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Bouquin H, Koskela JK, Tikkakoski A, Honkonen M, Hiltunen TP, Mustonen JT, Pörsti IH. Differences in heart rate responses to upright posture are associated with variations in the high-frequency power of heart rate variability. Am J Physiol Heart Circ Physiol 2024; 326:H479-H489. [PMID: 38133619 DOI: 10.1152/ajpheart.00567.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023]
Abstract
High resting heart rate is a cardiovascular risk factor, but limited data exist on the underlying hemodynamics and reproducibility of supine-to-upright increase in heart rate. We recorded noninvasive hemodynamics in 574 volunteers [age, 44.9 yr; body mass index (BMI), 26.4 kg/m2; 49% male] during passive head-up tilt (HUT) using whole body impedance cardiography and radial artery tonometry. Heart rate regulation was evaluated using heart rate variability (HRV) analyses. Comparisons were made between quartiles of supine-to-upright heart rate changes, in which heart rate at rest ranged 62.6-64.8 beats/min (P = 0.285). The average upright increases in heart rate in the quartiles 1-4 were 4.7, 9.9, 13.5, and 21.0 beats/min, respectively (P < 0.0001). No differences were observed in the low-frequency power of HRV, whether in the supine or upright position, or in the high-frequency power of HRV in the supine position. Upright high-frequency power of HRV was highest in quartile 1 with lowest upright heart rate and lowest in quartile 4 with highest upright heart rate. Mean systolic blood pressure before and during HUT (126 vs. 108 mmHg) and the increase in systemic vascular resistance during HUT (650 vs. 173 dyn·s/cm5/m2) were highest in quartile 1 and lowest in quartile 4. The increases in heart rate during HUT on three separate occasions several weeks apart were highly reproducible (r = 0.682) among 215 participants. To conclude, supine-to-upright increase in heart rate is a reproducible phenotype with underlying differences in the modulation of cardiac parasympathetic tone and systemic vascular resistance. As heart rate at rest influences prognosis, future research should elucidate the prognostic significance of these phenotypic differences.NEW & NOTEWORTHY Subjects with similar supine heart rates are characterized by variable increases in heart rate during upright posture. Individual heart rate increases in response to upright posture are highly reproducible as hemodynamic phenotypes and present underlying differences in the modulation of cardiac parasympathetic tone and systemic vascular resistance. These results indicate that resting heart rate obtained in the supine position alone is not an optimal means of classifying people into groups with differences in cardiovascular function.
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Affiliation(s)
- Heidi Bouquin
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jenni K Koskela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Milja Honkonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Timo P Hiltunen
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Faculty of Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Jukka T Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka H Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
- Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland
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2
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Csonka L, Tikkakoski A, Tikkakoski AP, Karjalainen J, Lehtimäki L. Relation of changes in PEF and FEV1 in exercise challenge in children. Clin Physiol Funct Imaging 2024; 44:179-185. [PMID: 37933772 DOI: 10.1111/cpf.12864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/12/2023] [Accepted: 10/30/2023] [Indexed: 11/08/2023]
Abstract
Decrease in forced expiratory volume in one second (FEV1 ) of 10% or 15% in exercise challenge test is considered diagnostic for asthma, but a decrease of 15% in peak expiratory flow (PEF) is recommended as an alternative. Our aim was to assess the accuracy of different PEF cut-off points in comparison to FEV1 . We retrospectively studied 326 free running exercise challenge tests with spirometry in children 6-16 years old. FEV1 and PEF were measured before and 2, 5, 10 and 15 min after exercise. Receiver operating characteristics (ROC) analysis, sensitivity, specificity, positive and negative predictive values (PPV and NPV) and ϰ-coefficient were used to analyse how decrease in PEF predicts decrease of 10% or 15% in FEV1 . In the ROC analysis, areas under the curve were 0.851 (p < 0.001) and 0.921 (p < 0.001) for PEF decrease to predict a 10% and 15% decrease in FEV1 , respectively. The agreement between changes in PEF and FEV1 varied from slight to substantial (ϰ values of 0.199-0.680) depending on the cut-points. Lower cut-off for decrease in PEF had higher sensitivity and NPV, while higher cut-off values had better specificity and PPV. Decrease of 20% and 25% in PEF seemed to be the best cut-offs for detecting 10% and 15% decrease in FEV1 , respectively. Still, a fifth of the positive findings based on PEF were false. Change in PEF is not a precise predictor of change in FEV1 in exercise test. The currently recommended cut-point of 15% decrease in PEF seems to be too low and leads to high false positive rate.
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Affiliation(s)
- Leon Csonka
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Anna P Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jussi Karjalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Allergy Centre, Tampere University Hospital, Tampere, Finland
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Kokko E, Choudhary MK, Mutanen A, Honkonen M, Tikkakoski A, Koskela JK, Hämäläinen M, Moilanen E, Viukari M, Matikainen N, Nevalainen PI, Pörsti I. Volume overload is a major characteristic in primary aldosteronism: a 3-year follow-up study. J Hypertens 2024:00004872-990000000-00416. [PMID: 38406920 DOI: 10.1097/hjh.0000000000003696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
OBJECTIVES We examined haemodynamics, focusing on volume balance and forward and backward wave amplitudes, before and after 2.8 years of targeted treatment of primary aldosteronism. Patients with essential hypertension and normotensive individuals were examined for comparison (n = 40 in each group). METHODS Recordings were performed using radial artery pulse wave analysis and whole-body impedance cardiography. Unilateral aldosteronism was treated with adrenalectomy (n = 20), bilateral aldosteronism with spironolactone-based medication (n = 20), and essential hypertension with standard antihypertensive agents. RESULTS Aortic SBP and DBP, forward and backward wave amplitudes, and systemic vascular resistance were equally elevated in primary aldosteronism and essential hypertension. All these haemodynamic variables were similarly reduced by the treatments. Primary aldosteronism presented with 1 litre (∼10%) extracellular water excess (P < 0.001) versus the other groups, and this excess was normalized by treatment. Initial pulse wave velocity (PWV) was similarly increased in primary aldosteronism and essential hypertension, but final values remained higher in primary aldosteronism (P < 0.001). In regression analyses, significant explanatory factors for treatment-induced forward wave amplitude reduction were decreased systemic vascular resistance (β = 0.380) and reduced extracellular water volume (β = 0.183). Explanatory factors for backward wave amplitude reduction were changes in forward wave amplitude (β = 0.599), heart rate (β = -0.427), and PWV (β = 0.252). CONCLUSION Compared with essential hypertension, the principal haemodynamic difference in primary aldosteronism was higher volume load. Volume excess elevated forward wave amplitude, which was subsequently reduced by targeted treatment of primary aldosteronism, along with normalization of volume load. We propose that incorporating extracellular water evaluation alongside routine diagnostics could enhance the identification and diagnosis of primary aldosteronism.
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Affiliation(s)
- Eeva Kokko
- Faculty of Medicine and Health Technology, Tampere University
| | | | - Aapo Mutanen
- Faculty of Medicine and Health Technology, Tampere University
| | - Milja Honkonen
- Faculty of Medicine and Health Technology, Tampere University
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University
- Department of Clinical Physiology and Nuclear Medicine
| | - Jenni K Koskela
- Faculty of Medicine and Health Technology, Tampere University
- Department of Internal Medicine, Tampere University Hospital
| | - Mari Hämäläinen
- Faculty of Medicine and Health Technology, Tampere University
- Immunopharmacology Research Group, Tampere University and Tampere University Hospital, Tampere
| | - Eeva Moilanen
- Faculty of Medicine and Health Technology, Tampere University
- Immunopharmacology Research Group, Tampere University and Tampere University Hospital, Tampere
| | - Marianna Viukari
- Endocrinology, Helsinki University Hospital and Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Niina Matikainen
- Endocrinology, Helsinki University Hospital and Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | | | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University
- Department of Internal Medicine, Tampere University Hospital
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Uusitalo A, Tikkakoski A, Lehtinen P, Ylänen K, Poutanen T, Korhonen PH. Heart rate in newborns is associated with age, sex and maternal levothyroxine therapy. Acta Paediatr 2024. [PMID: 38305638 DOI: 10.1111/apa.17140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/24/2024] [Indexed: 02/03/2024]
Abstract
AIM To evaluate the definition and causes of neonatal bradycardias. METHODS This retrospective study included 135 term-born newborns referred for 24-hour Holter monitoring due to bradycardia. Bradycardia was defined as either a heart rate below 80 beats per minute (standard definition) or a heart rate below our recently published age-specific reference values for neonatal heart rate. RESULTS The mean (SD) age was 6.1 (1.3) days. With standard definition, 107 newborns (79%) had bradycardia, whereas only 20 (15%) had a minimum heart rate lower than the age-specific reference. Younger newborns had lower heart rates. Each day increased the minimum, mean and maximum heart rate by 1.8 (95% CI: 1.0, 2.6), 4.2 (95% CI: 3.0, 5.3) and 2.1 beats per minute (95% CI: 0.3, 3.8), respectively. Male sex and maternal levothyroxine medication were negatively associated with the mean and maximum heart rate. None of the newborns had a cardiac cause for low heart rate. CONCLUSION Among term newborns with bradycardias, younger age, male sex and maternal levothyroxine medication were associated with a lower heart rate on Holter monitoring. Given the age-related increase in heart rate, the 80 beats per minute limit as a universal threshold for abnormal heart rate in newborns appears inappropriate.
