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Tang PC, Millar J, Noly PE, Sicim H, Likosky DS, Zhang M, Pagani FD. Preoperative passive venous pressure-driven cardiac function determines left ventricular assist device outcomes. J Thorac Cardiovasc Surg 2024; 168:133-144.e5. [PMID: 37495169 PMCID: PMC10805966 DOI: 10.1016/j.jtcvs.2023.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/22/2023] [Accepted: 07/16/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Right heart output in heart failure can be compensated through increasing systemic venous pressure. We determined whether the magnitude of this "passive cardiac output" can predict LVAD outcomes. METHODS This was a retrospective review of 383 patients who received a continuous-flow LVAD at the University of Michigan between 2012 and 2021. Pre-LVAD cardiac output driven by venous pressure was determined by dividing right atrial pressure by mean pulmonary artery pressure, multiplied by total cardiac output. Normalization to body surface area led to the passive cardiac index (PasCI). The Youden J statistic was used to identify the PasCI threshold, which predicted LVAD death by 2 years. RESULTS Increased preoperative PasCI was associated with reduced survival (hazard ratio [HR], 2.27; P < .01), and increased risk of right ventricular failure (RVF) (HR, 3.46; P = .04). Youden analysis showed that a preoperative PasCI ≥0.5 (n = 226) predicted LVAD death (P = .10). Patients with PasCI ≥0.5 had poorer survival (P = .02), with a trend toward more heart failure readmission days (mean, 45.09 ± 67.64 vs 35.13 ± 45.02 days; P = .084) and increased gastrointestinal bleeding (29.2% vs 20.4%; P = .052). Additionally, of the 97 patients who experienced readmissions for heart failure, those with pre-LVAD implantation PasCI ≥0.5 were more likely to have more than 1 readmission (P = .05). CONCLUSIONS Although right heart output can be augmented by raising venous pressure, this negatively impacts end-organ function and increases heart failure readmission days. Patients with a pre-LVAD PasCI ≥0.5 have worse post-LVAD survival and increased RVF. Using the PasCI metric in isolation or incorporated into a predictive model may improve the management of LVAD candidates with RV dysfunction.
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Affiliation(s)
- Paul C Tang
- Department of Cardiac Surgery, University of Michigan Frankel Cardiovascular Center, Ann Arbor, Mich; Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minn.
| | - Jessica Millar
- Department of Surgery, University of Michigan Ann Arbor, Mich
| | | | - Hüseyin Sicim
- Department of Cardiac Surgery, University of Michigan Frankel Cardiovascular Center, Ann Arbor, Mich
| | - Donald S Likosky
- Department of Cardiac Surgery, University of Michigan Frankel Cardiovascular Center, Ann Arbor, Mich
| | - Min Zhang
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, Mich
| | - Francis D Pagani
- Department of Cardiac Surgery, University of Michigan Frankel Cardiovascular Center, Ann Arbor, Mich
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Ohuchi H, Kawata M, Uemura H, Akagi T, Yao A, Senzaki H, Kasahara S, Ichikawa H, Motoki H, Syoda M, Sugiyama H, Tsutsui H, Inai K, Suzuki T, Sakamoto K, Tatebe S, Ishizu T, Shiina Y, Tateno S, Miyazaki A, Toh N, Sakamoto I, Izumi C, Mizuno Y, Kato A, Sagawa K, Ochiai R, Ichida F, Kimura T, Matsuda H, Niwa K. JCS 2022 Guideline on Management and Re-Interventional Therapy in Patients With Congenital Heart Disease Long-Term After Initial Repair. Circ J 2022; 86:1591-1690. [DOI: 10.1253/circj.cj-22-0134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hideo Ohuchi
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center
| | - Masaaki Kawata
- Division of Pediatric and Congenital Cardiovascular Surgery, Jichi Children’s Medical Center Tochigi
| | - Hideki Uemura
- Congenital Heart Disease Center, Nara Medical University
| | - Teiji Akagi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences
| | - Atsushi Yao
- Division for Health Service Promotion, University of Tokyo
| | - Hideaki Senzaki
- Department of Pediatrics, International University of Health and Welfare
| | - Shingo Kasahara
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences
| | - Hajime Ichikawa
- Department of Pediatric Cardiovascular Surgery, National Cerebral and Cardiovascular Center
| | - Hirohiko Motoki
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Morio Syoda
- Department of Cardiology, Tokyo Women’s Medical University
| | - Hisashi Sugiyama
- Department of Pediatric Cardiology, Seirei Hamamatsu General Hospital
| | - Hiroyuki Tsutsui
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences
| | - Kei Inai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women’s Medical University
| | - Takaaki Suzuki
- Department of Pediatric Cardiac Surgery, Saitama Medical University
| | | | - Syunsuke Tatebe
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
| | - Tomoko Ishizu
- Cardiovascular Division, Faculty of Medicine, University of Tsukuba
| | - Yumi Shiina
- Cardiovascular Center, St. Luke’s International Hospital
| | - Shigeru Tateno
- Department of Pediatrics, Chiba Kaihin Municipal Hospital
| | - Aya Miyazaki
- Division of Congenital Heart Disease, Department of Transition Medicine, Shizuoka General Hospital
| | - Norihisa Toh
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences
| | - Ichiro Sakamoto
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences
| | - Chisato Izumi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Yoshiko Mizuno
- Faculty of Nursing, Tokyo University of Information Sciences
| | - Atsuko Kato
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center
| | - Koichi Sagawa
- Department of Pediatric Cardiology, Fukuoka Children’s Hospital
| | - Ryota Ochiai
- Department of Adult Nursing, Yokohama City University
| | - Fukiko Ichida
- Department of Pediatrics, International University of Health and Welfare
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine
| | | | - Koichiro Niwa
- Department of Cardiology, St. Luke’s International Hospital
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Ritmeester E, Veger VA, van der Ven JPG, van Tussenbroek GMJW, van Capelle CI, Udink ten Cate FEA, Helbing WA. Fontan Circulation Associated Organ Abnormalities Beyond the Heart, Lungs, Liver, and Gut: A Systematic Review. Front Cardiovasc Med 2022; 9:826096. [PMID: 35391839 PMCID: PMC8981209 DOI: 10.3389/fcvm.2022.826096] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/17/2022] [Indexed: 12/22/2022] Open
Abstract
Introduction Patients with a Fontan circulation are at risk for sequelae of Fontan physiology during follow-up. Fontan physiology affects all organ systems and an overview of end-organ damage is needed. Methods We performed a systematic review of abnormalities in multiple organ systems for patients with a longstanding Fontan circulation. We searched online databases for articles describing abnormalities in multiple organ systems. Cardio-pulmonary abnormalities, protein losing enteropathy, and Fontan associated liver disease have already extensively been described and were excluded from this systematic review. Results Our search returned 5,704 unique articles. After screening, we found 111 articles relating to multiple organ systems. We found abnormalities in, among others, the nervous system, pituitary, kidneys, and musculoskeletal system. Pituitary edema—relating to the unique pituitary vasculature- may affect the thyroid axis. Renal dysfunction is common. Creatinine based renal function estimates may be inappropriate due to myopenia. Both lean muscle mass and bone mineral density are decreased. These abnormalities in multiple organ systems may be related to Fontan physiology, cyanosis, iatrogenic factors, or lifestyle. Conclusions Health care providers should be vigilant for hypothyroidism, visual or hearing deficits, and sleep disordered breathing in Fontan patients. We recommend including cystatin C for assessment of renal function. This review may aid health care providers and guide future research. Systematic Review Registration:https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021232461, PROSPERO, identifier: CRD42021232461.
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Affiliation(s)
- Evi Ritmeester
- Division of Pediatric Cardiology, Department of Pediatrics, Erasmus Medical Center Sophia Children's Hospital, Rotterdam, Netherlands
| | - Veerle A. Veger
- Division of Pediatric Cardiology, Department of Pediatrics, Erasmus Medical Center Sophia Children's Hospital, Rotterdam, Netherlands
| | - Jelle P. G. van der Ven
- Division of Pediatric Cardiology, Department of Pediatrics, Erasmus Medical Center Sophia Children's Hospital, Rotterdam, Netherlands
- Netherlands Heart Institute, Utrecht, Netherlands
| | | | - Carine I. van Capelle
- Department of Pediatrics, Erasmus Medical Center Sophia Children's Hospital, Rotterdam, Netherlands
| | - Floris E. A. Udink ten Cate
- Department of Pediatric Cardiology, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, Netherlands
| | - Willem A. Helbing
- Division of Pediatric Cardiology, Department of Pediatrics, Erasmus Medical Center Sophia Children's Hospital, Rotterdam, Netherlands
- Department of Pediatric Cardiology, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, Netherlands
- *Correspondence: Willem A. Helbing
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Inai K. Biomarkers for heart failure and prognostic prediction in patients with Fontan circulation. Pediatr Int 2022; 64:e14983. [PMID: 34480813 DOI: 10.1111/ped.14983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 08/10/2021] [Accepted: 09/02/2021] [Indexed: 01/06/2023]
Abstract
A wide variety of pathologies are involved in heart failure in patients with congenital heart disease (CHD). Specific causes of heart failure after the Fontan procedure include not only single-ventricle circulation, but also the function of the right ventricle as the systemic ventricle, atrioventricular or semilunar valve stenosis or regurgitation, pulmonary hypertension, and left ventricular dysfunction secondary to right ventricular enlargement or dysfunction. As heart failure can occur post-Fontan, for a variety of reasons, clarification of the pathophysiology is the first step in management and treatment. At the same time, it is important to understand each patient's current condition and treatment plan to make an accurate prognosis. Because of the wide variety of pathophysiologies in post-Fontan CHD patients, however, no single biomarker is useful in all situations. Relevant biomarkers must be selected according to each patient's disease state, and combinations of multiple biomarkers should also be considered. In this review, the author describes the clinical importance of various biomarkers for patients who have undergone a Fontan procedure.
