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Survivorship in Children and Young Adults With Congenital Heart Disease in Sweden

Journal article
Authors Zacharias Mandalenakis
Annika Rosengren
Kristofer Skoglund
Georg Lappas
Peter J Eriksson
Mikael Dellborg
Published in JAMA internal medicine
Volume 177
Issue 2
Pages 224-230
ISSN 2168-6106
Publication year 2017
Published at Institute of Medicine, Department of Molecular and Clinical Medicine
Pages 224-230
Language en
Links dx.doi.org/10.1001/jamainternmed.20...
Subject categories Clinical Medicine

Abstract

Importance: Mortality in patients with congenital heart disease (CHD) has markedly decreased during recent decades because of advancement in pediatric care. However, there are limited data on survival trends in children and young adults with CHD compared with the general population. Objective: To determine survivorship in children and young adults with CHD compared with matched controls. Design, Setting, and Participants: A registry-based, prospective, matched-cohort study was conducted in Sweden. Data from the national patient and cause of death registers were linked to identify individuals with CHD born between January 1, 1970, and December 31, 1993, who were registered at or after birth. Follow-up and comorbidity data were collected until December 31, 2011. Survival analyses were performed with the Cox proportional hazards model; these analyses were performed from January 1, 1970, to December 31, 2011. A total of 21982 patients with CHD in Sweden were identified. The mean (SD) follow-up time was 27.0 (8.86) years. Children serving as controls (n = 219816) (10 for each patient), matched for birth year, sex, and county, were randomly selected from the general population. Main Outcomes and Measures: Survivorship in young patients with CHD and controls. Results: Of the 21982 patients who were born between 1970 and 1993 and were registered with the diagnosis of CHD, 10650 were female (48.4%). Median age at index registration was 4.22 years (interquartile range, 17.07 years). Survivorship among children younger than 5 years was increased from 96% in those born in 1970-1979 to 98% in those born in 1990-1993. Hazard ratios (HRs) of death in relation to that in control individuals decreased from 225.84 (95% CI, 136.84-372.70) to 33.47 (95% CI, 22.54-49.70). A substantial, but less pronounced, absolute and relative increase in survivorship was found in older patients (HRs ranged from 24.52; 95% CI, 11.72-51.26, at 5-9 years to 4.27; 95% CI, 2.29-7.95, at 18-29 years). According to a hierarchical CHD classification, the group of patients with the most severe complex defects (ie, common arterial trunk, transposition of the great vessels, double inlet ventricle, hypoplastic left heart syndrome, tetralogy of Fallot, and atrioventricular septal defect) had the highest risk for death (HR, 64.07; 95% CI, 53.39-76.89). Conclusions and Relevance: Despite substantially increasing absolute and relative survivorship in children and young adults with CHD, the mortality risk remains high compared with the risk in matched controls. Further research on reducing the death rate in this vulnerable group is required.

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