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Affiliation(s)
- Asta Uusitalo
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- Tampere Center for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Pieta Lehtinen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Kaisa Ylänen
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- Tampere Center for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Tuija Poutanen
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- Tampere Center for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Päivi H Korhonen
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- Tampere Center for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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5
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Taurio J, Koskela J, Sinisalo M, Tikkakoski A, Niemelä O, Hämäläinen M, Moilanen E, Choudhary MK, Mustonen J, Nevalainen P, Pörsti I. Urine sodium excretion is related to extracellular water volume but not to blood pressure in 510 normotensive and never-treated hypertensive subjects. Blood Press 2023; 32:2170869. [PMID: 36708156 DOI: 10.1080/08037051.2023.2170869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
PURPOSE High sodium intake is an accepted risk factor for hypertension, while low Na+ intake has also been associated with increased risk of cardiovascular events. In this cross-sectional study, we examined the association of 24-h urinary Na+ excretion with haemodynamics and volume status. MATERIALS AND METHODS Haemodynamics were recorded in 510 normotensive and never-treated hypertensive subjects using whole-body impedance cardiography and tonometric radial artery pulse wave analysis. The results were examined in sex-specific tertiles of 24-h Na+ excretion, and comparisons between normotensive and hypertensive participants were also performed. Regression analysis was used to investigate factors associated with volume status. The findings were additionally compared to 28 patients with primary aldosteronism. RESULTS The mean values of 24-h urinary Na+ excretion in tertiles of the 510 participants were 94, 148 and 218 mmol, respectively. Average tertile age (43.4-44.7 years), office blood pressure and pulse wave velocity were corresponding in the tertiles. Plasma electrolytes, lipids, vitamin D metabolites, parathyroid hormone, renin activity, aldosterone, creatinine and insulin sensitivity did not differ in the tertiles. In supine laboratory recordings, there were no differences in aortic systolic and diastolic blood pressure, heart rate, cardiac output and systemic vascular resistance. Extracellular water volume was higher in the highest versus lowest tertile of Na+ excretion. In regression analysis, body surface area and 24-h Na+ excretion were independent explanatory variables for extracellular water volume. No differences in urine Na+ excretion and extracellular water volume were found between normotensive and hypertensive participants. When compared with the 510 participants, patients with primary aldosteronism had 6.0% excess in extracellular water (p = .003), and 24-h Na+ excretion was not related with extracellular water volume. CONCLUSION In the absence of mineralocorticoid excess, Na+ intake, as evaluated from 24-h Na+ excretion, predominantly influences extracellular water volume without a clear effect on blood pressure.
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Affiliation(s)
- Jyrki Taurio
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Jenni Koskela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Marjatta Sinisalo
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Onni Niemelä
- Department of Laboratory Medicine and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Mari Hämäläinen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,The Immunopharmacology Research Group, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Eeva Moilanen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,The Immunopharmacology Research Group, Tampere University and Tampere University Hospital, Tampere, Finland
| | | | - Jukka Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Pasi Nevalainen
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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Sohlberg A, Kangasmaa T, Tikkakoski A. Comparison of post reconstruction- and reconstruction-based deep learning denoising methods in cardiac SPECT. Biomed Phys Eng Express 2023; 9:065007. [PMID: 37666231 DOI: 10.1088/2057-1976/acf66c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
Objective. The quality of myocardial perfusion SPECT (MPS) images is often hampered by low count statistics. Poor image quality might hinder reporting the studies and in the worst case lead to erroneous diagnosis. Deep learning (DL)-based methods can be used to improve the quality of the low count studies. DL can be applied in several different methods, which might affect the outcome. The aim of this study was to investigate the differences between post reconstruction- and reconstruction-based denoising methods.Approach. A UNET-type network was trained using ordered subsets expectation maximization (OSEM) reconstructed MPS studies acquired with half, quarter and eighth of full-activity. The trained network was applied as a post reconstruction denoiser (OSEM+DL) and it was incorporated into a regularized reconstruction algorithm as a deep learning penalty (DLP). OSEM+DL and DLP were compared against each other and against OSEM images without DL denoising in terms of noise level, myocardium-ventricle contrast and defect detection performance with signal-to-noise ratio of a non-prewhitening matched filter (NPWMF-SNR) applied to artificial perfusion defects inserted into defect-free clinical MPS scans. Comparisons were made using half-, quarter- and eighth-activity data.Main results. OSEM+DL provided lower noise level at all activities than other methods. DLP's noise level was also always lower than matching activity OSEM's. In addition, OSEM+DL and DLP outperformed OSEM in defect detection performance, but contrary to noise level ranking DLP had higher NPWMF-SNR overall than OSEM+DL. The myocardium-ventricle contrast was highest with DLP and lowest with OSEM+DL. Both OSEM+DL and DLP offered better image quality than OSEM, but visually perfusion defects were deeper in OSEM images at low activities.Significance. Both post reconstruction- and reconstruction-based DL denoising methods have great potential for MPS. The preference between these methods is a trade-off between smoother images and better defect detection performance.
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Affiliation(s)
- Antti Sohlberg
- Department of Nuclear Medicine, Päijät-Häme Central Hospital, Lahti, Finland
- HERMES Medical Solutions, Stockholm, Sweden
| | - Tuija Kangasmaa
- Department of Clinical Physiology and Nuclear Medicine, Vaasa Central Hospital, Vaasa, Finland
| | - Antti Tikkakoski
- Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
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7
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Värri E, Suojanen L, Koskela JK, Choudhary MK, Tikkakoski A, Kähönen M, Nevalainen PI, Mustonen J, Pörsti I. Ambulatory daytime blood pressure versus tonometric blood pressure measurements in the laboratory: effect of posture. Blood Press Monit 2023; 28:199-207. [PMID: 37318783 PMCID: PMC10309093 DOI: 10.1097/mbp.0000000000000651] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/23/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To compare blood pressure (BP) in tonometric radial artery recordings during passive head-up tilt with ambulatory recordings and evaluate possible laboratory cutoff values for hypertension. METHODS Laboratory BP and ambulatory BP were recorded in normotensive (n = 69), unmedicated hypertensive (n = 190), and medicated hypertensive (n = 151) subjects. RESULTS Mean age was 50.2 years, BMI 27.7 kg/m 2 , ambulatory daytime BP 139/87 mmHg, and 276 were male (65%). As supine-to-upright changes in SBP ranged from -52 to +30 mmHg, and in DBP from -21 to +32 mmHg, the mean values of BP supine and upright measurements were compared with ambulatory BP. The mean(supine+upright) systolic laboratory BP was corresponding to ambulatory level (difference +1 mmHg), while mean(supine+upright) DBP was 4 mmHg lower ( P < 0.05) than ambulatory value. Correlograms indicated that laboratory 136/82 mmHg corresponded to ambulatory 135/85 mmHg. When compared with ambulatory 135/85 mmHg, the sensitivity and specificity of laboratory 136/82 mmHg to define hypertension were 71.5% and 77.3% for SBP, and 71.7% and 72.8%, for DBP, respectively. The laboratory cutoff 136/82 mmHg classified 311/410 subjects similarly to ambulatory BP as normotensive or hypertensive, 68 were hypertensive only in ambulatory, while 31 were hypertensive only in laboratory measurements. CONCLUSION BP responses to upright posture were variable. When compared with ambulatory BP, mean(supine+upright) laboratory cutoff 136/82 mmHg classified 76% of subjects similarly as normotensive or hypertensive. In the remaining 24% the discordant results may be attributed to white-coat or masked hypertension, or higher physical activity during out-of-office recordings.
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Affiliation(s)
- Emmi Värri
- Faculty of Medicine and Health Technology, Tampere University, Departments of
| | - Lauri Suojanen
- Faculty of Medicine and Health Technology, Tampere University, Departments of
- Internal Medicine
| | - Jenni K. Koskela
- Faculty of Medicine and Health Technology, Tampere University, Departments of
- Internal Medicine
| | - Manoj K. Choudhary
- Faculty of Medicine and Health Technology, Tampere University, Departments of
| | - Antti Tikkakoski
- Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Departments of
- Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | | | - Jukka Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Departments of
- Internal Medicine
| | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Departments of
- Internal Medicine
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8
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Sohlberg A, Kangasmaa T, Constable C, Tikkakoski A. Correction: Comparison of deep learning-based denoising methods in cardiac SPECT. EJNMMI Phys 2023; 10:26. [PMID: 37022567 PMCID: PMC10079784 DOI: 10.1186/s40658-023-00542-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Affiliation(s)
- Antti Sohlberg
- Department of Clinical Physiology and Nuclear Medicine, Päijät-Häme Central Hospital, Lahti, Finland.
- HERMES Medical Solutions, Stockholm, Sweden.
| | - Tuija Kangasmaa
- Department of Clinical Physiology and Nuclear Medicine, Vaasa Central Hospital, Vaasa, Finland
| | | | - Antti Tikkakoski
- Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
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9
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Tikkakoski AP, Tikkakoski A, Sipilä K, Kivistö JE, Huhtala H, Kähönen M, Karjalainen J, Lehtimäki L. Exercise-induced bronchoconstriction is associated with air humidity and particulate matter concentration in preschool children. Pediatr Pulmonol 2023; 58:996-1003. [PMID: 36530015 DOI: 10.1002/ppul.26284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Long-term exposure to air pollution is connected to asthma morbidity in children. Exercise-induced bronchoconstriction (EIB) is common in asthma, and the free running test outdoors is an important method for diagnosing asthma in children. It is not known whether momentary air pollution exposure affects the results of outdoor exercise tests in children. METHODS We analyzed all reliable exercise challenge tests with impulse oscillometry in children (n = 868) performed between January 2012 and April 2015 at Tampere University Hospital. Pollutant concentrations (PM2.5 , NO2 , and O3 ) at the time of the exercise test were collected from public registers. We compared the pollutant concentrations with the proportion and severity of EIB and adjusted the analyses for air humidity and pollen counts. RESULTS Pollution levels were rarely high (median PM2.5 6.0 µg/m3 , NO2 12.0 µg/m3 , and O3 47.0 µg/m3 ). The relative change in resistance at 5 Hz after exercise did not correlate with O3 , NO2 or PM2.5 concentrations (p values 0.065-0.884). In multivariate logistic regression, we compared the effects of PM2.5 over 10 µg/m³, absolute humidity (AH) over 10 g/m³ and alder or birch pollen concentration over 10 grains/m³. High (over 10 g/m3 ) AH was associated with decreased incidence (OR 0.31, p value 0.004), and PM2.5 over 10 µg/m³ was associated with increased incidence (OR 1.69, p value 0.036) of EIB. CONCLUSIONS Even low PM2.5 levels may have an effect on EIB in children. Of the other properties of air, only AH was associated with the incidence of EIB.