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Affiliation(s)
- Kei Inai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Shinjuku-ku, Japan
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5
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Special situations in pheochromocytomas and paragangliomas: pregnancy, metastatic disease, and cyanotic congenital heart diseases. Clin Exp Med 2021; 22:359-370. [PMID: 34591219 DOI: 10.1007/s10238-021-00763-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 09/18/2021] [Indexed: 01/08/2023]
Abstract
The aim of our study was to describe the epidemiology, diagnosis, and treatment of the most complex pheochromocytoma and paraganglioma (PGL) cases, including pheochromocytoma/PGL during pregnancy, in cyanotic congenital heart diseases (CCHDs), and metastatic pheochromocytoma. The English and Spanish literature was thoroughly evaluated searching for articles reporting clinical studies, case reports, or reviews of pheochromocytoma/PGL in pregnancy and in CCHD and metastatic pheochromocytoma/PGL. Particular settings in the diagnosis and management of pheochromocytoma and PGLs remain challenging. Those special situations include the diagnosis during pregnancy or in the context of CCHD since the typical clinical features of pheochromocytoma may be confounded with preeclampsia during pregnancy and with the complications commonly observed in CCHD. In addition, although some clinical and genetic features have been associated with higher risk of metastatic pheochromocytoma, the detection and prediction of the development of metastatic disease involve another complex situation that may require special hormonal determinations as plasmatic 3-methoxytyramine and nuclear medicine studies including 18FDG PET-CT or 18F-FDOPA PET-CT, among others. Furthermore, the selection of the most appropriate treatment in these situations, as well as the moment to carry it out, requires special care as limited evidence is available. This article reviews the epidemiology, diagnosis, and treatment of the pheochromocytoma/PGL during pregnancy, metastatic pheochromocytoma/PGL, and pheochromocytoma/PGL in CCHD. The diagnosis, and especially the treatment, of metastatic pheochromocytomas and pheochromocytoma/PGL during pregnancy and in CCHD is challenging. Thus, these cases should be management in reference centres by multidisciplinary teams specialized in the pheochromocytoma/PGL treatment.
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6
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Wadey CA, Weston ME, Dorobantu DM, Pieles GE, Stuart G, Barker AR, Taylor RS, Williams CA. The role of cardiopulmonary exercise testing in predicting mortality and morbidity in people with congenital heart disease: a systematic review and meta-analysis. Eur J Prev Cardiol 2021; 29:513-533. [PMID: 34405863 DOI: 10.1093/eurjpc/zwab125] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/10/2021] [Indexed: 12/16/2022]
Abstract
AIMS The role of cardiopulmonary exercise testing (CPET) in predicting major adverse cardiovascular events (MACE) in people with congenital heart disease (ConHD) is unknown. A systematic review with meta-analysis was conducted to report the associations between CPET parameters and MACE in people with ConHD. METHODS AND RESULTS Electronic databases were systematically searched on 30 April 2020 for eligible publications. Two authors independently screened publications for inclusion, extracted study data, and performed risk of bias assessment. Primary meta-analysis pooled univariate hazard ratios across studies. A total of 34 studies (18 335 participants; 26.2 ± 10.1 years; 54% ± 16% male) were pooled into a meta-analysis. More than 20 different CPET prognostic factors were reported across 6 ConHD types. Of the 34 studies included in the meta-analysis, 10 (29%), 23 (68%), and 1 (3%) were judged as a low, medium, and high risk of bias, respectively. Primary univariate meta-analysis showed consistent evidence that improved peak and submaximal CPET measures are associated with a reduce risk of MACE. This association was supported by a secondary meta-analysis of multivariate estimates and individual studies that could not be numerically pooled. CONCLUSION Various maximal and submaximal CPET measures are prognostic of MACE across a variety of ConHD diagnoses. Further well-conducted prospective multicentre cohort studies are needed to confirm these findings.
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Affiliation(s)
- Curtis A Wadey
- Children's Health & Exercise Research Centre (CHERC), College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter EX1 2LU, UK
| | - Max E Weston
- Children's Health & Exercise Research Centre (CHERC), College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter EX1 2LU, UK.,School of Human Movement and Nutrition Sciences, Human Movement Studies Building, University of Queensland, QLD 4067, Brisbane, Australia
| | - Dan Mihai Dorobantu
- Children's Health & Exercise Research Centre (CHERC), College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter EX1 2LU, UK.,School of Population Health Sciences, University of Bristol, BS8 1QU, Bristol, UK
| | - Guido E Pieles
- National Institute for Health Research (NIHR) Cardiovascular Biomedical Research Centre, Bristol Heart Institute, Terrell St, BS2 8ED, Bristol, UK.,Bristol Congenital Heart Centre, The Bristol Heart Institute, University Hospitals Bristol NHS Foundation Trust, Upper Maudlin Street, BS2 8HW, Bristol, UK.,Institute of Sport Exercise and Health (ISEH), University College London, 170 Tottenham Court Rd, W1T 7HA, London, UK
| | - Graham Stuart
- National Institute for Health Research (NIHR) Cardiovascular Biomedical Research Centre, Bristol Heart Institute, Terrell St, BS2 8ED, Bristol, UK.,Bristol Congenital Heart Centre, The Bristol Heart Institute, University Hospitals Bristol NHS Foundation Trust, Upper Maudlin Street, BS2 8HW, Bristol, UK
| | - Alan R Barker
- Children's Health & Exercise Research Centre (CHERC), College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter EX1 2LU, UK
| | - Rod S Taylor
- MRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being, University of Glasgow, 99 Berkeley Street, G3 7HR, Glasgow, UK
| | - Craig A Williams
- Children's Health & Exercise Research Centre (CHERC), College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter EX1 2LU, UK
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7
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Mohanakumar S, Kelly B, Turquetto ALR, Alstrup M, Amato LP, Barnabe MSR, Silveira JBD, Amaral F, Manso PH, Jatene MB, Hjortdal VE. Functional lymphatic reserve capacity is depressed in patients with a Fontan circulation. Physiol Rep 2021; 9:e14862. [PMID: 34057301 PMCID: PMC8165731 DOI: 10.14814/phy2.14862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2021] [Indexed: 12/17/2022] Open
Abstract
Background Lymphatic abnormalities play a role in effusions in individuals with a Fontan circulation. Recent results using near‐infrared fluorescence imaging disclosed an increased contraction frequency of lymphatic vessels in Fontan patients compared to healthy controls. It is proposed that the elevated lymphatic pumping seen in the Fontan patients is necessary to maintain habitual interstitial fluid balance. Hyperthermia has previously been used as a tool for lymphatic stress test. By increasing fluid filtration in the capillary bed, the lymphatic workload and contraction frequency are increased accordingly. Using near‐infrared fluorescence imaging, the lymphatic functional reserve capacity in Fontan patients were explored with a lymphatic stress test. Methods Fontan patients (n = 33) were compared to a group of 15 healthy individuals of equal age, weight, and gender. The function of the superficial lymphatic vessels in the lower leg during rest and after inducing hyperthermia was investigated, using near‐infrared fluorescence imaging. Results Baseline values in the Fontan patients showed a 57% higher contraction frequency compared to the healthy controls (0.4 ± 0.3 min−1 vs. 0.3 ± 0.2 min−1, p = 0.0445). After inducing stress on the lymphatic vessels with hyperthermia the ability to increase contraction frequency was decreased in the Fontan patients compared to the controls (0.6 ± 0.5 min−1 vs. 1.2 ± 0.8 min−1, p = 0.0102). Conclusions Fontan patients had a higher lymphatic contraction frequency during normal circumstances. In the Fontan patients, the hyperthermia response is dampened indicating that the functional lymphatic reserve capacity is depressed. This diminished reserve capacity could be part of the explanation as to why some Fontan patients develop late‐onset lymphatic complications.
