. Strabismus 2017; 25:156-159. [PMID: 28771056 DOI: 10.1080/09273972.2017.1350727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE To assess the ocular motor functions in children with spastic hemiplegia by using the Ocular Motor Score (OMS). MATERIAL This study included 34 children, median age 11 years. The children were divided into 3 groups according to the underlying brain lesion; group 1 malformations, group 2 white matter damage of immaturity (WMDI), and group 3 cortical/subcortical lesions. METHODS The OMS protocol consists of 15 different subtests evaluating ocular motor functions. The OMS is divided into 2 parts, a static and a dynamic. The results from each subtest are scored 0, 0.3, 0.5, or 1, according to the level of disturbance, where 0 corresponds to normal function and 1 represents the maximum disability in the certain subtest. A total OMS (tOMS) between 0 and 15 can be obtained. RESULTS The median tOMS in the whole spastic hemiplegia group was 2.5 (range 1.3-5.8). The highest median tOMS 5.2 was seen in group 1, in the children with malformations. Strabismus was found in 45% (15/34) of the children, with an equal percentage in all 3 groups. CONCLUSIONS The children with spastic hemiplegia had a median tOMS of 2.7 and the highest median tOMS was seen in children with malformations. The OMS protocol is easy to use clinically and gives a quick overview of the patient´s ocular motor functions.
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Affiliation(s)
- A Rydberg
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,c Astrid Lindgren Children's Hospital , Stockholm , Sweden
| | - J Ygge
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,b St. Erik Eye Hospital , Stockholm , Sweden
| | - M Olsson
- a Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.,b St. Erik Eye Hospital , Stockholm , Sweden
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44
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Acuna Mora M, Sparud-Lundin C, Burstrom A, Hanseus K, Rydberg A, Moons P, Bratt E. P1517Level of empowerment and its correlates in young persons with congenital heart disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M. Acuna Mora
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
| | - C. Sparud-Lundin
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
| | - A. Burstrom
- Karolinska Institute, Department for Women and Children's Health, Stockholm, Sweden
| | - K. Hanseus
- Skane University Hospital, Department of Pediatric Cardiology, Lund, Sweden
| | - A. Rydberg
- Umea University, Department of Clinical Sciences, Pediatrics, Umea, Sweden
| | - P. Moons
- KU Leuven, Department of Public Health and Primary Care, Leuven, Belgium
| | - E.L. Bratt
- Sahlgrenska Academy, Institute of Health and Care Sciences, Gothenburg, Sweden
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45
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Charisopoulou D, Koulaouzidis G, Rydberg A, Henein M. P6132Stress induced short left ventricular filling time compromises stroke volume: a potential contributor to symptoms in long QT syndrome carriers. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Winbo A, Stattin EL, Westin IM, Norberg A, Persson J, Jensen SM, Rydberg A. Sex is a moderator of the association between NOS1AP sequence variants and QTc in two long QT syndrome founder populations: a pedigree-based measured genotype association analysis. BMC Med Genet 2017; 18:74. [PMID: 28720088 PMCID: PMC5516337 DOI: 10.1186/s12881-017-0435-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 07/06/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND Sequence variants in the NOS1AP gene have repeatedly been reported to influence QTc, albeit with moderate effect sizes. In the long QT syndrome (LQTS), this may contribute to the substantial QTc variance seen among carriers of identical pathogenic sequence variants. Here we assess three non-coding NOS1AP sequence variants, chosen for their previously reported strong association with QTc in normal and LQTS populations, for association with QTc in two Swedish LQT1 founder populations. METHODS This study included 312 individuals (58% females) from two LQT1 founder populations, whereof 227 genotype positive segregating either Y111C (n = 148) or R518* (n = 79) pathogenic sequence variants in the KCNQ1 gene, and 85 genotype negatives. All were genotyped for NOS1AP sequence variants rs12143842, rs16847548 and rs4657139, and tested for association with QTc length (effect size presented as mean difference between derived and wildtype, in ms), using a pedigree-based measured genotype