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Affiliation(s)
- Anna P Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Juho E Kivistö
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Heini Huhtala
- Faculty of Social Sciences, Tampere University, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Jussi Karjalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
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10
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Nynäs P, Vilpas S, Kankare E, Karjalainen J, Lehtimäki L, Numminen J, Tikkakoski A, Kleemola L, Uitti J. Laboratory Test Results in Patients with Workplace Moisture Damage Associated Symptoms—The SAMDAW Study. Healthcare (Basel) 2023; 11:healthcare11070971. [PMID: 37046898 PMCID: PMC10093791 DOI: 10.3390/healthcare11070971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/25/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
The mechanisms of health effects of moisture damage (MD) are unclear, but inflammatory responses have been suspected. The usefulness of laboratory and allergy tests among patients in secondary healthcare with symptoms associated with workplace MD were examined. Full blood count, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), total serum immunoglobulin E (IgE), fractional exhaled nitric oxide (FeNO), and skin prick testing were assessed and analyzed in relation to multiple chemical sensitivity (MCS) and perceived stress in 99 patients and 48 controls. In analysis, t-tests, Mann-Whitney tests, and chi-squared tests were used. Minor clinically insignificant differences in blood counts were seen in patients and controls, but among patients with asthma an elevated neutrophil count was found in 19% with and only in 2% of patients without asthma (p = 0.003). CRP levels and ESR were low, and the study patients’ FeNO, total IgE, or allergic sensitization were not increased compared to controls. The level of stress was high among 26% of patients and 6% of controls (p = 0.005), and MCS was more common among patients (39% vs. 10%, p < 0.001). Stress or MCS were not significantly associated with laboratory test results. In conclusion, no basic laboratory or allergy test results were characteristic of this patient group, and neither inflammatory processes nor allergic sensitization were found to explain the symptoms among these patients. While the value of basic laboratory tests should not be ignored, the use of allergy tests does not seem necessary when symptoms are indicated to be workplace-related.
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Affiliation(s)
- Pia Nynäs
- Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
- Correspondence:
| | - Sarkku Vilpas
- Department of Phoniatrics, Tampere University Hospital, 33520 Tampere, Finland
| | - Elina Kankare
- Department of Phoniatrics, Tampere University Hospital, 33520 Tampere, Finland
| | - Jussi Karjalainen
- Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
- Allergy Centre, Tampere University Hospital, 33520 Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
- Allergy Centre, Tampere University Hospital, 33520 Tampere, Finland
| | - Jura Numminen
- Allergy Centre, Tampere University Hospital, 33520 Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520 Tampere, Finland
| | - Leenamaija Kleemola
- Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
| | - Jukka Uitti
- Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
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11
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Taurio J, Hautaniemi EJ, Koskela JK, Eräranta A, Hämäläinen M, Tikkakoski A, Kettunen JA, Kähönen M, Niemelä O, Moilanen E, Mustonen J, Pörsti I. The characteristics of elevated blood pressure in abdominal obesity correspond to primary hypertension: a cross-sectional study. BMC Cardiovasc Disord 2023; 23:161. [PMID: 36973671 PMCID: PMC10045516 DOI: 10.1186/s12872-023-03150-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 02/27/2023] [Indexed: 03/29/2023] Open
Abstract
BACKGROUND Obesity-related hypertension and the associated metabolic abnormalities are considered as a distinct hypertensive phenotype. Here we examined how abdominal fat content, as judged by waist:height ratio, influenced blood pressure and hemodynamic profile in normotensive subjects and never-treated hypertensive patients. METHODS The 541 participants (20-72 years) underwent physical examination and laboratory analyses and were divided into age and sex-adjusted quartiles of waist:height ratio. Supine hemodynamics were recorded using whole-body impedance cardiography, combined with analyses of radial tonometric pulse wave form and heart rate variability. RESULTS Mean waist:height ratios in the quartiles were 0.46, 0.51, 0.55 and 0.62. Radial and aortic blood pressure, systemic vascular resistance, pulse wave velocity, markers of glucose and lipid metabolism, leptin levels and C-reactive protein were higher in quartile 4 when compared with quartiles 1 and 2 (p < 0.05 for all). Cardiac index was lower in quartile 4 versus quartile 1, while no differences were seen in heart rate variability, augmentation index, plasma renin activity, and aldosterone concentration between the quartiles. Linear regression analyses showed independent associations of abdominal obesity with higher aortic systolic and diastolic blood pressure, systemic vascular resistance, and pulse wave velocity (p < 0.05 for waist:height ratio in all regression models). CONCLUSION Higher waist:height ratio was associated with elevated blood pressure, systemic vascular resistance, and arterial stiffness, but not with alterations in cardiac sympathovagal modulation or activation of the circulating renin-angiotensin-aldosterone system. Although obesity-related elevation of blood pressure has distinct phenotypic features, these results suggest that its main characteristics correspond those of primary hypertension. TRIAL REGISTRATION ClinicalTrails.gov NCT01742702 (date of registration 5th December 2012).
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Affiliation(s)
- Jyrki Taurio
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Elina J Hautaniemi
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
| | - Jenni K Koskela
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
| | - Arttu Eräranta
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
| | - Mari Hämäläinen
- The Immunopharmacology Research group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Jarkko A Kettunen
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Onni Niemelä
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
- Laboratory and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Eeva Moilanen
- The Immunopharmacology Research group, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Jukka Mustonen
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland
| | - Ilkka Pörsti
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
- Faculty of Medicine and Health Technology, Tampere University, FI-33014, Tampere, Finland.
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12
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Sohlberg A, Kangasmaa T, Constable C, Tikkakoski A. Comparison of deep learning-based denoising methods in cardiac SPECT. EJNMMI Phys 2023; 10:9. [PMID: 36752847 PMCID: PMC9908801 DOI: 10.1186/s40658-023-00531-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
BACKGROUND Myocardial perfusion SPECT (MPS) images often suffer from artefacts caused by low-count statistics. Poor-quality images can lead to misinterpretations of perfusion defects. Deep learning (DL)-based methods have been proposed to overcome the noise artefacts. The aim of this study was to investigate the differences among several DL denoising models. METHODS Convolution neural network (CNN), residual neural network (RES), UNET and conditional generative adversarial neural network (cGAN) were generated and trained using ordered subsets expectation maximization (OSEM) reconstructed MPS studies acquired with full, half, three-eighths and quarter acquisition time. All DL methods were compared against each other and also against images without DL-based denoising. Comparisons were made using half and quarter time acquisition data. The methods were evaluated in terms of noise level (coefficient of variation of counts, CoV), structural similarity index measure (SSIM) in the myocardium of normal patients and receiver operating characteristic (ROC) analysis of realistic artificial perfusion defects inserted into normal MPS scans. Total perfusion deficit scores were used as observer rating for the presence of a perfusion defect. RESULTS All the DL denoising methods tested provided statistically significantly lower noise level than OSEM without DL-based denoising with the same acquisition time. CoV of the myocardium counts with the different DL noising methods was on average 7% (CNN), 8% (RES), 7% (UNET) and 14% (cGAN) lower than with OSEM. All DL methods also outperformed full time OSEM without DL-based denoising in terms of noise level with both half and quarter acquisition time, but this difference was not statistically significant. cGAN had the lowest CoV of the DL methods at all noise levels. Image quality and polar map uniformity of DL-denoised images were also better than reduced acquisition time OSEM's. SSIM of the reduced acquisition time OSEM was overall higher than with the DL methods. The defect detection performance of full time OSEM measured as area under the ROC curve (AUC) was on average 0.97. Half time OSEM, CNN, RES and UNET provided equal or nearly equal AUC. However, with quarter time data CNN, RES and UNET had an average AUC of 0.93, which was lower than full time OSEM's AUC, but equal to quarter acquisition time OSEM. cGAN did not achieve the defect detection performance of the other DL methods. Its average AUC with half time data was 0.94 and 0.91 with quarter time data. CONCLUSIONS DL-based denoising effectively improved noise level with slightly lower perfusion defect detection performance than full time reconstruction. cGAN achieved the lowest noise level, but at the same time the poorest defect detection performance among the studied DL methods.
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Affiliation(s)
- Antti Sohlberg
- Department of Clinical Physiology and Nuclear Medicine, Päijät-Häme Central Hospital, Lahti, Finland. .,HERMES Medical Solutions, Stockholm, Sweden.
| | - Tuija Kangasmaa
- grid.417201.10000 0004 0628 2299Department of Clinical Physiology and Nuclear Medicine, Vaasa Central Hospital, Vaasa, Finland
| | - Chris Constable
- grid.451682.c0000 0004 0581 1128HERMES Medical Solutions, Stockholm, Sweden
| | - Antti Tikkakoski
- grid.412330.70000 0004 0628 2985Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
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13
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Ojaniemi I, Salmivesi S, Tikkakoski A, Karjalainen J, Lehtimäki L, Schultz R. Are peanut oral food challenges still useful? An evaluation of children with suspected peanut allergy, sensitization to Ara h 2 and controlled asthma. Allergy Asthma Clin Immunol 2022; 18:100. [PMID: 36451230 PMCID: PMC9714138 DOI: 10.1186/s13223-022-00743-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 11/16/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Sensitization to Ara h 2 has been proposed as a promising biological marker for the severity of peanut allergy and may reduce the need for oral food challenges. This study aimed to evaluate whether peanut oral food challenge is still a useful diagnostic tool for children with suspected peanut allergy and an elevated level of Ara h 2-specific IgE. Additionally, we assessed whether well-controlled asthma is an additional risk for severe reactions. METHODS A retrospective analysis of 107 children with sensitization to Ara h 2-specific IgE (> 0.35 kU/l) undergoing open peanut challenges during 2012-2018 in the Tampere University Hospital Allergy Centre, Finland. RESULTS Of the 107 challenges, 82 (77%) were positive. Serum levels of Ara h 2 -sIgE were higher in subjects with a positive challenge than in those who remained negative (median 32.9 (IQR 6.7-99.8) vs. 2.1 (IQR 1.0-4.9) kU/l), p < 0.001) but were not significantly different between subjects with and without anaphylaxis. No correlation was observed between the serum level of Ara h 2-sIgE and reaction severity grading. Well-controlled asthma did not affect the challenge outcome. CONCLUSIONS Elevated levels of Ara h 2-specific IgE are associated with a positive outcome in peanut challenges but not a reliable predictor of reaction severity. Additionally, well-controlled asthma is not a risk factor for severe reactions in peanut challenges in children with sensitization to Ara h 2.