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Affiliation(s)
- Sheyanth Mohanakumar
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark.,Department of Radiology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Department of Cardiothoracic Surgery, Rigshospitalet, Copenhagen, Denmark
| | - Benjamin Kelly
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | - Mathias Alstrup
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | | | | | - Fernando Amaral
- Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.,Pediatric and Adult Congenital Heart Disease Unit, Hospital das Clínicas, Ribeirão Preto, Brazil
| | - Paulo Henrique Manso
- Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.,Pediatric and Adult Congenital Heart Disease Unit, Hospital das Clínicas, Ribeirão Preto, Brazil
| | | | - Vibeke Elisabeth Hjortdal
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Department of Cardiothoracic Surgery, Rigshospitalet, Copenhagen, Denmark
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Carvedilol Does Not Improve Exercise Performance in Fontan Patients: Results of a Crossover Trial. Pediatr Cardiol 2021; 42:934-941. [PMID: 33585998 DOI: 10.1007/s00246-021-02565-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Abstract
Increased circulating catecholamines are associated with worse exercise performance in adult heart failure patients. Patients with Fontan physiology have increased circulating catecholamines and theoretically could benefit from beta blockade. We hypothesized that carvedilol would improve exercise performance in Fontan patients. A double-blind, placebo-controlled, crossover trial of carvedilol was performed. Single ventricle patients between the ages of 10 and 35 years with a previous Fontan operation who were able to complete a maximal exercise test (respiratory exchange ratio > 1.0) were included. Two 12-week treatment arms were separated by a 6-week washout period. Exercise testing was performed at beginning and end of each treatment arm. Primary endpoint was improvement in peak oxygen consumption/kg (pVO2) from baseline. Of the 26 subjects enrolled, 23 completed the study. Four subjects did not reach goal maximum carvedilol dose, vs. 1 for placebo (p = 0.14). The mean change in pVO2 between treatments was not different (carvedilol = - 2.1 mL/kg/min v. placebo = - 1.42, p = 0.28). Carvedilol therapy decreased peak heart rate by 4.2 ± 20.2 bpm, (p < 0.01) leading to an increase in peak oxygen pulse (p < 0.01). Serum N-terminal-proBNP increased with carvedilol therapy (mean change of + 23.77 pg/mL) compared to placebo (mean change of - 5.37 pg/mL, p = 0.03). There were no serious adverse events related to study drug. Carvedilol was not associated with improved exercise performance and was associated with mildly increased N-terminal-proBNP. This study does not support the routine administration of carvedilol to healthy Fontan patients.Clinical Trials Registration ClinicalTrials.gov Identifier: NCT02946892. Registered October 27, 2016. Retrospectively Registered. https://clinicaltrials.gov/ct2/show/NCT02946892.
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9
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Turquetto ALR, Dos Santos MR, Agostinho DR, Sayegh ALC, de Souza FR, Amato LP, Barnabe MSR, de Oliveira PA, Liberato G, Binotto MA, Negrão CE, Canêo LF, Trindade E, Jatene FB, Jatene MB. Aerobic exercise and inspiratory muscle training increase functional capacity in patients with univentricular physiology after Fontan operation: A randomized controlled trial. Int J Cardiol 2021; 330:50-58. [PMID: 33571562 DOI: 10.1016/j.ijcard.2021.01.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 01/02/2021] [Accepted: 01/11/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The effect of exercise training and its mechanisms on the functional capacity improvement in Fontan patients (FP) are virtually unknown. This trial evaluated four-month aerobic exercise training and inspiratory muscle training on functional capacity, pulmonary function, and autonomic control in patients after Fontan operation. METHODS A randomized controlled clinical trial with 42 FP aged 12 to 30 years and, at least, five years of Fontan completion. Twenty-seven were referred to a four-months supervised and personalized aerobic exercise training (AET) or an inspiratory muscle training (IMT). A group of non-exercise (NET) was used as control. The effects of the exercise training in peak VO2; pulmonary volumes and capacities, maximal inspiratory pressure (MIP); muscle sympathetic nerve activity (MSNA); forearm blood flow (FBF); handgrip strength and cross-sectional area of the thigh were analyzed. RESULTS The AET decreased MSNA (p = 0.042), increased FBF (p = 0.012) and handgrip strength (p = 0.017). No significant changes in autonomic control were found in IMT and NET groups. Both AET and IMT increased peak VO2, but the increase was higher in the AET group compared to IMT (23% vs. 9%). No difference was found in the NET group. IMT group showed a 58% increase in MIP (p = 0.008) in forced vital capacity (p = 0.011) and forced expiratory volume in the first second (p = 0.011). No difference in pulmonary function was found in the AET group. CONCLUSIONS Both aerobic exercise and inspiratory muscle training improved functional capacity. The AET group developed autonomic control, and handgrip strength, and the IMT increased inspiratory muscle strength and spirometry. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02283255.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Gabriela Liberato
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Carlos Eduardo Negrão
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil; School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | | | - Evelinda Trindade
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
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10
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Asagai S, Inai K, Shimada E, Harada G, Sugiyama H. Clinical Significance of Central Venous Pressure During Exercise After Fontan Procedure. Pediatr Cardiol 2020; 41:251-257. [PMID: 31712861 DOI: 10.1007/s00246-019-02249-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/01/2019] [Indexed: 10/25/2022]
Abstract
Various late complications are associated with the Fontan procedure. In patients who undergo the Fontan procedure, the central venous pressure (CVP) tends to be higher than normal. However, the relationship between CVP (at rest and during exercise) and late complications associated with the Fontan procedure is unknown. Thirty-four patients who underwent the Fontan procedure were enrolled in this study. The median age was 19.3 years, and the median time after the Fontan procedure was 12.7 years. With exercise, the CVP increased from a median of 11 to 19 mmHg, and the cardiac index increased from a median of 2.1 to 4.4 l/min/m2. In 38% of the patients, CVP measured at the resting condition and during exercise differed. Laboratory results indicated no significant difference between the patients in the high-CVP group and low-CVP group at rest. In contrast, during exercise, brain natriuretic peptide (67 ± 38 vs. 147 ± 122 pg/ml, p < 0.05), gamma-glutamyl transpeptidase (63 ± 33 vs. 114 ± 30 IU/l, p < 0.05), type IV collagen 7S (6.7 ± 1.3 vs. 8.1 ± 1.3 ng/ml, p < 0.05), and creatinine (0.72 ± 3.14 vs. 0.83 ± 3.16 mg/dl, p < 0.05) levels were significantly higher in the high-CVP group than in the low-CVP group. Elevated CVP during exercise may be associated with long-term complications after the Fontan procedure; hence, CVP should be measured during exercise in patients who underwent the Fontan procedure to accurately predict the risk of developing such complications.
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Affiliation(s)
- Seiji Asagai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kei Inai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Tokyo, Japan. .,Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Kawada-cho 8-1, Shinjyuku-ku, Tokyo, 162-8666, Japan.
| | - Eriko Shimada
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Gen Harada
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Hisashi Sugiyama
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, Tokyo, Japan
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11
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Jeremiasen I, Tran-Lundmark K, Idris N, Tran PK, Moledina S. Pulmonary Vasodilator Therapy in Children with Single Ventricle Physiology: Effects on Saturation and Pulmonary Arterial Pressure. Pediatr Cardiol 2020; 41:1651-1659. [PMID: 32734529 PMCID: PMC7695650 DOI: 10.1007/s00246-020-02424-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/21/2020] [Indexed: 11/30/2022]
Abstract
In children with single ventricle physiology, increased pulmonary vascular resistance may impede surgical progression or result in failing single ventricle physiology. The use of pulmonary vasodilators has been suggested as a potential therapy. However, knowledge on indication, dosage, and effect is limited. A retrospective case notes review of all (n = 36) children with single ventricle physiology, treated with pulmonary vasodilators by the UK Pulmonary Hypertension Service for Children 2004-2017. Therapy was initiated in Stage 1 (n = 12), Glenn (n = 8), or TCPC (n = 16). Treatment indications were high mean pulmonary arterial pressure, cyanosis, reduced exercise tolerance, protein-losing enteropathy, ascites, or plastic bronchitis. Average dose of sildenafil was 2.0 mg/kg/day and bosentan was 3.3 mg/kg/day. 56% had combination therapy. Therapy was associated with a reduction of the mean pulmonary arterial pressure from 19 to 14 mmHg (n = 17, p < 0.01). Initial therapy with one or two vasodilators was associated with an increase in the mean saturation from 80 to 85%, (n = 16, p < 0.01). Adding a second vasodilator did not give significant additional effect. 5 of 12 patients progressed from Stage 1 to Glenn, Kawashima, or TCPC, and 2 of 8 from Glenn to TCPC during a mean follow-up time of 4.7 years (0-12.8). Bosentan was discontinued in 57% and sildenafil in 14% of treated patients and saturations remained stable. Pulmonary vasodilator therapy was well tolerated and associated with improvements in saturation and mean pulmonary arterial pressure in children with single ventricle physiology. It appears safe to discontinue when no clear benefit is observed.
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Affiliation(s)
- Ida Jeremiasen
- Department of Experimental Medical Science, Lund University, BMC C12, 221 84, Lund, Sweden. .,The Pediatric Heart Center, Skane University Hospital, Lund, Sweden.
