Exercise capacity in adult patients with tetralogy of Fallot

Background: On a group level, patients with repaired tetralogy of Fallot have impaired exercise capacity. Since exercise capacity is related to prognosis, and more patients survive into higher age, it is important to know the expected exercise capacity at different ages. Furthermore, factors associa...

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Autores principales: Anette Sandström, Anna Wikner, Daniel Rinnström, Camilla Sandberg, Christina Christersson, Mikael Dellborg, Niels Erik Nielsen, Peder Sörensson, Ulf Thilén, Bengt Johansson
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:22f1742bdf514e38b930e644a00043242021-11-06T04:37:46ZExercise capacity in adult patients with tetralogy of Fallot2666-668510.1016/j.ijcchd.2021.100204https://doaj.org/article/22f1742bdf514e38b930e644a00043242021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666668521001282https://doaj.org/toc/2666-6685Background: On a group level, patients with repaired tetralogy of Fallot have impaired exercise capacity. Since exercise capacity is related to prognosis, and more patients survive into higher age, it is important to know the expected exercise capacity at different ages. Furthermore, factors associated with exercise capacity and the relation between exercise capacity and mortality need further evaluation. Methods: The national register of congenital heart disease was searched for exercise tests in adults with repaired tetralogy of Fallot. The results from exercise tests were compared with national reference data. Results: 314 patients were identified (median age 33.2 [IQR 24.8–44.7], 40.8% women). The mean percent of predicted workload was 74.8 (±19.6) % without change across ages. In multivariable analysis, NYHA class I (odds ratio [OR]4.2, 95% confidence interval [CI]1.7–10.0) and higher physical activity level (>3 ​h/week) (OR 3.6, 95%CI 1.8–7.3) were positively associated with higher exercise capacity, while ongoing cardiovascular therapy (OR 0.4, 95%CI 0.2–0.7) and male sex (OR 0.3, 95%CI 0.2–0.6) were negatively associated with higher exercise capacity. Both exercise capacity (HR 0.96, 95%CI 0.93–0.98) and heart rate reserve (HR 0.96, 95%CI 0.94–0.98) were associated with mortality. Conclusions: In patients with repaired tetralogy of Fallot the exercise capacity was approximately 75% of expected, regardless of age. Patients with better NYHA class and high physical activity level had a higher exercise capacity. Low exercise capacity and low heart rate reserve were associated with higher mortality. Therefore, evaluating exercise capacity as part of follow up is of importance.Anette SandströmAnna WiknerDaniel RinnströmCamilla SandbergChristina ChristerssonMikael DellborgNiels Erik NielsenPeder SörenssonUlf ThilénBengt JohanssonElsevierarticleAdult congenital heart diseaseTetralogy of FallotExercise testExercise capacityRegisterDiseases of the circulatory (Cardiovascular) systemRC666-701ENInternational Journal of Cardiology Congenital Heart Disease, Vol 5, Iss , Pp 100204- (2021)
institution DOAJ
collection DOAJ
language EN
topic Adult congenital heart disease
Tetralogy of Fallot
Exercise test
Exercise capacity
Register
Diseases of the circulatory (Cardiovascular) system
RC666-701
spellingShingle Adult congenital heart disease
Tetralogy of Fallot
Exercise test
Exercise capacity
Register
Diseases of the circulatory (Cardiovascular) system
RC666-701
Anette Sandström
Anna Wikner
Daniel Rinnström
Camilla Sandberg
Christina Christersson
Mikael Dellborg
Niels Erik Nielsen
Peder Sörensson
Ulf Thilén
Bengt Johansson
Exercise capacity in adult patients with tetralogy of Fallot
description Background: On a group level, patients with repaired tetralogy of Fallot have impaired exercise capacity. Since exercise capacity is related to prognosis, and more patients survive into higher age, it is important to know the expected exercise capacity at different ages. Furthermore, factors associated with exercise capacity and the relation between exercise capacity and mortality need further evaluation. Methods: The national register of congenital heart disease was searched for exercise tests in adults with repaired tetralogy of Fallot. The results from exercise tests were compared with national reference data. Results: 314 patients were identified (median age 33.2 [IQR 24.8–44.7], 40.8% women). The mean percent of predicted workload was 74.8 (±19.6) % without change across ages. In multivariable analysis, NYHA class I (odds ratio [OR]4.2, 95% confidence interval [CI]1.7–10.0) and higher physical activity level (>3 ​h/week) (OR 3.6, 95%CI 1.8–7.3) were positively associated with higher exercise capacity, while ongoing cardiovascular therapy (OR 0.4, 95%CI 0.2–0.7) and male sex (OR 0.3, 95%CI 0.2–0.6) were negatively associated with higher exercise capacity. Both exercise capacity (HR 0.96, 95%CI 0.93–0.98) and heart rate reserve (HR 0.96, 95%CI 0.94–0.98) were associated with mortality. Conclusions: In patients with repaired tetralogy of Fallot the exercise capacity was approximately 75% of expected, regardless of age. Patients with better NYHA class and high physical activity level had a higher exercise capacity. Low exercise capacity and low heart rate reserve were associated with higher mortality. Therefore, evaluating exercise capacity as part of follow up is of importance.
format article
author Anette Sandström
Anna Wikner
Daniel Rinnström
Camilla Sandberg
Christina Christersson
Mikael Dellborg
Niels Erik Nielsen
Peder Sörensson
Ulf Thilén
Bengt Johansson
author_facet Anette Sandström
Anna Wikner
Daniel Rinnström
Camilla Sandberg
Christina Christersson
Mikael Dellborg
Niels Erik Nielsen
Peder Sörensson
Ulf Thilén
Bengt Johansson
author_sort Anette Sandström
title Exercise capacity in adult patients with tetralogy of Fallot
title_short Exercise capacity in adult patients with tetralogy of Fallot
title_full Exercise capacity in adult patients with tetralogy of Fallot
title_fullStr Exercise capacity in adult patients with tetralogy of Fallot
title_full_unstemmed Exercise capacity in adult patients with tetralogy of Fallot
title_sort exercise capacity in adult patients with tetralogy of fallot
publisher Elsevier
publishDate 2021
url https://doaj.org/article/22f1742bdf514e38b930e644a0004324
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