association analysis. Mean QTc was obtained by repeated manual measurement (preferably in lead II) by one observer using coded 50 mm/s standard 12-lead ECGs. RESULTS A substantial variance in mean QTc was seen in genotype positives 476 ± 36 ms (Y111C 483 ± 34 ms; R518* 462 ± 34 ms) and genotype negatives 433 ± 24 ms. Female sex was significantly associated with QTc prolongation in all genotype groups (p < 0.001). In a multivariable analysis including the entire study population and adjusted for KCNQ1 genotype, sex and age, NOS1AP sequence variants rs12143842 and rs16847548 (but not rs4657139) were significantly associated with QT prolongation, +18 ms (p = 0.0007) and +17 ms (p = 0.006), respectively. Significant sex-interactions were detected for both sequent variants (interaction term r = 0.892, p < 0.001 and r = 0.944, p < 0.001, respectively). Notably, across the genotype groups, when stratified by sex neither rs12143842 nor rs16847548 were significantly associated with QTc in females (both p = 0.16) while in males, a prolongation of +19 ms and +8 ms (p = 0.002 and p = 0.02) was seen in multivariable analysis, explaining up to 23% of QTc variance in all males. CONCLUSIONS Sex was identified as a moderator of the association between NOS1AP sequence variants and QTc in two LQT1 founder populations. This finding may contribute to QTc sex differences and affect the usefulness of NOS1AP as a marker for clinical risk stratification in LQTS.
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Affiliation(s)
- Annika Winbo
- Department of Clinical Sciences, Pediatrics, Umeå University, 90187, Umeå, Sweden. .,Department of Physiology, University of Auckland, Auckland, New Zealand.
| | - Eva-Lena Stattin
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ida Maria Westin
- Department of Medical Biosciences, Medical and Clinical Genetics, Umeå University, Umeå, 90185, Sweden
| | - Anna Norberg
- Department of Medical Biosciences, Medical and Clinical Genetics, Umeå University, Umeå, 90185, Sweden
| | - Johan Persson
- Department of Clinical Sciences, Pediatrics, Umeå University, 90187, Umeå, Sweden
| | - Steen M Jensen
- Department of Public Health and Clinical Medicine, Heart Centre, Umeå University, Umeå, 90185, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, 90187, Umeå, Sweden
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47
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Burström Å, Bratt EL, Frenckner B, Nisell M, Hanséus K, Rydberg A, Öjmyr-Joelsson M. Adolescents with congenital heart disease: their opinions about the preparation for transfer to adult care. Eur J Pediatr 2017; 176:881-889. [PMID: 28508990 PMCID: PMC5486562 DOI: 10.1007/s00431-017-2917-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 12/21/2016] [Accepted: 04/27/2017] [Indexed: 12/24/2022]
Abstract
UNLABELLED The aim of the study was to explore what adolescents with congenital heart disease (CHD) view as important in the preparation for the transfer to adult care. We performed interviews in four focus groups with adolescents (14-18 years old) at four university hospitals in Sweden. Data was analysed using qualitative content analysis. The analysis revealed one main category; Becoming a manager of the condition and four subcategories; Sufficient knowledge about the health, Be a participant in the care, Parental support, and Communicate with others about the health. The adolescents' ages differentiated the discussion in the groups. The older adolescents seemed to have more interest in transition planning, information and transfer. The younger described more frustrations about communication and handling the disease. CONCLUSION To become a manager of the CHD in daily life, the adolescents want disease specific knowledge, which should be communicated in a developmentally appropriate way. Adolescents want to participate and be involved in the transition process. They need support and guidance in how to communicate their CHD. Parental support is fundamental but it change over time. Moreover, peer-support is becoming more significant during the transition process. What is Known: • Transition during adolescence and transfer to adult care for adolescents with CHD is complex, and there is a shift in roles. • Adolescents often have poor knowledge and understanding about their heart condition and the consequences. What is New: • Adolescents call for disease specific information regarding health issues of importance for them in daily life. • Communicating the disease with other is a challenge- peer support from other adolescents with CHD could be a facilitator.