| | - Karin Tran-Lundmark
- Department of Experimental Medical Science, Lund University, BMC C12, 221 84 Lund, Sweden ,The Pediatric Heart Center, Skane University Hospital, Lund, Sweden
| | - Nikmah Idris
- Great Ormond Street Hospital for Children, London, UK
| | - Phan-Kiet Tran
- The Pediatric Heart Center, Skane University Hospital, Lund, Sweden
| | - Shahin Moledina
- Great Ormond Street Hospital for Children, London, UK ,University College London, London, UK
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12
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Song MK, Kim GB, Bae EJ, Lee YA, Kim HY, Min SK, Kim JH, Won JK. Pheochromocytoma and paraganglioma in Fontan patients: Common more than expected. CONGENIT HEART DIS 2018; 13:608-616. [DOI: 10.1111/chd.12625] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/11/2018] [Accepted: 04/19/2018] [Indexed: 12/30/2022]
Affiliation(s)
- Mi Kyoung Song
- Department of Pediatrics; Seoul National University Children's Hospital; Seoul Republic of Korea
| | - Gi Beom Kim
- Department of Pediatrics; Seoul National University Children's Hospital; Seoul Republic of Korea
| | - Eun Jung Bae
- Department of Pediatrics; Seoul National University Children's Hospital; Seoul Republic of Korea
| | - Young Ah Lee
- Department of Pediatrics; Seoul National University Children's Hospital; Seoul Republic of Korea
| | - Hyun-Young Kim
- Department of Pediatric Surgery; Seoul National University College of Medicine; Seoul Republic of Korea
| | - Seung-Kee Min
- Department of Surgery; Seoul National University Hospital; Seoul Republic of Korea
| | - Jung Hee Kim
- Department of Internal Medicine; Seoul National University College of Medicine; Seoul Republic of Korea
| | - Jae-Kyung Won
- Department of Pathology; Seoul National University College of Medicine; Seoul Republic of Korea
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14
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Menon S, Chennapragada M, Ugaki S, Sholler GF, Ayer J, Winlaw DS. The Lymphatic Circulation in Adaptations to the Fontan Circulation. Pediatr Cardiol 2017; 38:886-892. [PMID: 28210768 DOI: 10.1007/s00246-017-1576-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/20/2017] [Indexed: 11/25/2022]
Abstract
Failing Fontan continues to be major problem for patients on the univentricular pathway. Failing Fontan is often complicated by chylothorax, plastic bronchitis and protein loosing enteropathy. The role of lymphatic circulation in Fontan circulation is still being researched. Newer imaging modalities give insight into the role of abnormal dilatation and retrograde flow in lymphatic channels post Fontan. Interventional strategies targeting abnormal lymphatic channels, provides an alternative management strategy for patients with failing Fontan. This review focuses on the role of lymphatic system in adaptations to Fontan circulation.
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Affiliation(s)
- Sabarinath Menon
- The Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Sree Chitra Tirunal Institute of Medical sciences and Technology, Thiruvananthapuram, Kerala, 695,011, India
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia
| | - Murthy Chennapragada
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Shinya Ugaki
- The Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia
| | - Gary F Sholler
- The Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Julian Ayer
- The Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - David S Winlaw
- The Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW, Australia.
- Sydney Children's Hospital Network, The Children's Hospital at Westmead, 212 Hawkesbury Road, Westmead, NSW, 2145, Australia.
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia.
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15
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Baggen VJ, van den Bosch AE, Eindhoven JA, Schut ARW, Cuypers JA, Witsenburg M, de Waart M, van Schaik RH, Zijlstra F, Boersma E, Roos-Hesselink JW. Prognostic Value of N-Terminal Pro-B-Type Natriuretic Peptide, Troponin-T, and Growth-Differentiation Factor 15 in Adult Congenital Heart Disease. Circulation 2017; 135:264-279. [DOI: 10.1161/circulationaha.116.023255] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 10/19/2016] [Indexed: 01/06/2023]
Abstract
Background:
The number of patients with adult congenital heart disease (ACHD) is rapidly increasing. To optimize patient management, there is a great need to accurately identify high-risk patients. Still, no biomarker has been firmly established as a clinically useful prognostic tool in this group. We studied the association of N-terminal pro-B-type natriuretic peptide (NT-proBNP), high-sensitive troponin-T, and growth-differentiation factor 15 with cardiovascular events in ACHD.
Methods:
Clinically stable patients with ACHD who routinely visited the outpatient clinic between April 2011 and April 2013 underwent clinical assessment, electrocardiography, echocardiography, and biomarker measurement (NT-proBNP, high-sensitive troponin-T, and growth-differentiation factor 15) at the time of study inclusion. Patients were prospectively followed for the occurrence of cardiovascular events (death, heart failure, hospitalization, arrhythmia, thromboembolic events, and reintervention). Survival curves were derived by the Kaplan-Meier method, and Cox regression was performed to investigate the relation between biomarkers and events with adjustment for multiple clinical and echocardiographic variables.
Results:
In total, 595 patients were included (median age, 33 years; interquartile range, 25–41 years; 58% male; 90% New York Heart Association class I). Patients were followed during a median of 42 (interquartile range, 37–46) months. Of the 3 evaluated biomarkers, NT-proBNP in the upper quartile (>33.3 pmol/L) was most strongly associated with cardiovascular events (n=165, adjusted hazard ratio, 9.05 [3.24–25.3],
P
<0.001) and with death or heart failure (n=50, adjusted hazard ratio, 16.0 [2.04–126],
P
<0.001). When NT-proBNP was analyzed as a continuous variable, similar findings were retrieved. The cumulative proportion of patients with death and heart failure was only 1% in the lowest 2 NT-proBNP quartiles. Elevated NT-proBNP (>14 pmol/L), elevated high-sensitive troponin-T (>14 ng/L), and elevated growth-differentiation factor 15 (>1109 ng/L) identified those patients at highest risk of cardiovascular events (log-rank
P
<0.0001).
Conclusions:
NT-proBNP provides prognostic information beyond a conventional risk marker model in patients with ACHD and can reliably exclude the risk of death and heart failure. Elevated levels of NT-proBNP, high-sensitive troponin-T, and growth-differentiation factor 15 identify patients at highest risk of cardiovascular events. These biomarkers therefore may play an important role in the monitoring and management of patients with ACHD.
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Affiliation(s)
- Vivan J.M. Baggen
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Annemien E. van den Bosch
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Jannet A. Eindhoven
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Anne-Rose W. Schut
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Judith A.A.E. Cuypers
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Maarten Witsenburg
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Monique de Waart
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Ron H.N. van Schaik
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Felix Zijlstra
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Eric Boersma
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
| | - Jolien W. Roos-Hesselink
- From Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands (V.J.M.B., A.E.v.d.B., J.A.E., A.-R.W.S., J.A.A.E.C., M.W., F.Z., E.B., J.W.R.-H.); Cardiovascular Research School COEUR, Rotterdam, the Netherlands (V.J.M.B., J.A.E., E.B.); Department of Clinical Chemistry, Erasmus Medical Center, Rotterdam, the Netherlands (M.d.W., R.H.N.v.S.); and Department of Clinical Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands (E.B.)
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16
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Abstract
BACKGROUND Limited data exist on the vitamin D status in Fontan patients. We determined the prevalence and potential risk factors of vitamin D deficiency in this patient subset. Methods and results Data were collected from 27 Fontan patients (55.6% male, mean age 8.1±5.3 years). Protein-losing enteropathy was diagnosed in six patients (22.2%). Vitamin D deficiency was defined as a serum 25-hydroxyvitamin D level of <20 ng/ml. The neutrophil-to-lymphocyte ratio, a marker of systemic inflammation, was calculated. Associations between laboratory measurements and patient characteristics were explored. Mean serum 25-hydroxyvitamin D level was 14.1±10.4 ng/ml. Vitamin D deficiency was found in 19/27 patients (70.3%). Only skin type was associated with vitamin D deficiency (p=0.04). Hyperparathyroidism was present in 5/21 (23.8%) patients, and was more prevalent in patients with protein-losing enteropathy (p<0.001). Parathyroid hormone levels correlated with parameters of systemic inflammation (neutrophil-to-lymphocyte ratio: r=0.484, p=0.026; relative lymphocyte count: r=-0.635, p=0.002). Vitamin D supplementation significantly increased serum 25-hydroxyvitamin D levels (p<0.0001), and was accompanied by a reduction in parathyroid hormone concentrations (p=0.032). CONCLUSIONS A high prevalence of vitamin D deficiency was found among Fontan patients, independent of age, time after Fontan procedure, ventricular morphology, and presence of protein-losing enteropathy. A potentially important link between parathyroid hormone levels and systemic inflammation is suggested.
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17
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Cedars AM, Saef J, Peterson LR, Coggan AR, Novak EL, Kemp D, Ludbrook PA. Effect of Ambrisentan on Exercise Capacity in Adult Patients After the Fontan Procedure. Am J Cardiol 2016; 117:1524-32. [PMID: 27063478 DOI: 10.1016/j.amjcard.2016.02.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/08/2016] [Accepted: 02/08/2016] [Indexed: 11/19/2022]
Abstract
The Fontan operation is a common end point for children born with a single functional ventricle. Fontan patients typically experience physiological deterioration leading to transplant or death in their third or fourth decades of life. This deterioration is partially attributable to progressive increases in pulmonary vascular resistance (PVR) and as such endothelin receptor antagonists, which are known to decrease pulmonary vascular resistance, have been proposed as potentially beneficial in this population. We conducted a single-center, randomized, double-blind, placebo-controlled, crossover study of 12 weeks of ambrisentan therapy (10 mg per day) versus placebo to test the hypothesis that endothelin receptor antagonism will improve cardiopulmonary exercise test parameters and 36-item short form (SF-36) assessed quality of life in adult Fontan patients. Twenty-eight patients entered the trial, 19 patients completed the protocol. Ambrisentan therapy improved peak oxygen consumption by 1.7 ml/kg/min in patients who achieved a respiratory exchange ratio of >0.95 (p = 0.05) and decreased the slope of the ventilatory equivalent ratio for oxygen (-2.8, p = 0.019) in all completers. It did not change SF-36 physical function score compared with placebo (p = 0.28). Ambrisentan therapy resulted in a decrease in (-1.4 g/dl, p <0.001) with no change in liver or renal function. Therapy was generally well tolerated, with no greater rate of side effects than placebo. In conclusion, ambrisentan is well tolerated and improves exercise capacity in adult Fontan patients.