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Affiliation(s)
- Iida Ojaniemi
- grid.412330.70000 0004 0628 2985Allergy Centre, Tampere University Hospital, PL 2000, 33521 Tampere, Finland
| | - Susanna Salmivesi
- grid.412330.70000 0004 0628 2985Allergy Centre, Tampere University Hospital, PL 2000, 33521 Tampere, Finland
| | - Antti Tikkakoski
- grid.412330.70000 0004 0628 2985 Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Jussi Karjalainen
- grid.412330.70000 0004 0628 2985Allergy Centre, Tampere University Hospital, PL 2000, 33521 Tampere, Finland ,grid.502801.e0000 0001 2314 6254Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Lauri Lehtimäki
- grid.412330.70000 0004 0628 2985Allergy Centre, Tampere University Hospital, PL 2000, 33521 Tampere, Finland ,grid.502801.e0000 0001 2314 6254Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Rüdiger Schultz
- grid.412330.70000 0004 0628 2985Allergy Centre, Tampere University Hospital, PL 2000, 33521 Tampere, Finland ,Pihlajalinna Medical Centre, Tampere, Finland
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14
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Uusitalo A, Tikkakoski A, Reinikainen M, Lehtinen P, Ylänen K, Korhonen P, Poutanen T. Extrasystoles or short bradycardias of the newborn seldom require subsequent 24-hour electrocardiographic monitoring. Acta Paediatr 2022; 111:979-984. [PMID: 35100437 PMCID: PMC10138749 DOI: 10.1111/apa.16259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 12/28/2021] [Accepted: 01/17/2022] [Indexed: 11/29/2022]
Abstract
AIM To retrospectively assess the indications for and findings on 24-hour electrocardiographic (Holter) monitoring in newborns, focussing on bradycardias and extrasystoles. METHODS Data included 337 term-born infants. Holter indications were categorised into bradycardias below 80 beats per minute, extrasystoles, any tachycardia and other. Heart rate below 60 beats per minute, pathological atrioventricular conduction, supraventricular or ventricular tachycardia, or either atrial premature contractions over 10% or ventricular premature contractions over 5% of total beats were defined as significant arrhythmia on Holter. RESULTS The median age was 6 days (range: 2-62 days). Bradycardia (42%) or extrasystoles (32%) were the most common Holter indications. Fifty-three infants (16%) had significant arrhythmia on Holter. Heart disease or 12-lead electrocardiogram expressing extrasystoles or conduction abnormalities were associated with significant arrhythmias (p = 0.046 and p < 0.001, respectively). Twenty-seven of 109 infants (25%) with extrasystoles as a Holter indication had abnormal Holter results, but only seven (6.4%) had significant arrhythmia on Holter if the 12-lead electrocardiogram was normal. No pathology was found behind bradycardias below 80 beats per minute in the absence of heart disease. CONCLUSION Among term newborns with extrasystoles or bradycardias, Holter monitoring could be targeted to infants with heart disease or abnormal electrocardiograms.
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Affiliation(s)
- Asta Uusitalo
- Department of Paediatrics Tampere University Hospital Tampere Finland
- Tampere Center for Child, Adolescent and Maternal Health Research Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine Tampere University Hospital Tampere Finland
| | - Miika Reinikainen
- Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Pieta Lehtinen
- Department of Clinical Physiology and Nuclear Medicine Tampere University Hospital Tampere Finland
| | - Kaisa Ylänen
- Department of Paediatrics Tampere University Hospital Tampere Finland
- Tampere Center for Child, Adolescent and Maternal Health Research Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Päivi Korhonen
- Department of Paediatrics Tampere University Hospital Tampere Finland
- Tampere Center for Child, Adolescent and Maternal Health Research Faculty of Medicine and Health Technology Tampere University Tampere Finland
| | - Tuija Poutanen
- Department of Paediatrics Tampere University Hospital Tampere Finland
- Tampere Center for Child, Adolescent and Maternal Health Research Faculty of Medicine and Health Technology Tampere University Tampere Finland
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15
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Tikkakoski AP, Karjalainen J, Sipilä K, Kivistö JE, Kähönen M, Lehtimäki L, Tikkakoski A. Outdoor pollen concentration is not associated with exercise-induced bronchoconstriction in children. Pediatr Pulmonol 2022; 57:695-701. [PMID: 34894109 DOI: 10.1002/ppul.25782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 11/07/2021] [Accepted: 12/01/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Free running exercise test outdoors is an important method to diagnose asthma in children. However, the extent of how much exposure to pollens of outdoor air affects the results of the test is not known. METHODS We analyzed all reliable exercise challenge tests with impulse oscillometry in children (n = 799) between January 2012 and December 2014 in Tampere University Hospital. Pollen concentrations at the time of the test were collected from the register of Biodiversity Unit of the University of Turku. We compared the frequency of exercise-induced bronchoconstriction and pollen concentrations. RESULTS The analyses were restricted to birch and alder pollen as high counts of grass and mugwort pollen were so infrequent. The relative change in resistance at 5 Hz after exercise or the frequency of exercise-induced bronchoconstriction were not related to alder or birch pollen concentrations over 10 grains/m3 (p = 0.125-0.398). In logistic regression analysis comparing the effects of alder or birch pollen concentrations, immunoglobulin E (IgE)-mediated alder or birch allergy and absolute humidity over 10 g/m3 only absolute humidity was independently associated with change in airway resistance (odds ratio [OR]: 0.32, confidence interval [CI]: 0.13-0.67, p: 0.006). CONCLUSIONS In our large clinical sample, outdoor air pollen concentration was not associated with the probability of exercise-induced bronchoconstriction in free running test in children while low absolute humidity was the best predictor of airway obstruction.
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Affiliation(s)
- Anna P Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jussi Karjalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Juho E Kivistö
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
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16
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Tuominen H, Haarala A, Tikkakoski A, Kähönen M, Nikus K, Sipilä K. FDG-PET in possible cardiac sarcoidosis: Right ventricular uptake and high total cardiac metabolic activity predict cardiovascular events. J Nucl Cardiol 2021; 28:199-205. [PMID: 30815833 PMCID: PMC7920884 DOI: 10.1007/s12350-019-01659-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/01/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cardiac involvement accounts for the majority of morbidity and mortality in sarcoidosis. Pathological myocardial fluorodeoxyglucose (FDG)-uptake in positron emission tomography (PET) has been associated with cardiovascular events and quantitative metabolic parameters have been shown to add prognostic value. Our aim was to study whether the pattern of pathological cardiac FDG-uptake and quantitative parameters are able to predict cardiovascular events in patients with suspected cardiac sarcoidosis (CS). METHODS 137 FDG-PET examinations performed in Tampere University Hospital were retrospectively analyzed visually and quantitatively. Location of pathological uptake was noted and pathological metabolic volume, average standardized uptake value (SUV), and total cardiac metabolic activity (tCMA) were calculated. Patients were followed for ventricular tachycardia, decrease in left ventricular ejection fraction, and death. RESULTS Eleven patients had one or more cardiovascular events during the follow-up. Five patients out of 12 with uptake in both ventricles had an event during follow-up. Eight patients had high tCMA (> 900 MBq) and three of them had a cardiovascular event. Right ventricular uptake and tCMA were significantly associated with cardiovascular events during follow-up (P-value .001 and .018, respectively). CONCLUSIONS High tCMA and right ventricular uptake were significant risk markers for cardiac events among patient with suspected CS.
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Affiliation(s)
- Heikki Tuominen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland.
| | - Atte Haarala
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
| | - Mika Kähönen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Kjell Nikus
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Cardiology, Heart Center, Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
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17
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Oinonen L, Tikkakoski A, Koskela J, Eräranta A, Kähönen M, Niemelä O, Mustonen J, Pörsti I. Parathyroid hormone may play a role in the pathophysiology of primary hypertension. Endocr Connect 2021; 10:54-65. [PMID: 33289696 PMCID: PMC7923049 DOI: 10.1530/ec-20-0446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 12/03/2020] [Indexed: 12/15/2022]
Abstract
Parathyroid hormone has been related with the risk of hypertension, but the matter remains controversial. We examined the association of parathyroid hormone with central blood pressure and its determinants in 622 normotensive or never-treated hypertensive subjects aged 19-72 years without diabetes, cardiovascular or renal disease, or cardiovascular medications. The methods were whole-body impedance cardiography and analyses of pulse wave and heart rate variability. Cardiovascular function was examined in sex-specific tertiles of plasma parathyroid hormone (mean concentrations 3.0, 4.3 and 6.5 pmol/L, respectively) during head-up tilt. Explanatory factors for haemodynamics were further investigated using linear regression analyses. Mean age was 45.0 (s.d. 11.7) years, BMI 26.8 (4.4) kg/m2, seated office blood pressure 141/90 (21/12) mmHg, and 309 subjects (49.7%) were male. Only five participants had elevated plasma parathyroid hormone and calcium concentrations. Highest tertile of parathyroid hormone presented with higher supine and upright aortic diastolic blood pressure (P < 0.01) and augmentation index (P < 0.01), and higher upright systemic vascular resistance (P < 0.05) than the lowest tertile. The tertiles did not present with differences in pulse wave velocity, cardiac output, or measures of heart rate variability. In linear regression analyses, parathyroid hormone was an independent explanatory factor for aortic systolic (P = 0.005) and diastolic (P = 0.002) blood pressure, augmentation index (P = 0.002), and systemic vascular resistance (P = 0.031). To conclude, parathyroid hormone was directly related to central blood pressure, wave reflection, and systemic vascular resistance in subjects without cardiovascular comorbidities and medications. Thus, parathyroid hormone may play a role in the pathophysiology of primary hypertension.