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Affiliation(s)
- Åsa Burström
- Institution for Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden. .,Department of Paediatric Cardiology, Astrid Lindgren Children's Hospital, Stockholm, Sweden.
| | - Ewa-Lena Bratt
- Institution of Health and Care Sciences, University of Gothenburg, Gothenburg, Sweden ,Department of Pediatric Cardiology, The Queen Silvia Children’s Hospital, Gothenburg, Sweden
| | - Björn Frenckner
- Institution for Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden ,Department of Paediatric Cardiology, Astrid Lindgren Children’s Hospital, Stockholm, Sweden
| | - Margret Nisell
- Institution for Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden ,The Red Cross University College, Stockholm, Sweden
| | - Katarina Hanséus
- Department of Pediatric Cardiology, Skåne University Hospital, Lund, Sweden
| | - Annika Rydberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Maria Öjmyr-Joelsson
- Institution for Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden ,Department of Paediatric Cardiology, Astrid Lindgren Children’s Hospital, Stockholm, Sweden
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Sundström E, Jensen SM, Diamant UB, Rydberg A. Implantable cardioverter defibrillator treatment in long QT syndrome patients: a national study on adherence to international guidelines. SCAND CARDIOVASC J 2016; 51:88-94. [PMID: 27936942 DOI: 10.1080/14017431.2016.1270463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Implantable cardioverter defibrillator (ICD) treatment is effective among long QT syndrome (LQTS) patients at a high risk of sudden cardiac death. Previous studies show that the international guidelines are not always followed, and that risk stratification may be based on genotype rather than individual risk profile. We analysed data from the Swedish ICD & Pacemaker Registry and medical records to examine how international guidelines were followed with regards to phenotype and genotype. METHODS AND RESULTS ICD treatment was used in 150 Swedish LQTS patients from 1989-2013. The annual number of implantations increased over the study period. A total of 109 patients were included in the analysis. Most patients (91%) were symptomatic before the implantation. Seventy percent of patients who received ICD treatment met the 2006 Class I or Class IIa recommendations for LQTS treatment. Thirty-one percent of the LQT3 patients received ICD treatment despite being asymptomatic. Among LQT1 patients, 45% received ICD treatment after syncope despite beta-blockers. CONCLUSIONS Thirty percent of Swedish LQTS patients with ICD received the treatment without a strong indication based on international guidelines. LQT3 patients were over-represented among asymptomatic patients. Many LQT1 patients received ICD despite the known effect of beta-blockers in this group.
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Affiliation(s)
- Emilia Sundström
- a Department of Clinical Sciences, Paediatrics , Umeå University , Umeå , Sweden
| | - Steen M Jensen
- b Department of Public Health and Clinical Medicine , Heart Centre, Umeå University , Umeå , Sweden
| | - Ulla-Britt Diamant
- b Department of Public Health and Clinical Medicine , Heart Centre, Umeå University , Umeå , Sweden
| | - Annika Rydberg
- a Department of Clinical Sciences, Paediatrics , Umeå University , Umeå , Sweden
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Jashari H, Lannering K, Mellander M, Ibrahimi P, Rydberg A, Henein MY. Coarctation repair normalizes left ventricular function and aorto-septal angle in neonates. CONGENIT HEART DIS 2016; 12:218-225. [DOI: 10.1111/chd.12430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/06/2016] [Accepted: 10/21/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Haki Jashari
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
| | - Katarina Lannering
- Department of Pediatric Cardiology; Queen Silvia Children's Hospital, Sahlgrenska University Hospital; Göteborg Sweden
| | - Mats Mellander
- Department of Pediatric Cardiology; Queen Silvia Children's Hospital, Sahlgrenska University Hospital; Göteborg Sweden
| | - Pranvera Ibrahimi
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
| | - Annika Rydberg
- Department of Clinical Sciences; Umeå University; Umeå Sweden
| | - Michael Y. Henein
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
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50
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Mann SA, Imtiaz M, Winbo A, Rydberg A, Perry MD, Couderc JP, Polonsky B, McNitt S, Zareba W, Hill AP, Vandenberg JI. Convergence of models of human ventricular myocyte electrophysiology after global optimization to recapitulate clinical long QT phenotypes. J Mol Cell Cardiol 2016; 100:25-34. [DOI: 10.1016/j.yjmcc.2016.09.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/11/2016] [Accepted: 09/19/2016] [Indexed: 12/15/2022]
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