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Affiliation(s)
- Ari M Cedars
- Department of Cardiology, Baylor University Hospital, Dallas, Texas.
| | - Joshua Saef
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | - Linda R Peterson
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | - Andrew R Coggan
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | - Eric L Novak
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | - Debra Kemp
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
| | - Philip A Ludbrook
- Department of Cardiology, Washington University School of Medicine, St. Louis, Missouri
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18
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Prognostic value of multiple biomarkers for cardiovascular mortality in adult congenital heart disease: comparisons of single-/two-ventricle physiology, and systemic morphologically right/left ventricles. Heart Vessels 2016; 31:1834-1847. [DOI: 10.1007/s00380-016-0807-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 01/29/2016] [Indexed: 10/22/2022]
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19
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Budts W, Roos-Hesselink J, Rädle-Hurst T, Eicken A, McDonagh TA, Lambrinou E, Crespo-Leiro MG, Walker F, Frogoudaki AA. Treatment of heart failure in adult congenital heart disease: a position paper of the Working Group of Grown-Up Congenital Heart Disease and the Heart Failure Association of the European Society of Cardiology. Eur Heart J 2016; 37:1419-27. [PMID: 26787434 DOI: 10.1093/eurheartj/ehv741] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 12/14/2015] [Indexed: 12/11/2022] Open
Affiliation(s)
- Werner Budts
- Congenital and Structural Cardiology, University Hospitals Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Jolien Roos-Hesselink
- Department of Cardiology, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Tanja Rädle-Hurst
- Department of Pediatric Cardiology, Saarland University Medical Center, Homburg, Germany
| | | | | | - Ekaterini Lambrinou
- Department of Nursing, School of Health Sciences Cyprus University of Technology, Limassol, Cyprus
| | - Maria G Crespo-Leiro
- Advanced Heart Failure and Heart Transplantation Unit, Cardiology Service, Hospital Universitario A Coruña, La Coruña, Spain
| | - Fiona Walker
- Centre for Grown-Up Congenital Heart Disease, St Bartholomews Hospital, London, UK
| | - Alexandra A Frogoudaki
- Adult Congenital Heart Clinic, Second Cardiology Department, ATTIKON University Hospital and Athens University, Athens, Greece
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20
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Opotowsky AR, Baraona F, Owumi J, Loukas B, Singh MN, Valente AM, Wu F, Cheng S, Veldtman G, Rimm EB, Landzberg MJ. Galectin-3 Is Elevated and Associated With Adverse Outcomes in Patients With Single-Ventricle Fontan Circulation. J Am Heart Assoc 2016; 5:e002706. [PMID: 26755550 PMCID: PMC4859390 DOI: 10.1161/jaha.115.002706] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 11/04/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Galectin-3 may play a role in cardiac and noncardiac fibrosis, and elevated circulating levels of this protein predict adverse outcomes in patients with heart failure who do not have congenital heart disease. We investigated galectin-3 in adults with single-ventricle Fontan circulation, patients who are prone to premature clinical deterioration in the context of extensive multiorgan fibrosis. METHODS AND RESULTS We measured plasma galectin-3 concentrations in 70 ambulatory adult Fontan patients and 21 age- and sex-matched control participants. Galectin-3 level was significantly higher in the Fontan group (11.85 ng/mL, interquartile range 9.9 to 15.0 ng/mL) versus the control group (9.4 ng/mL, interquartile range 8.2 to 10.8 ng/mL; P<0.001). Among Fontan patients, galectin-3 was positively correlated with age, uric acid, and high-sensitivity C-reactive protein and negatively correlated with estimated glomerular filtration rate. There was no significant relationship between galectin-3 and oxygen saturation, Fontan type, or ventricular morphology. Over a median follow-up of 461 days, 15 events occurred among the Fontan patients: 12 nonelective hospitalizations (with 2 subsequent deaths) and 3 deaths without prior hospitalization. Patients with elevated galectin-3 (n=19, defined as >2 SD above the control group mean value) had a higher risk of nonelective hospitalization or death (hazard ratio 6.0, 95% CI 2.1 to 16.8, P<0.001). This relationship persisted after individual adjustment for covariates including age, New York Heart Association functional class, C-reactive protein, and estimated glomerular filtration rate and after multivariable adjustment for independently predictive covariates (hazard ratio 9.2, 95% CI 2.4 to 35.2, P=0.001). CONCLUSIONS Galectin-3 concentrations are elevated among adults with a Fontan circulation, and elevated galectin-3 is associated with an increased risk of nonelective cardiovascular hospitalization or death.
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Affiliation(s)
- Alexander R. Opotowsky
- Department of MedicineBrigham and Women's HospitalBostonMA
- Department of CardiologyBoston Children's HospitalBostonMA
| | - Fernando Baraona
- División de Enfermedades CardiovascularesFacultad de MedicinaPontificia Universidad Católica de ChileSantiagoChile
| | - Justin Owumi
- Department of CardiologyBoston Children's HospitalBostonMA
| | | | - Michael N. Singh
- Department of MedicineBrigham and Women's HospitalBostonMA
- Department of CardiologyBoston Children's HospitalBostonMA
| | - Anne Marie Valente
- Department of MedicineBrigham and Women's HospitalBostonMA
- Department of CardiologyBoston Children's HospitalBostonMA
| | - Fred Wu
- Department of MedicineBrigham and Women's HospitalBostonMA
- Department of CardiologyBoston Children's HospitalBostonMA
| | - Susan Cheng
- Department of MedicineBrigham and Women's HospitalBostonMA
- Framingham Heart StudyFraminghamMA
| | | | - Eric B. Rimm
- Channing Division of Network MedicineBrigham and Women's HospitalBostonMA
- Departments of Nutrition and EpidemiologyHarvard School of Public HealthBostonMA
| | - Michael J. Landzberg
- Department of MedicineBrigham and Women's HospitalBostonMA
- Department of CardiologyBoston Children's HospitalBostonMA
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21
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Abstract
Interest in brain natriuretic peptide (BNP) and N-terminal pro-brain natriuretic peptide (NT-proBNP) in the management of children with CHD has increased. There are, however, no current guidelines for their routine use. The aim of this review article is to provide an update on the data regarding the use of BNP/NT-proBNP in the evaluation and surgical treatment of children with CHD. BNP/NT-proBNP levels in children with CHD vary substantially according to age, laboratory assay methods, and the specific haemodynamics associated with the individual congenital heart lesion. The accuracy of BNP/NT-proBNP as supplemental markers in the integrated screening, diagnosis, management, and follow-up of CHD has been established. In particular, the use of BNP/NT-proBNP as a prognostic indicator in paediatric cardiac surgery has been widely demonstrated, as well as its role in the subsequent follow-up of surgical patients. Most of the data, however, are derived from single-centre retrospective studies using multivariable analysis; prospective, randomised clinical trials designed to evaluate the clinical utility and cost-effectiveness of routine BNP/NT-proBNP use in CHD are lacking. The results of well-designed, prospective clinical trials should assist in formulating guidelines and expert consensus recommendations for its use in patients with CHD. Finally, the use of new point-of-care testing methods that use less invasive sampling techniques - capillary blood specimens - may contribute to a more widespread use of the BNP assay, especially in neonates and infants, as well as contribute to the development of screening programmes for CHD using this biomarker.
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22
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Abstract
The population of adults with congenital heart disease (CHD) now exceeds the population of children with CHD. The long-term management of these patients relies on sequential assessment of anatomy and physiology and integration with symptoms, all targeted toward decision making around intervention. The advances in technology have vastly improved our assessment of anatomy and function. However, while the assessment of chronic heart failure in acquired heart disease has been revolutionized by the proven utility of cardiac biomarkers, their use in adult CHD is still being assessed.
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Affiliation(s)
- Richard Dobson
- Scottish Adult Congenital Cardiac Service, West of Scotland Heart & Lung Centre, Golden Jubilee National Hospital, Clydebank, G81 4DY, UK
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Amino terminal fragment of pro-B-type natriuretic peptide for complex congenital heart diseases: one for all, all for one? J Am Coll Cardiol 2014; 63:1342-1343. [PMID: 24412449 DOI: 10.1016/j.jacc.2013.10.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 10/22/2013] [Indexed: 11/21/2022]
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Beyond a broken heart: circulatory dysfunction in the failing Fontan. Pediatr Cardiol 2014; 35:569-79. [PMID: 24531876 DOI: 10.1007/s00246-014-0881-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 02/05/2014] [Indexed: 02/07/2023]
Abstract
The role of ventricular dysfunction in late morbidity and mortality of univentricular hearts has been described previously. However, a significant proportion of adult Fontan patients who die or require heart transplantation do so with preserved ventricular function. The clinical deterioration in patients who have undergone Fontan palliation requires a broader view of circulatory dysfunction, one that takes into account the complex interaction of regulatory systems affecting hepatic, renal, and pulmonary blood flow, in addition to cardiac function. This review focuses primarily on the pathophysiology of multiple organ involvement in this circulatory dysfunction, with particular focus on the consequences of hepatic dysfunction and portal hypertension. The authors discuss hepatic perfusion, both in health and disease, and review the current understanding of liver histopathology and liver disease in adult Fontan patients and similar clinicopathologic states. They compare and contrast features of postsinusoidal portal hypertension with more typical adult cirrhotic disease. Finally, they delineate the related effects of portal hypertensive physiology on the systemic and pulmonary vasculature, the kidney, and the heart itself and discuss how these changes affect the care of the adult Fontan patient.