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Affiliation(s)
- Lasse Oinonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Correspondence should be addressed to L Oinonen:
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Jenni Koskela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Arttu Eräranta
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Onni Niemelä
- Department of Laboratory Medicine and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Jukka Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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18
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Kokko E, Nevalainen PI, Choudhary MK, Koskela J, Tikkakoski A, Huhtala H, Niemelä O, Viukari M, Mustonen J, Matikainen N, Pörsti I. Aldosterone-to-renin ratio is related to arterial stiffness when the screening criteria of primary aldosteronism are not met. Sci Rep 2020; 10:19804. [PMID: 33188272 PMCID: PMC7666146 DOI: 10.1038/s41598-020-76718-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/02/2020] [Indexed: 11/28/2022] Open
Abstract
Aldosterone-to-renin ratio (ARR) is a screening tool for primary aldosteronism (PA), but the significance of ARR when the PA criteria are not met remains largely unknown. In this cross-sectional study we investigated the association of ARR with haemodynamic variables in 545 normotensive and never-medicated hypertensive subjects (267 men, 278 women, age range 19–72 years) without suspicion of PA. Supine haemodynamic data was recorded using whole-body impedance cardiography and radial tonometric pulse wave analysis. In sex-adjusted quartiles of ARR, determined as serum aldosterone to plasma renin activity ratio, the mean values were 282, 504, 744 and 1467 pmol/µg of angiotensin I/h, respectively. The only difference in haemodynamic variables between the ARR quartiles was higher pulse wave velocity (PWV) in the highest quartile versus other quartiles (p = 0.004), while no differences in blood pressure (BP), heart rate, wave reflections, cardiac output or systemic vascular resistance were observed between the quartiles. In linear regression analysis with stepwise elimination, ARR was an independent explanatory factor for PWV (β = 0.146, p < 0.001, R2 of the model 0.634). In conclusion, ARR was directly and independently associated with large arterial stiffness in individuals without clinical suspicion of PA. Therefore, ARR could serve as a clinical marker of cardiovascular risk. Trial registration: ClinicalTrails.gov: NCT01742702.
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Affiliation(s)
- Eeva Kokko
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Pasi I Nevalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | | | - Jenni Koskela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Heini Huhtala
- Faculty of Social Sciences, Tampere University, Tampere, Finland
| | - Onni Niemelä
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Clinical Laboratory and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Marianna Viukari
- Endocrinology, Helsinki University Hospital and Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Jukka Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Niina Matikainen
- Endocrinology, Helsinki University Hospital and Research Programs Unit, Clinical and Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland. .,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
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19
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Haarala A, Kähönen E, Koivistoinen T, Pälve K, Hulkkonen J, Tikkakoski A, Sipilä K, Raitakari OT, Lehtimäki T, Kähönen M, Aatola H, Hutri-Kähönen N. Pulse wave velocity is related to exercise blood pressure response in young adults. The Cardiovascular Risk in Young Finns Study. Blood Press 2020; 29:256-263. [DOI: 10.1080/08037051.2020.1750944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Atte Haarala
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Emilia Kähönen
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Teemu Koivistoinen
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
- Department of Emergency Medicine, Kanta-Häme Central Hospital, Hämeenlinna, Finland
| | - Kristiina Pälve
- Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
| | - Janne Hulkkonen
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
- Fimlab Laboratories, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Olli T. Raitakari
- Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
| | - Terho Lehtimäki
- Fimlab Laboratories, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
- Finnish Cardiovascular Research Center-Tampere, Tampere, Finland
| | - Mika Kähönen
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
- Finnish Cardiovascular Research Center-Tampere, Tampere, Finland
| | - Heikki Aatola
- Department of Clinical Physiology and Nuclear Medicine, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Nina Hutri-Kähönen
- Department of Pediatrics, Faculty of Medicine and Health Technology, Tampere University and Tampere University Hospital, Tampere, Finland
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20
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Tuominen H, Haarala A, Tikkakoski A, Kähönen M, Nikus K, Sipilä K. 18-FDG-PET in a patient cohort suspected for cardiac sarcoidosis: Right ventricular uptake is associated with pathological uptake in mediastinal lymph nodes. J Nucl Cardiol 2020; 27:109-117. [PMID: 29721764 DOI: 10.1007/s12350-018-1291-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/17/2018] [Indexed: 11/25/2022]
Abstract
INTRODUCTION In up to 65% of cardiac sarcoidosis patients, the disease is confined to the heart. Diagnosing isolated cardiac sarcoidosis is challenging due to the low sensitivity of endomyocardial biopsy. If cardiac sarcoidosis is part of biopsy-confirmed systemic sarcoidosis, the diagnosis can be based on cardiac imaging studies. We compared the imaging features of patients with isolated cardiac FDG uptake on positron emission tomography with those who had findings indicative of systemic sarcoidosis. MATERIALS AND METHODS 137 consecutive cardiac FDG-PET/CT studies performed on subjects suspected of having cardiac sarcoidosis were retrospectively analyzed. RESULTS 33 patients had pathological left ventricular FDG uptake, and 12 of these also had pathological right ventricular uptake. 16/33 patients with pathological cardiac uptake had pathological extracardiac uptake. 10/12 patients with both LV- and RV-uptake patterns had extracardiac uptake compared to 6/21 of those with pathological LV uptake without RV uptake. SUVmax values in the myocardium were higher among patients with abnormal extracardiac uptake. The presence of extracardiac uptake was the only imaging-related factor that could predict a biopsy indicative of sarcoidosis. CONCLUSION Right ventricular involvement seems to be more common in patients who also have findings suggestive of suspected systemic sarcoidosis, compared with patients with PET findings indicative of isolated cardiac disease.
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Affiliation(s)
- Heikki Tuominen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland.
| | - Atte Haarala
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland
| | - Mika Kähönen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Kjell Nikus
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
- Heart Center, Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland
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21
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Pörsti I, Honkonen M, Vääräniemi K, Saijonmaa O, Tikkakoski A, Koskela J, Eräranta A, Kähönen M, Mustonen J, Fyhrquist F. P36 Leukocyte Telomere Length is Inversely Associated with Wave Reflection in 566 Normotensive and Never-treated Hypertensive Subjects. Artery Res 2020. [DOI: 10.2991/artres.k.191224.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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22
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Oinonen L, Koskela J, Eräranta A, Tikkakoski A, Kähönen M, Niemelä O, Mustonen J, Pörsti I. Plasma total calcium concentration is associated with blood pressure and systemic vascular resistance in normotensive and never-treated hypertensive subjects. Blood Press 2019; 29:137-148. [PMID: 31790289 DOI: 10.1080/08037051.2019.1696180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Purpose: The underlying causes of primary hypertension are not fully understood. Evidence on the relation of plasma calcium concentration with blood pressure (BP) is inconsistent and relies largely on studies utilizing office BP measurements in populations using cardiovascular drugs. In many studies adjustment for confounders was not optimal. In this cross-sectional study we examined the association of plasma total calcium concentration with the haemodynamic determinants of blood pressure.Subjects and methods: Supine haemodynamics were recorded using pulse wave analysis, whole-body impedance cardiography, and heart rate variability analysis in 618 normotensive or never-treated hypertensive subjects (aged 19-72 years) without diabetes, cardiovascular or renal disease, or cardiovascular medications. Linear regression analysis was used to investigate factors associated with haemodynamic variables.Results: Mean age was 45.0 years, body mass index 26.8 kg/m2, seated office BP 141/89 mmHg, and 307 subjects (49.7%) were male. Mean values of routine blood and plasma chemistry analyses were within the reference limits of the tests except for low-density lipoprotein cholesterol (3.05 mmol/l). In the laboratory, mean supine radial BP was 131/75 mmHg, and both systolic and diastolic BP correlated directly with plasma total calcium concentration (r = 0.25 and r = 0.22, respectively, p < 0.001 for both). In regression analysis plasma total calcium concentration was an independent explanatory variable for radial and aortic systolic and diastolic BP, and systemic vascular resistance, but not for cardiac output, pulse wave velocity, or any of the heart rate variability parameters.Conclusion: Plasma total calcium concentration was directly associated with systolic and diastolic BP and systemic vascular resistance in normotensive or never-treated hypertensive subjects without comorbidities and cardiovascular medications. Higher plasma calcium concentration potentially plays a role in primary hypertension via an effect on vascular resistance.