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Ohuchi H, Yasuda K, Miyazaki A, Iwasa T, Sakaguchi H, Shin O, Mizuno M, Negishi J, Noritake K, Yamada O. Comparison of prognostic variables in children and adults with Fontan circulation. Int J Cardiol 2014; 173:277-83. [PMID: 24650660 DOI: 10.1016/j.ijcard.2014.03.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 02/01/2014] [Accepted: 03/02/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Non-cardiac complications, such as hepato-renal and metabolic problems, are emerging late after the Fontan operation due to its unique hemodynamics. Consequently, associations between clinical variables and postoperative outcome may change during the prolonged postoperative course. METHODS AND RESULTS To determine if child and adult Fontan patients differ in the impact of cardiac and non-cardiac variables on clinical outcome, we prospectively evaluated associations between hemodynamics, neurohumoral factors, exercise variables, hepato-renal function and metabolic variables and unscheduled hospitalization, including death in 167 consecutive child and 116 adult Fontan patients. When compared with child patients, the adult patients showed higher rates of medications, lower cardiac index, higher values of natriuretic peptides, greater renal dysfunction, more cholestatic livers, and more impaired responses to exercise (p<0.05-0.0001). During the follow-up of 3.7 ± 2.1 years, 64 clinical events (37 in adults), including 13 deaths, occurred. A high CVP and low arterial oxygen satutration strongly predicted the child events (p<0.001), whereas these prognostic parameters were marginal in the adults. Instead, renal dysfunction and metabolic abnormality predicted adult events (p<0.05). Neurohumoral activation, low albumin, hyponatremia, and impaired exercise variables equally predicted clinical events in child and adult Fontan patients. CONCLUSIONS Distinctive differences in predictive value of clinical variables exist between child and adult Fontan patients. In addition to cardiac issues, we should consider non-cardiac determinents of clinical outcome to maximize our efforts to improve prognosis for adult Fontan survivors.
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Affiliation(s)
- Hideo Ohuchi
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan.
| | - Kenji Yasuda
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Aya Miyazaki
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Toru Iwasa
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Heima Sakaguchi
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Ono Shin
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Masanori Mizuno
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Jun Negishi
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Kanae Noritake
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
| | - Osamu Yamada
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1, Fujishiro-dai, Suita, Osaka 565-8565, Japan
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Cantinotti M, Law Y, Vittorini S, Crocetti M, Marco M, Murzi B, Clerico A. The potential and limitations of plasma BNP measurement in the diagnosis, prognosis, and management of children with heart failure due to congenital cardiac disease: an update. Heart Fail Rev 2014; 19:727-42. [DOI: 10.1007/s10741-014-9422-2] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Schuuring MJ, Vis JC, van Dijk AP, van Melle JP, Vliegen HW, Pieper PG, Sieswerda GT, de Bruin-Bon RH, Mulder BJ, Bouma BJ. Impact of bosentan on exercise capacity in adults after the Fontan procedure: a randomized controlled trial. Eur J Heart Fail 2014; 15:690-8. [DOI: 10.1093/eurjhf/hft017] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mark J. Schuuring
- Department of Cardiology; Academic Medical Centre; Meibergdreef 9 1105 AZ Amsterdam The Netherlands
- Interuniversity Cardiology Institute of the Netherlands; Utrecht The Netherlands
| | - Jeroen C. Vis
- Department of Cardiology; Academic Medical Centre; Meibergdreef 9 1105 AZ Amsterdam The Netherlands
| | - Arie P.J. van Dijk
- Department of Cardiology; University Nijmegen Medical Centre; Nijmegen The Netherlands
| | - Joost P. van Melle
- Department of Cardiology; University Medical Centre Groningen; Groningen The Netherlands
| | - Hubert W. Vliegen
- Department of Cardiology; Leiden University Medical Centre; Leiden The Netherlands
| | - Petronella G. Pieper
- Department of Cardiology; University Medical Centre Groningen; Groningen The Netherlands
| | - Gertjan T. Sieswerda
- Department of Cardiology; University Medical Centre Utrecht; Utrecht The Netherlands
| | | | - Barbara J.M. Mulder
- Department of Cardiology; Academic Medical Centre; Meibergdreef 9 1105 AZ Amsterdam The Netherlands
- Interuniversity Cardiology Institute of the Netherlands; Utrecht The Netherlands
| | - Berto J. Bouma
- Department of Cardiology; Academic Medical Centre; Meibergdreef 9 1105 AZ Amsterdam The Netherlands
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Le Gloan L, Mercier LA, Dore A, Marcotte F, Mongeon FP, Ibrahim R, Asgar A, Poirier N, Khairy P. Pregnancy in women with Fontan physiology. Expert Rev Cardiovasc Ther 2014; 9:1547-56. [DOI: 10.1586/erc.11.158] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Cotts T, Khairy P, Opotowsky AR, John AS, Valente AM, Zaidi AN, Cook SC, Aboulhosn J, Ting JG, Gurvitz M, Landzberg MJ, Verstappen A, Kay J, Earing M, Franklin W, Kogon B, Broberg CS. Clinical research priorities in adult congenital heart disease. Int J Cardiol 2013; 171:351-60. [PMID: 24411207 DOI: 10.1016/j.ijcard.2013.12.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 12/14/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Adult congenital heart disease (ACHD) clinicians are hampered by the paucity of data to inform clinical decision-making. The objective of this study was to identify priorities for clinical research in ACHD. METHODS A list of 45 research questions was developed by the Alliance for Adult Research in Congenital Cardiology (AARCC), compiled into a survey, and administered to ACHD providers. Patient input was sought via the Adult Congenital Heart Association at community meetings and online forums. The 25 top questions were sent to ACHD providers worldwide via an online survey. Each question was ranked based on perceived priority and weighted based on time spent in ACHD care. The top 10 topics identified are presented and discussed. RESULTS The final online survey yielded 139 responses. Top priority questions related to tetralogy of Fallot (timing of pulmonary valve replacement and criteria for primary prevention ICDs), patients with systemic right ventricles (determining the optimal echocardiographic techniques for measuring right ventricular function, and indications for tricuspid valve replacement and primary prevention ICDs), and single ventricle/Fontan patients (role of pulmonary vasodilators, optimal anticoagulation, medical therapy for preservation of ventricular function, treatment for protein losing enteropathy). In addition, establishing criteria to refer ACHD patients for cardiac transplantation was deemed a priority. CONCLUSIONS The ACHD field is in need of prospective research to address fundamental clinical questions. It is hoped that this methodical consultation process will inform researchers and funding organizations about clinical research topics deemed to be of high priority.
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Affiliation(s)
- Timothy Cotts
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States; Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, United States.
| | - Paul Khairy
- Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Alexander R Opotowsky
- Boston Children's Hospital, Department of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Anitha S John
- Division of Cardiology, Children's National Medical Center, Washington, D.C., United States
| | - Anne Marie Valente
- Boston Children's Hospital, Department of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Ali N Zaidi
- Columbus Ohio Adult Congenital Heart Disease Program, The Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, OH, United States; Department of Pediatrics, The Ohio State University, Columbus, OH, United States; Department of Internal Medicine, The Ohio State University, Columbus, OH, United States
| | - Stephen C Cook
- Department of Pediatrics, Heart Institute, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, United States
| | - Jamil Aboulhosn
- Department of Internal Medicine, University of California, Los Angeles, CA, United States
| | - Jennifer Grando Ting
- Heart & Vascular Institute, Hershey Medical Center, Pennsylvania State University, Hershey, PA, United States
| | - Michelle Gurvitz
- Boston Children's Hospital, Department of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Michael J Landzberg
- Boston Children's Hospital, Department of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Amy Verstappen
- Adult Congenital Heart Association, Philadelphia, PA, United States
| | - Joseph Kay
- Department of Internal Medicine, University of Colorado, Denver, United States; Department of Pediatrics, University of Colorado, Denver, United States
| | - Michael Earing
- Department of Internal Medicine, Medical College of Wisconsin, Milwaukee, WI, United States; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Wayne Franklin
- Department of Medicine, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States; Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, United States
| | - Brian Kogon
- Division of Cardiothoracic Surgery, Emory University, Atlanta, GA, United States
| | - Craig S Broberg
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, United States
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Lambert E, d'Udekem Y, Cheung M, Sari CI, Inman J, Ahimastos A, Eikelis N, Pathak A, King I, Grigg L, Schlaich M, Lambert G. Sympathetic and vascular dysfunction in adult patients with Fontan circulation. Int J Cardiol 2013; 167:1333-8. [DOI: 10.1016/j.ijcard.2012.04.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 04/01/2012] [Indexed: 01/21/2023]
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Maron BA, Opotowsky AR, Landzberg MJ, Loscalzo J, Waxman AB, Leopold JA. Plasma aldosterone levels are elevated in patients with pulmonary arterial hypertension in the absence of left ventricular heart failure: a pilot study. Eur J Heart Fail 2013; 15:277-83. [PMID: 23111998 PMCID: PMC3576899 DOI: 10.1093/eurjhf/hfs173] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 09/07/2012] [Accepted: 09/14/2012] [Indexed: 02/06/2023] Open
Abstract
AIMS Elevated levels of the mineralocorticoid hormone aldosterone are recognized as a modifiable contributor to the pathophysiology of select cardiovascular diseases due to left heart failure. In pulmonary arterial hypertension (PAH), pulmonary vascular remodelling induces right ventricular dysfunction and heart failure in the absence of left ventricular (LV) dysfunction. Hyperaldosteronism has emerged as a promoter of pulmonary vascular disease in experimental animal models of PAH; however, the extent to which hyperaldosteronism is associated with PAH in patients is unknown. Thus, the central aim of the current study is to determine if hyperaldosteronism is an unrecognized component of the PAH clinical syndrome. METHODS AND RESULTS Plasma aldosterone levels and invasive cardiopulmonary haemodynamic measurements were obtained for 25 patients referred for evaluation of unexplained dyspnoea or pulmonary hypertension. Compared with controls (n = 5), patients with PAH (n = 18) demonstrated significantly increased plasma aldosterone levels (1200.4 ± 423.9 vs. 5959.1 ± 2817.9 pg/mL, P < 0.02), mean pulmonary artery pressure (21.4 ± 5.0 vs. 45.5 ± 10.4 mmHg, P < 0.002), and pulmonary vascular resistance (PVR) (1.41 ± 0.6 vs. 7.3 ± 3.8 Wood units, P < 0.003) without differences in LV ejection fraction or pulmonary capillary wedge pressure between groups. Among patients not prescribed PAH-specific pharmacotherapy prior to cardiac catheterization, a subgroup of the cohort with severe pulmonary hypertension, aldosterone levels correlated positively with PVR (r = 0.72, P < 0.02) and transpulmonary gradient (r = 0.69, P < 0.02), but correlated inversely with cardiac output (r = -0.79, P < 0.005). CONCLUSIONS These data demonstrate a novel cardiopulmonary haemodynamic profile associated with hyperaldosteronism in patients: diminished cardiac output due to pulmonary vascular disease in the absence of LV heart failure.
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Affiliation(s)
- Bradley A Maron
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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Eindhoven JA, van den Bosch AE, Jansen PR, Boersma E, Roos-Hesselink JW. The Usefulness of Brain Natriuretic Peptide in Complex Congenital Heart Disease. J Am Coll Cardiol 2012; 60:2140-9. [DOI: 10.1016/j.jacc.2012.02.092] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 01/17/2012] [Accepted: 02/07/2012] [Indexed: 11/16/2022]
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Schuuring MJ, Boekholdt SM, Windhausen A, Bouma BJ, Groenink M, Keijzers M, De Winter RJ, Koolbergen DR, Blom NA, Mulder BJM. Advanced therapy for pulmonary arterial hypertension due to congenital heart disease: a clinical perspective in a new therapeutic era. Neth Heart J 2011; 19:509-13. [PMID: 22086272 PMCID: PMC3221753 DOI: 10.1007/s12471-011-0218-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- M J Schuuring
- Department of Cardiology, Academic Medical Center, PO Box 22660, 1100 DD, Amsterdam, the Netherlands
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Schuuring MJ, Vis JC, Bouma BJ, van Dijk AP, van Melle JP, Pieper PG, Vliegen HW, Sieswerda GT, Mulder BJ. Rationale and design of a trial on the role of bosentan in Fontan patients: Improvement of exercise capacity? Contemp Clin Trials 2011; 32:586-91. [DOI: 10.1016/j.cct.2011.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 03/16/2011] [Accepted: 04/04/2011] [Indexed: 10/18/2022]
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Szymański P, Klisiewicz A, Lubiszewska B, Lipczyńska M, Kowalski M, Janas J, Hoffman P. Gender differences in angiotensin II and aldosterone secretion in patients with pressure overloaded systemic right ventricles are similar to those observed in systemic arterial hypertension. Int J Cardiol 2011; 147:366-70. [DOI: 10.1016/j.ijcard.2009.09.535] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 08/24/2009] [Accepted: 09/25/2009] [Indexed: 11/25/2022]
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Ventricular Performance in Long-Term Survivors After Fontan Operation. Ann Thorac Surg 2011; 91:172-80. [DOI: 10.1016/j.athoracsur.2010.07.055] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 07/12/2010] [Accepted: 07/14/2010] [Indexed: 11/19/2022]
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Mechanisms of systemic adaptation to univentricular Fontan conversion. J Thorac Cardiovasc Surg 2010; 140:850-6, 856.e1-6. [PMID: 20483432 DOI: 10.1016/j.jtcvs.2010.04.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 02/05/2010] [Accepted: 04/10/2010] [Indexed: 11/23/2022]
Abstract
OBJECTIVE After univentricular Fontan conversion, systemic venous pressure serves as the sole driving force for transpulmonary blood flow. Consequently, systemic venous return is markedly altered and ventricular filling is subnormal. The mechanisms and time course of systemic adaptation to Fontan conversion are incompletely understood. We hypothesized that acute elevation in systemic venous pressure induces an adaptive response similar to conversion to a univentricular Fontan circulation. METHODS Adjustable vessel occluders were placed around the superior and inferior vena cavae in juvenile sheep. After 1-week recovery, occluders were tightened to acutely increase and maintain systemic venous pressure at 15 mm Hg (n = 6), simulating 1-stage Fontan conversion. Control animals (n = 4) received identical surgery, but venous pressure was not manipulated. RESULTS Cardiac index decreased significantly (3.9 ± 1.0 mL/min/m(2) to 2.7 ± 0.7 mL/min/m(2), P < .001) and then normalized to control at 2 weeks. Circulating blood volume increased (100 ± 9.4 mL/kg vs 85.5 ± 8.4 mL/kg, P = .034) as a persistent response. Cardiac reserve improved and was not different from control by week 3. Resting heart rate decreased in both groups. Oxygen extraction (arteriovenous oxygen difference) and neurohormonal mediators increased transiently and then normalized by week 2. CONCLUSIONS Adaptation to global elevation in systemic venous pressure to Fontan levels is complete within 2 weeks. Increased blood volume and reduced heart rate are persistent responses. Increased oxygen extraction and neurohormonal up-regulation are temporary responses that normalize with recovery of cardiac output. With improved physiologic understanding of systemic adaptation to Fontan conversion, approaches to single-ventricle palliation can be more objectively assessed and optimized.
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Silversides CK, Salehian O, Oechslin E, Schwerzmann M, Vonder Muhll I, Khairy P, Horlick E, Landzberg M, Meijboom F, Warnes C, Therrien J. Canadian Cardiovascular Society 2009 Consensus Conference on the management of adults with congenital heart disease: complex congenital cardiac lesions. Can J Cardiol 2010; 26:e98-117. [PMID: 20352139 DOI: 10.1016/s0828-282x(10)70356-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
With advances in pediatric cardiology and cardiac surgery, the population of adults with congenital heart disease (CHD) has increased. In the current era, there are more adults with CHD than children. This population has many unique issues and needs. They have distinctive forms of heart failure and their cardiac disease can be associated with pulmonary hypertension, thromboemboli, complex arrhythmias and sudden death. Medical aspects that need to be considered relate to the long-term and multisystemic effects of single ventricle physiology, cyanosis, systemic right ventricles, complex intracardiac baffles and failing subpulmonary right ventricles. Since the 2001 Canadian Cardiovascular Society Consensus Conference report on the management of adults with CHD, there have been significant advances in the field of adult CHD. Therefore, new clinical guidelines have been written by Canadian adult CHD physicians in collaboration with an international panel of experts in the field. Part III of the guidelines includes recommendations for the care of patients with complete transposition of the great arteries, congenitally corrected transposition of the great arteries, Fontan operations and single ventricles, Eisenmenger's syndrome, and cyanotic heart disease. Topics addressed include genetics, clinical outcomes, recommended diagnostic workup, surgical and interventional options, treatment of arrhythmias, assessment of pregnancy risk and follow-up requirements. The complete document consists of four manuscripts, which are published online in the present issue of The Canadian Journal of Cardiology. The complete document and references can also be found at www.ccs.ca or www.cachnet.org.
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Trojnarska O, Gwizdała A, Katarzyński S, Katarzyńska A, Oko-Sarnowska Z, Bręborowicz P, Grajek S. Evaluation of exercise capacity with cardiopulmonary exercise testing and BNP levels in adult patients with single or systemic right ventricles. Arch Med Sci 2010; 6:192-7. [PMID: 22371746 PMCID: PMC3281339 DOI: 10.5114/aoms.2010.13893] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 01/20/2009] [Accepted: 02/12/2009] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION The aim of the study was to evaluate exercise capacity using cardiopulmonary exercise test (CpET) and serum B-type natriuretic peptide (BNP) levels in patients with single or systemic right ventricles. MATERIAL AND METHODS The study group included 40 patients (16 males) - 17 with transposition of the great arteries after Senning operation, 13 with corrected transposition of the great arteries and 10 with single ventricle after Fontan operation, aged 19-55 years (mean 28.8 ±9.5 years). The control group included 22 healthy individuals (10 males) aged 23-49 years (mean 30.6 ±6.1 years). RESULTS The majority of patients reported good exercise tolerance - accordingly 27 were classified in NYHA class I (67.5%), 12 (30%) in class II, and only 1 (0.5%) in class III. Cardiopulmonary exercise test revealed significantly lower exercise capacity in study patients than in control subjects. In the study vs. control group VO(2max) was 21.7 ±5.9 vs. 34.2 ±7.4 ml/kg/min (p = 0.00001), maximum heart rate at peak exercise (HRmax) 152.5 ±32.3 vs. 187.2 ±15.6 bpm (p = 0.00001), VE/VCO(2) slope 34.8 ±7.1 vs. 25.7 ±3.2 (p = 0.00001), forced vital capacity (FVC) 3.7 ±0.9l vs. 4.6 ±0.3 (p = 0.03), forced expiratory volume in 1 s (FEV(1)) 3.0 ±0.7 vs. 3.7 ±0.9l (p = 0.0002) respectively. Serum BNP concentrations were higher in study patients than in control subjects; 71.8 ±74.4 vs. 10.7 ±8.1 (pg/ml) respectively (p = 0.00001). No significant correlations between BNP levels and CpET parameters were found. CONCLUSIONS Patients with a morphological right ventricle serving the systemic circulation and those with common ventricle physiology after Fontan operation show markedly reduced exercise capacity. They are also characterized by higher serum BNP concentrations, which do not however correlate with CpET parameters.