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Affiliation(s)
- Lasse Oinonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jenni Koskela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Arttu Eräranta
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Onni Niemelä
- Department of Laboratory Medicine and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Jukka Mustonen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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23
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Sipilä K, Tikkakoski A, Alanko S, Haarala A, Hernesniemi J, Lyytikäinen LP, Viik J, Lehtimäki T, Nieminen T, Nikus K, Kähönen M. Combination of low blood pressure response, low exercise capacity and slow heart rate recovery during an exercise test significantly increases mortality risk. Ann Med 2019; 51:390-396. [PMID: 31638839 PMCID: PMC7877875 DOI: 10.1080/07853890.2019.1684550] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Aims: We investigated the combination of low systolic blood pressure (SBP) response, low exercise capacity (EC) and slow heart rate recovery (HRR) during an exercise test in mortality prediction.Patients and methods: Our population consisted of 3456 patients from the Finnish Cardiovascular Study. A failure of SBP to increase >42 mmHg was defined as a low response. Low EC was defined as < 8 metabolic equivalents. 1-minute HRR ≤18 bpm from maximum was defined as slow HRR.Results: During a median follow up of 10.0 years, 537 participants died. Reduced SBP response, low EC and slow HRR were independent predictors of all-cause and CV mortality (p < .001 for all). Patients with reduced SBP response, low EC and slow HRR had a very high mortality rate of 42.1% during follow up compared to only 4.5% of the patients without any of these risk factors. The hazard ratios for all-cause mortality in patients with one, two or three of the studied risk factors were 3.2, 6.0, and 10.6, respectively (p < .001 for all).Conclusion: The combination of reduced SBP response, low exercise capacity, and reduced HRR in an exercise test is associated with very high mortality and can be used in risk stratification.Key messagesThe combination of low blood pressure response, low exercise capacity and slow heart rate recovery in an exercise test is able to identify a group of patients in a very high mortality risk.These parameters are easily derived from an exercise test.All parameters are commonly available in clinical practice.
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Affiliation(s)
- Kalle Sipilä
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Sanni Alanko
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Atte Haarala
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Jussi Hernesniemi
- Heart Center, Tampere University Hospital, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | | | - Jari Viik
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Terho Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Tuomo Nieminen
- Department of Internal Medicine, University of Helsinki, Helsinki University Central Hospital, Helsinki, Finland.,South Karelia Central Hospital, Lappeenranta, Finland
| | - Kjell Nikus
- Heart Center, Tampere University Hospital, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Mika Kähönen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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24
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Tikkakoski AP, Tikkakoski A, Kivistö JE, Huhtala H, Sipilä K, Karjalainen J, Kähönen M, Lehtimäki L. Association of air humidity with incidence of exercise-induced bronchoconstriction in children. Pediatr Pulmonol 2019; 54:1830-1836. [PMID: 31393065 DOI: 10.1002/ppul.24471] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 07/24/2019] [Indexed: 01/15/2023]
Abstract
BACKGROUND The effects of humidity and temperature on results of free running test in children are not known. OBJECTIVE Assess the relation of outdoor air temperature, relative humidity (RH), and absolute humidity (AH) to airway obstruction in children after free running exercise test. METHODS We analyzed all exercise challenge tests with impulse oscillometry in children between January 2012 and April 2015 in the Tampere University Hospital. The associations of AH, RH, and temperature of outdoor air with change in airway resistance were studied using regression analysis and by comparing the frequency of exercise-induced bronchoconstriction (increase ≥40% in resistance at 5 Hz) at different levels of temperature and humidity. RESULTS Overall, 868 children with reliable results were included (mean age: 5.4 years; range: 3.0-14.1). In regression analysis, the relative change in resistance at 5 Hz after exercise was related to temperature (regression coefficient = -0.223, P = .020) and AH (regression coefficient = -0.893, P = .002), but not to RH. If absolute air humidity was <5 g/m3 , exercise-induced bronchoconstriction (EIB) occurred in 17.6% of study subjects and at AH levels ≥10 g/m3 , it occurred in 5.9% of study subjects (P = .008). In multiple regression analysis comparing the effects of temperature and humidity and adjusting for covariates, only AH was independently associated with change in airway resistance (P = .009). CONCLUSION High AH of air is associated with lower incidence of EIB after outdoor exercise test in children. A negative test result at AH ≥10 g/m3 should be interpreted with caution.
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Affiliation(s)
- Anna P Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Juho E Kivistö
- Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Heini Huhtala
- Faculty of Social Sciences, Tampere University, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | | | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Allergy Centre, Tampere University Hospital, Tampere, Finland
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25
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Hernesniemi JA, Sipilä K, Tikkakoski A, Tynkkynen JT, Mishra PP, Lyytikäinen LP, Nikus K, Nieminen T, Lehtimaki T, Kähönen M. Cardiorespiratory fitness and heart rate recovery predict sudden cardiac death independent of ejection fraction. Heart 2019; 106:434-440. [PMID: 31422363 DOI: 10.1136/heartjnl-2019-315198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To evaluate whether cardiorespiratory fitness (CRF) and heart rate recovery (HRR) associate with the risk of sudden cardiac death (SCD) independently of left ventricular ejection fraction (LVEF). METHODS The Finnish Cardiovascular Study is a prospective clinical study of patients referred to clinical exercise testing in 2001-2008 and follow-up until December 2013. Patients without pacemakers undergoing first maximal or submaximal exercise testing with cycle ergometer were included (n=3776). CRF in metabolic equivalents (METs) was estimated by achieving maximal work level. HRR was defined as the reduction in heart rate 1 min after maximal exertion. Adjudication of SCD was based on death certificates. LVEF was measured for clinical indications in 71.4% of the patients (n=2697). RESULTS Population mean age was 55.7 years (SD 13.1; 61% men). 98 SCDs were recorded during a median follow-up of 9.1 years (6.9-10.7). Mean CRF and HRR were 7.7 (SD 2.9) METs and 25 (SD 12) beats/min/min. Both CRF and HRR were associated with the risk of SCD in the entire study population (HRCRF0.47 (0.37-0.59), p<0.001 and HRHRR0.57 (0.48-0.67), p<0.001 with HR estimates corresponding to one SD increase in the exposure variables) and with CRF, HRR and LVEF in the same model (HRCRF0.60 (0.45-0.79), p<0.001, HRHRR0.65 (0.51-0.82), p<0.001) or adjusting additionally for all significant risk factors for SCD (LVEF, sex, creatinine level, history of myocardial infarction and atrial fibrillation, corrected QT interval) (HRCRF0.69 (0.52-0.93), p<0.01, HRHRR0.74 (0.58-0.95) p=0.02). CONCLUSIONS CRF and HRR are significantly associated with the risk of SCD regardless of LVEF.
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Affiliation(s)
- Jussi A Hernesniemi
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland .,Department of Cardiology, Tays Heart Hospital, Tampere University Hopsital, Tampere, Finland.,Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology, Tampere University Hospital, University of Tampere, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology, Tampere University Hospital, University of Tampere, Tampere, Finland
| | - Juho T Tynkkynen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Cardiology, Tays Heart Hospital, Tampere University Hopsital, Tampere, Finland.,Department of Radiology, Kanta-Häme Central Hospital, Hämeenlinna, Finland
| | - Pashupati P Mishra
- Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland.,Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Leo-Pekka Lyytikäinen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Cardiology, Tays Heart Hospital, Tampere University Hopsital, Tampere, Finland.,Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland.,Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Kjell Nikus
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Cardiology, Tays Heart Hospital, Tampere University Hopsital, Tampere, Finland.,Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland
| | - Tuomo Nieminen
- Department of Internal Medicine, Päijät-Häme Central-Hospital, Lahti, Finland
| | - Terho Lehtimaki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland.,Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Cardiology, Tays Heart Hospital, Tampere University Hopsital, Tampere, Finland.,Finnish Cardiovascular Research Center Tampere, Tampere University, Tampere, Finland.,Department of Clinical Physiology, Tampere University Hospital, University of Tampere, Tampere, Finland
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26
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Nynäs P, Vilpas S, Kankare E, Karjalainen J, Lehtimäki L, Numminen J, Tikkakoski A, Kleemola L, Uitti J. Observational cross-sectional study on Symptoms Associated to Moisture DAmage at Workplace: the SAMDAW study protocol. BMJ Open 2019; 9:e026485. [PMID: 31243032 PMCID: PMC6597744 DOI: 10.1136/bmjopen-2018-026485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Moisture damage (MD) exposure at work has been shown to increase the risk of new onset asthma and exacerbation of asthma. However, most of the studies in this field have been questionnaire studies. A small proportion of MD-exposed workers are diagnosed with asthma. Many patients with MD exposure at work referred to secondary healthcare report intermittent hoarseness, loss of voice or difficulty to inhale, referring to functional or organic problems of the larynx. For accurate treatment, proper differential diagnostics is paramount. We present an ongoing observational study in which we describe the prevalence of respiratory, voice and other symptoms related to MD at work in patients referred to secondary healthcare. Case-control setting will be used to evaluate the frequencies of the background factors, bronchial hyperreactivity and laryngeal findings. METHODS AND ANALYSIS The study sample consists of patients with workplace MD exposure and associated respiratory tract and/or voice symptoms referred to Tampere University Hospital. The clinical tests conducted to the study patients included comprehensive lung function tests, laboratory and skin prick tests, imaging and clinical evaluation by specialists of respiratory medicine, oto-rhino-laryngology and phoniatrics. The exposure assessment was performed by an occupational physician. The study patients filled out a questionnaire on previous illnesses and other background factors, which for comparison was also sent to 1500 Finnish-speaking people in the same hospital district randomly selected by the Finnish Population Information System. To explore how common laryngeal disorders and voice symptoms are in general, a part of the tests will be conducted to 50 asymptomatic volunteers. ETHICS AND DISSEMINATION The regional ethics committee of Tampere University Hospital approved the study. All study subjects gave their written informed consent, which is required also from the controls. The results will be communicated locally and internationally as conference papers and journal articles.
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Affiliation(s)
- Pia Nynäs
- Department of Occupational Medicine, Finnish Institute of Occupational Health, Tampere, Finland
- Department of Occupational Medicine, Tampere University Hospital, Tampere, Finland
| | - Sarkku Vilpas
- Department of Phoniatrics, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Elina Kankare
- Department of Phoniatrics, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jussi Karjalainen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Lauri Lehtimäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Jura Numminen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Allergy Centre, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Leenamaija Kleemola
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jukka Uitti
- Department of Occupational Medicine, Finnish Institute of Occupational Health, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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27
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Rimpelä JM, Niiranen T, Jula A, Pörsti IH, Tikkakoski A, Havulinna A, Lehtimäki T, Salomaa V, Kontula KK, Hiltunen TP. Genome-wide association study of white-coat effect in hypertensive patients. Blood Press 2019; 28:239-249. [PMID: 31044621 DOI: 10.1080/08037051.2019.1604066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Background: White-coat effect (WCE) confounds diagnosis and treatment of hypertension. The prevalence of white-coat hypertension is higher in Europe and Asia compared to other continents suggesting that genetic factors could play a role. Methods: To study genetic variation affecting WCE, we conducted a two-stage genome-wide association study involving 1343 Finnish subjects. For the discovery stage, we used Genetics of Drug Responsiveness in Essential Hypertension (GENRES) cohort (n = 206), providing the mean WCE values from up to four separate office/ambulatory recordings conducted on placebo. Associations with p values <1 × 10-5 were included in the replication step in three independent cohorts: Haemodynamics in Primary and Secondary Hypertension (DYNAMIC) (n = 182), Finn-Home study (n = 773) and Dietary, Lifestyle and Genetic Determinants of Obesity and Metabolic Syndrome (DILGOM) (n = 182). Results: No single nucleotide polymorphisms reached genome-wide significance for association with either systolic or diastolic WCE. However, two loci provided suggestive evidence for association. A known coronary artery disease risk locus rs2292954 in SPG7 associated with systolic WCE (discovery p value = 2.2 × 10-6, replication p value = 0.03 in Finn-Home, meta-analysis p value 2.6 × 10-4), and rs10033652 in RASGEF1B with diastolic WCE (discovery p value = 4.9 × 10-6, replication p value = 0.04 in DILGOM, meta-analysis p value = 5.0 × 10-3). Conclusion: This study provides evidence for two novel candidate genes, SPG7 and RASGEF1B, associating with WCE. Our results need to be validated in even larger studies carried out in other populations.
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Affiliation(s)
- Jenni M Rimpelä
- a Research Program for Clinical and Molecular Metabolism, Faculty of Medicine , University of Helsinki.,b Department of Medicine , University of Helsinki and Helsinki University Hospital , Helsinki , Finland
| | - Teemu Niiranen
- c Department of Public Health Solutions , National Institute for Health and Welfare, Helsinki, Finland.,d Department of Medicine , University of Turku and Turku University Hospital , Turku , Finland
| | - Antti Jula
- c Department of Public Health Solutions , National Institute for Health and Welfare, Helsinki, Finland
| | - Ilkka H Pörsti
- e Faculty of Medicine and Health Technology , University of Tampere and Tampere University Hospital , Tampere , Finland
| | - Antti Tikkakoski
- f Department of Clinical Physiology and Nuclear Medicine , Tampere University Hospital , Tampere , Finland
| | - Aki Havulinna
- g Institute for Molecular Medicine Finland , FIMM, University of Helsinki, and Department of Health, National Institute for Health and Welfare , Helsinki , Finland
| | - Terho Lehtimäki
- h Department of Clinical Chemistry, Fimlab Laboratories and Finnish Cardiovascular Research Center Tampere, Faculty of Medicine and Health Technology , University of Tampere , Tampere , Finland
| | - Veikko Salomaa
- i Department of Health , National Institute for Health and Welfare , Helsinki , Finland
| | - Kimmo K Kontula
- a Research Program for Clinical and Molecular Metabolism, Faculty of Medicine , University of Helsinki.,b Department of Medicine , University of Helsinki and Helsinki University Hospital , Helsinki , Finland
| | - Timo P Hiltunen
- a Research Program for Clinical and Molecular Metabolism, Faculty of Medicine , University of Helsinki.,b Department of Medicine , University of Helsinki and Helsinki University Hospital , Helsinki , Finland
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28
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Tuominen H, Haarala A, Tikkakoski A, Korkola P, Kähönen M, Nikus K, Sipilä K. 18F-FDG-PET in Finnish patients with clinical suspicion of cardiac sarcoidosis: Female sex and history of atrioventricular block increase the prevalence of positive PET findings. J Nucl Cardiol 2019; 26:394-400. [PMID: 28585031 DOI: 10.1007/s12350-017-0940-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/30/2017] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Fluorodeoxyglucose positron emission tomography (FDG-PET) is a non-invasive imaging modality that has been shown to be a feasible method to demonstrate myocardial inflammation. The aim of this study was to identify the patients suspected of having cardiac sarcoidosis (CS), who are most likely to benefit from PET imaging. MATERIALS AND METHODS 137 patients suspected of having CS underwent a dedicated cardiac FDG-PET examination at Tampere University Hospital between August 2012 and September 2015. These examinations were retrospectively analyzed. RESULTS 33 and 12 of the 137 patients had abnormal left and right ventricular (LV and RV) FDG-uptake, respectively. Abnormal LV-uptake and RV-uptake were significantly associated with female sex and a history of advanced AV-block (P < 0.05). Abnormal RV-uptake was also associated with ventricular tachycardia and atrial fibrillation (P < 0.05). 56% of the 27 female patients with a history of AV-block had a pathological PET finding compared to only 6% of the 49 male patients without a history of AV-block. There were 17 female patients with history of both AV-block and ventricular tachycardia, 71% of them had abnormal PET finding. CONCLUSIONS Abnormal FDG-PET findings were associated with female sex, AV-block, and arrhythmias in this clinical cohort.
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Affiliation(s)
- Heikki Tuominen
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland.
| | - Atte Haarala
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
| | - Antti Tikkakoski
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
| | - Pasi Korkola
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
| | - Mika Kähönen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Kjell Nikus
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
- Heart Center, Tampere University Hospital, Tampere, Finland
| | - Kalle Sipilä
- Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, 33520, Tampere, Finland
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Kangas P, Tikkakoski A, Uitto M, Viik J, Bouquin H, Niemelä O, Mustonen J, Pörsti I. Metabolic syndrome is associated with decreased heart rate variability in a sex-dependent manner: a comparison between 252 men and 249 women. Clin Physiol Funct Imaging 2018; 39:160-167. [PMID: 30307694 DOI: 10.1111/cpf.12551] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 09/19/2018] [Indexed: 11/30/2022]
Abstract
Impaired heart rate variability (HRV) is associated with increased risk of cardiovascular disease, but evidence regarding alterations of HRV in metabolic syndrome (MetS) remains elusive. In order to examine HRV in MetS, we subjected 501 volunteers without atherosclerosis, diabetes or antihypertensive medication, mean age 48 years, to passive head-up tilt. The subjects were divided to control men (n = 131), men with MetS (n = 121), control women (n = 191) and women with MetS (n = 58) according to the criteria by Alberti et al. (Circulation, 2009, 120, 1640). In unadjusted analyses (i) men and women with MetS had lower total power and high-frequency (HF) power of HRV than controls whether supine or upright (P<0·05 for all). (ii) Supine low-frequency (LF) power of HRV was lower in men (P = 0·012) but not in women (P = 0·064) with MetS than in controls, while men and women with MetS had lower upright LF power of HRV than controls (P <0·01 for both). (iii) The LF:HF ratio did not differ between subjects with and without MetS. After adjustment for age, smoking habits, alcohol intake, height, heart rate and breathing frequency, only the differences in upright total power and HF power of HRV between women with MetS and control women remained significant (P<0·05). In conclusion, reduced total and HF power of HRV in the upright position may partially explain why the relative increase in cardiovascular risk associated with MetS is greater in women than in men. Additionally, the present results emphasize that the confounding factors must be carefully taken into consideration when evaluating HRV.
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Affiliation(s)
- Pauliina Kangas
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Clinical Physiology and Nuclear Medicine, Tampere University Hospital, Tampere, Finland
| | - Marko Uitto
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland
| | - Jari Viik
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland
| | - Heidi Bouquin
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Onni Niemelä
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Laboratory Medicine and Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Jukka Mustonen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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Rimpelä JM, Pörsti IH, Jula A, Lehtimäki T, Niiranen TJ, Oikarinen L, Porthan K, Tikkakoski A, Virolainen J, Kontula KK, Hiltunen TP. Genome-wide association study of nocturnal blood pressure dipping in hypertensive patients. BMC Med Genet 2018; 19:110. [PMID: 29973135 PMCID: PMC6032801 DOI: 10.1186/s12881-018-0624-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/12/2018] [Indexed: 01/01/2023]
Abstract
Background Reduced nocturnal fall (non-dipping) of blood pressure (BP) is a predictor of cardiovascular target organ damage. No genome-wide association studies (GWAS) on BP dipping have been previously reported. Methods To study genetic variation affecting BP dipping, we conducted a GWAS in Genetics of Drug Responsiveness in Essential Hypertension (GENRES) cohort (n = 204) using the mean night-to-day BP ratio from up to four ambulatory BP recordings conducted on placebo. Associations with P < 1 × 10− 5 were further tested in two independent cohorts: Haemodynamics in Primary and Secondary Hypertension (DYNAMIC) (n = 183) and Dietary, Lifestyle and Genetic determinants of Obesity and Metabolic Syndrome (DILGOM) (n = 180). We also tested the genome-wide significant single nucleotide polymorphism (SNP) for association with left ventricular hypertrophy in GENRES. Results In GENRES GWAS, rs4905794 near BCL11B achieved genome-wide significance (β = − 4.8%, P = 9.6 × 10− 9 for systolic and β = − 4.3%, P = 2.2 × 10− 6 for diastolic night-to-day BP ratio). Seven additional SNPs in five loci had P values < 1 × 10− 5. The association of rs4905794 did not significantly replicate, even though in DYNAMIC the effect was in the same direction (β = − 0.8%, P = 0.4 for systolic and β = − 1.6%, P = 0.13 for diastolic night-to-day BP ratio). In GENRES, the associations remained significant even during administration of four different antihypertensive drugs. In separate analysis in GENRES, rs4905794 was associated with echocardiographic left ventricular mass (β = − 7.6 g/m2, P = 0.02). Conclusions rs4905794 near BCL11B showed evidence for association with nocturnal BP dipping. It also associated with left ventricular mass in GENRES. Combined with earlier data, our results provide support to the idea that BCL11B could play a role in cardiovascular pathophysiology. Electronic supplementary material The online version of this article (10.1186/s12881-018-0624-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jenni M Rimpelä
- Department of Medicine, University of Helsinki and Helsinki University Hospital, 00290, Helsinki, Finland
| | - Ilkka H Pörsti
- Faculty of Medicine and Life Sciences, University of Tampere and Tampere University Hospital, Tampere, Finland
| | - Antti Jula
- National Institute for Health and Welfare (THL), Helsinki, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories and Finnish Cardiovascular Research Center Tampere, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Teemu J Niiranen
- National Institute for Health and Welfare (THL), Helsinki, Finland.,National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
| | - Lasse Oikarinen
- Division of Cardiology, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kimmo Porthan
- Division of Cardiology, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Antti Tikkakoski
- Faculty of Medicine and Life Sciences, University of Tampere and Tampere University Hospital, Tampere, Finland
| | - Juha Virolainen
- Division of Cardiology, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kimmo K Kontula
- Department of Medicine, University of Helsinki and Helsinki University Hospital, 00290, Helsinki, Finland
| | - Timo P Hiltunen
- Department of Medicine, University of Helsinki and Helsinki University Hospital, 00290, Helsinki, Finland.