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Affiliation(s)
- Olga Trojnarska
- 1 Cardiology Department, University of Medical Sciences, Poznan, Poland
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d'Udekem Y, Cheung MMH, Setyapranata S, Iyengar AJ, Kelly P, Buckland N, Grigg LE, Weintraub RG, Vance A, Brizard CP, Penny DJ. How good is a good Fontan? Quality of life and exercise capacity of Fontans without arrhythmias. Ann Thorac Surg 2010; 88:1961-9. [PMID: 19932269 DOI: 10.1016/j.athoracsur.2009.07.079] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 07/29/2009] [Accepted: 07/31/2009] [Indexed: 11/15/2022]
Abstract
BACKGROUND Poor long-term outcomes are expected after Fontan surgery, but these perspectives have been tainted by the poorly functioning Fontans suffering from arrhythmias. No predictions of outcome can be quoted to the increasing number of Fontan patients free from arrhythmic complications. The parameters determining improved exercise capacity and quality of life in this subgroup are yet unknown. METHODS Fontan survivors from our institution and living in Victoria were invited to participate in the study if they were more than 10 years of age, and free of arrhythmias. A mean of 17 +/- 4 years after Fontan, 36 patients, 23 with a classical atriopulmonary connection (AP) and 13 with a lateral tunnel (LT) underwent transthoracic echocardiography, cycloergometer exercise study, neurohumoral screening, and assessment of quality of life. RESULTS The only factor predicting worse exercise capacity was the type of Fontan performed; patients with LT having better exercise capacity than those with AP (percentage of predicted anaerobic threshold: 88 +/- 14% vs 72 +/- 14%, p < 0.005; percentage of predicted VO(2)max: 62 +/- 8% vs 54 +/- 7%, p < 0.005). Endothelin-1 levels were elevated in all patients (2.9 pmol/L, 2.5 to 3.7). Responses from the quality of life measures placed our Fontan cohort mainly within the normal population range. None of the preoperative and postoperative variables adversely affected patients' quality of life. CONCLUSIONS The anaerobic threshold of arrhythmia-free Fontan patients operated with the lateral tunnel technique was relatively preserved. Despite restricted exercise capacity, Fontan patients, provided that they are free of arrhythmias, have a normal quality of life reflected in their reports of psychiatric symptoms and family relationships.
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Affiliation(s)
- Yves d'Udekem
- Department of Cardiac Surgery, Royal Children's Hospital, Parkville, Victoria, Australia.
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Gewillig M, Brown SC, Eyskens B, Heying R, Ganame J, Budts W, La Gerche A, Gorenflo M. The Fontan circulation: who controls cardiac output? Interact Cardiovasc Thorac Surg 2009; 10:428-33. [PMID: 19995891 DOI: 10.1510/icvts.2009.218594] [Citation(s) in RCA: 193] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In a Fontan circuit the mechanisms involved in control of cardiac output at rest and during exercise differ significantly from normal. The classical model presumes an unlimited preload which is not available in the Fontan circuit. This review critically analyses the role of contractility, heart rate, and afterload and highlights the importance of pulmonary vascular resistance (PVR) in determining adequate preload and, therefore, cardiac output in these patients. A conceptual model of the determinants of cardiac output in Fontan patients is presented.
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Affiliation(s)
- Marc Gewillig
- Paediatric and Congenital Cardiology, University Hospitals Leuven, Belgium.
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Prevalence and determinants of anemia in adults with complex congenital heart disease and ventricular dysfunction (subaortic right ventricle and single ventricle physiology). Am J Cardiol 2008; 102:625-8. [PMID: 18721525 DOI: 10.1016/j.amjcard.2008.04.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 04/04/2008] [Accepted: 04/04/2008] [Indexed: 10/21/2022]
Abstract
Anemia is well recognized as a marker of poor prognosis in patients with acquired heart disease and heart failure. Adults with complex congenital heart disease and ventricular dysfunction (subaortic right ventricle or single-ventricle physiology) represent a different population, because they are typically much younger and have less co-morbidity compared with patients with acquired forms of heart disease. The purpose of this study was to evaluate the prevalence and determinants of anemia in this population. Baseline hemoglobin levels were recorded at the time of the initial clinic visit, and final hemoglobin levels were those recorded before death or transplantation or at study completion. Anemia was defined as hemoglobin <135 g/L in men and <120 g/L in women. One hundred sixty-seven patients (100 men, mean age 34 +/- 8 years, mean ejection fraction 35 +/- 9%) were included, 66 with atrial switch operations, 42 with congenitally corrected transposition of the great arteries, and 59 with Fontan physiology. The mean hemoglobin level at baseline was 149 +/- 22 g/L and at follow-up was 139 +/- 29 g/L. The overall prevalence of anemia was 29% at completion. Hyponatremia, decreased renal function, and the use of warfarin were independent predictors of anemia. In conclusion, anemia is common in patients with complex congenital heart disease and ventricular dysfunction, in particular those with Fontan physiology.
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Abstract
OBJECTIVE Thrombosis has been widely described after the Fontan procedure. The vascular endothelium plays a central role in the control of coagulation and fibrinolysis. The aim of this study was to investigate if patients undergoing a modified Fontan procedure have impaired endothelial function and fibrinolysis in the late postoperative course. PATIENTS AND METHODS We compared 23 patients aged from 7 to 26 years with age-matched healthy volunteers, collecting blood samples prior to and following standardized venous occlusion testing. Plasma levels of von Willebrand factor antigen, tissue-type plasminogen activator antigen, plasminogen activator inhibitor-1, and D-dimer were measured with enzyme-linked immunosorbent assay. RESULTS We found increased plasma levels of von Willebrand factor antigen in patients when compared to controls (p = 0.003). At the basal condition, concentrations of tissue-type plasminogen activator antigen and plasminogen activator inhibitor-1 antigen in the plasma, as well as their activity, were not significantly different between patients and controls. Following venous occlusion, concentrations of tissue-type plasminogen activator antigen in the plasma were significantly increased both in patients and controls, compared to pre-occlusion values. D-dimer was within the reference range. Multivariate discriminant analysis differentiated patients and their controls on the basis of differences for plasminogen activator inhibitor-1 and von Willebrand factor antigen (p = 0.0016). CONCLUSIONS Our data suggest that patients with the Fontan circulation may have endothelial dysfunction, as indicated by raised levels of von Willebrand factor. Fibrinolysis seems to be relatively preserved, as suggested by appropriate response to venous occlusion.
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Plasma brain natriuretic peptide and systemic ventricular function in asymptomatic patients late after the Fontan procedure. Heart Vessels 2007; 22:398-403. [DOI: 10.1007/s00380-007-0993-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2006] [Accepted: 05/02/2007] [Indexed: 10/22/2022]
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Watanabe K, Nishikimi T, Takamuro M, Yasuda K, Ishikawa Y, Tanabe S, Yamada O, Yagihara T, Suga S, Kangawa K, Matsuoka H, Echigo S. Possible role of adrenomedullin in the regulation of Fontan circulation: Mature form of plasma adrenomedullin is extracted in the lung in patients with Fontan procedure. ACTA ACUST UNITED AC 2007; 141:129-34. [PMID: 17307261 DOI: 10.1016/j.regpep.2006.12.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2006] [Revised: 12/17/2006] [Accepted: 12/23/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVE We investigated the pathophysiological significance of molecular forms of adrenomedullin (AM) in patients after the Fontan procedure. METHODS Plasma concentrations of mature AM (AM-m), an active form, glycine-extended AM (AM-Gly), an inactive form, and total AM (AM-T: AM-m+AM-Gly) were measured by specific immunoradiometric assay in the femoral vein, pulmonary artery and femoral artery of 29 consecutive patients after the Fontan procedure. The eleven patients who had history of Kawasaki disease and have normal coronary and hemodynamics served as control. RESULTS Patients who underwent Fontan procedure had significantly higher venous concentrations of AM-T, AM-Gly, and AM-m than age-matched normal controls (AM-T, 12.0+/-3.3 vs. 9.6+/-2.0; AM-Gly, 10.4+/-3.0 vs. 8.5+/-1.6; AM-m, 1.6+/-0.7 vs. 1.0+/-0.6 pmol/l, each p<0.05). In patients with Fontan procedure, there were no differences in plasma AM-T, AM-Gly or AM-m levels between the femoral vein and pulmonary artery, however, there was a significant step-down in the AM-m levels, but not in plasma AM-T or AM-Gly levels, between the pulmonary artery and femoral artery (1.3+/-0.6 to 1.0+/-0.6, p<0.05). The venous concentrations of AM-m correlated negatively with systemic blood flow (cardiac output) (r=-0.46, p<0.05). CONCLUSIONS Results suggest that in Fontan circulation plasma AM-m is increased in parallel with those of AM-T and AM-Gly and that AM-m is extracted in the lung. Extracted AM-m may be involved in the regulation of pulmonary arterial tonus, although further studies are necessary to elucidate the exact role of AM in Fontan circulation.
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Affiliation(s)
- Ken Watanabe
- Department of Pediatrics, National Cardiovascular Center, Osaka, Japan
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