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Sipilä K, Tuominen H, Haarala A, Tikkakoski A, Kähönen M, Nikus K. Novel ECG parameters are strongly associated with inflammatory 18 F-FDG PET findings in patients with suspected cardiac sarcoidosis. Int J Cardiol 2017; 249:454-460. [DOI: 10.1016/j.ijcard.2017.07.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/30/2017] [Accepted: 07/06/2017] [Indexed: 01/05/2023]
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32
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Suojanen L, Haring A, Tikkakoski A, Koskela JK, Tahvanainen AM, Huhtala H, Kähönen M, Sipilä K, Eräranta A, Mustonen JT, Kivistö K, Pörsti IH. Haemodynamic Influences of Bisoprolol in Hypertensive Middle-Aged Men: A Double-Blind, Randomized, Placebo-Controlled Cross-Over Study. Basic Clin Pharmacol Toxicol 2017; 121:130-137. [DOI: 10.1111/bcpt.12771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 02/21/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Lauri Suojanen
- School of Medicine; University of Tampere; Tampere Finland
| | - Antti Haring
- School of Medicine; University of Tampere; Tampere Finland
| | | | | | | | - Heini Huhtala
- School of Health Sciences; University of Tampere; Tampere Finland
| | - Mika Kähönen
- School of Medicine; University of Tampere; Tampere Finland
- Department of Clinical Physiology; Tampere University Hospital; Tampere Finland
| | - Kalle Sipilä
- Department of Clinical Physiology; Tampere University Hospital; Tampere Finland
| | - Arttu Eräranta
- School of Medicine; University of Tampere; Tampere Finland
| | - Jukka T. Mustonen
- School of Medicine; University of Tampere; Tampere Finland
- Department of Internal Medicine; Tampere University Hospital; Tampere Finland
| | - Kari Kivistö
- School of Medicine; University of Tampere; Tampere Finland
| | - Ilkka H. Pörsti
- School of Medicine; University of Tampere; Tampere Finland
- Department of Internal Medicine; Tampere University Hospital; Tampere Finland
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Eräranta A, Tikkakoski A, Pörsti IH. Byung Gyu Kim et al.: Reduced systemic vascular resistance is the underlying hemodynamic mechanism in nitrate-stimulated vasovagal syncope during head-up tilt-table test. J Arrhythm 2017; 33:6. [PMID: 28217221 PMCID: PMC5300835 DOI: 10.1016/j.joa.2016.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 04/06/2016] [Indexed: 11/25/2022] Open
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Kangas P, Tahvanainen A, Tikkakoski A, Koskela J, Uitto M, Viik J, Kähönen M, Kööbi T, Mustonen J, Pörsti I. Increased Cardiac Workload in the Upright Posture in Men: Noninvasive Hemodynamics in Men Versus Women. J Am Heart Assoc 2016; 5:JAHA.115.002883. [PMID: 27329447 PMCID: PMC4937251 DOI: 10.1161/jaha.115.002883] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Background Men and women differ in the risk of cardiovascular disease, but the underlying mechanisms are not completely understood. We examined possible sex‐related differences in supine and upright cardiovascular regulation. Methods and Results Hemodynamics were recorded from 167 men and 167 women of matching age (≈45 years) and body mass index (≈26.5) during passive head‐up tilt. None had diabetes mellitus or cardiovascular disease other than hypertension or used antihypertensive medication. Whole‐body impedance cardiography, tonometric radial blood pressure, and heart rate variability were analyzed. Results were adjusted for height, smoking, alcohol intake, mean arterial pressure, plasma lipids, and glucose. Supine hemodynamic differences were minor: Men had lower heart rate (−4%) and higher stroke index (+7.5%) than women (P<0.05 for both). Upright systemic vascular resistance was lower (−10%), but stroke index (+15%), cardiac index (+16%), and left cardiac work were clearly higher (+20%) in men than in women (P<0.001 for all). Corresponding results were observed in a subgroup of men and postmenopausal women (n=76, aged >55 years). Heart rate variability analyses showed higher low:high frequency ratios in supine (P<0.001) and upright (P=0.003) positions in men. Conclusions The foremost difference in cardiovascular regulation between sexes was higher upright hemodynamic workload for the heart in men, a finding not explained by known cardiovascular risk factors or hormonal differences before menopause. Heart rate variability analyses indicated higher sympathovagal balance in men regardless of body position. The deviations in upright hemodynamics could play a role in the differences in cardiovascular risk between men and women. Clinical Trial Registration URL: http://www.clinicaltrials.gov. Unique identifier: NCT01742702.
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Affiliation(s)
| | - Anna Tahvanainen
- School of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Antti Tikkakoski
- School of Medicine, University of Tampere, Finland Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Jenni Koskela
- School of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Marko Uitto
- Department of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland
| | - Jari Viik
- Department of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland
| | - Mika Kähönen
- School of Medicine, University of Tampere, Finland Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Tiit Kööbi
- Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Jukka Mustonen
- School of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Ilkka Pörsti
- School of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
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Kangas P, Tahvanainen A, Tikkakoski A, Koskela J, Uitto M, Viik J, Kahonen M, Koobi T, Jukka Mustonen E, Porsti I. 4.8 INCREASED CARDIAC WORKLOAD IN THE UPRIGHT POSTURE IN MALE SUBJECTS: NON-INVASIVE HEMODYNAMICS IN MEN VERSUS WOMEN. Artery Res 2016. [DOI: 10.1016/j.artres.2016.10.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Porsti I, Vaaraniemi K, Kangas P, Tikkakoski A, Koskela J, Tahvanainen A, Eraranta A, Mustonen J. 5.1 MILD REDUCTION OF GLOMERULAR FILTRATION RATE IS ASSOCIATED WITH INCREASED SYSTEMIC VASCULAR RESISTANCE INDEPENDENT OF CHANGES IN CARDIAC AUTONOMIC TONE. Artery Res 2016. [DOI: 10.1016/j.artres.2016.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Vääräniemi K, Koskela J, Tahvanainen A, Tikkakoski A, Wilenius M, Kähönen M, Kööbi T, Niemelä O, Mustonen J, Pörsti I. Lower glomerular filtration rate is associated with higher systemic vascular resistance in patients without prevalent kidney disease. J Clin Hypertens (Greenwich) 2014; 16:722-8. [PMID: 25228202 DOI: 10.1111/jch.12405] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 07/29/2014] [Accepted: 07/29/2014] [Indexed: 01/22/2023]
Abstract
The authors examined the association between estimated glomerular filtration rate (eGFR), calculated using the Chronic Kidney Disease Epidemiology Collaboration creatinine-cystatin C equation, and hemodynamics in 556 normotensive or never-treated hypertensive patients without kidney disease (mean age, 46 years). Hemodynamic variables were recorded using pulse wave analysis and whole-body impedance cardiography. The mean eGFR was 98 mL/min/1.73 m(2) (range, 64-145 mL/min/1.73 m(2) and one third of the patients had values below 92, while none had proteinuria. In linear regression analyses adjusted for differences in age, weight:height ratio, low-density lipoprotein cholesterol, and sex, significant associations were found between lower eGFR and higher systolic (P=.001) and diastolic blood pressure (P<.001) and higher systemic vascular resistance (P=.001). There was no association between eGFR and cardiac output or extracellular volume. In the absence of clinical kidney disease, lower eGFR was associated with higher blood pressure and systemic vascular resistance. Therefore, early impairment in kidney function may be involved in the pathogenesis of essential hypertension.
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Affiliation(s)
- Kati Vääräniemi
- School of Medicine, University of Tampere, Tampere, Finland; Department of Internal Medicine, Central Hospital of Central Finland, Jyväskylä, Finland
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Tahvanainen A, Koskela J, Tikkakoski A, Lahtela J, Leskinen M, Kähönen M, Nieminen T, Kööbi T, Mustonen J, Pörsti I. Analysis of cardiovascular responses to passive head‐up tilt using continuous pulse wave analysis and impedance cardiography. Scandinavian Journal of Clinical and Laboratory Investigation 2009; 69:128-37. [DOI: 10.1080/00365510802439098] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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