Survival and Risk Factors for Mortality in Infants With Congenital Heart Disease in South Korea

Jue Seong Lee, Jehe Kwon, Hannah Cho, Ju Sun Heo, Kee Soo Ha, Gi Young Jang, O Kyu Noh, Jun Eun Park
Korea University Medical Center and Korea University College of Medicine. University of Oxford. Ajou University School of Medicine.
Republic of Korea

In Vivo
In Vivo 2024; 38: 1984-1992
DOI: 10.21873/invivo.13655

Abstract
Background/aim: The survival of patients with congenital heart disease (CHD) has dramatically improved over recent decades. However, a disparity exists depending on the country and medical system. This study aimed to analyze the survival of infants with CHD until the age of 18 years using large-scale population data in South Korea and investigate the effect of neonatal conditions at birth.
Patients and methods: We retrospectively extracted the Korean National Health Insurance Service claims data from January 2002 to December 2020. We included patients diagnosed with CHD who were less than one year of age. The follow-up duration was until their death or until they were censored before the age of 18 years. The CHD lesions were classified hierarchically (conotruncal, severe non-conotruncal, coarctation of the aorta, ventricular septal defect, atrial septal defect, and others). Several neonatal conditions were adopted as risk factors.
Results: Overall, 127,958 infants had been diagnosed with CHD and 2,275 died before the age of 18 years. The survival rate of infants with CHD during childhood was 97.9%. The highest childhood mortality rate was associated with non-conotruncal defects (19.7%), followed by conotruncal defects (10.2%). The significant risk factors for childhood mortality were complex CHD, pulmonary hypertension, birth asphyxia, small for gestational age, respiratory distress, pulmonary hemorrhage, bronchopulmonary dysplasia, and convulsions.
Conclusion: The survival of infants with CHD has been favorable in South Korea. Several neonatal conditions are risk factors for childhood mortality. Individualized risk assessment and optimal treatment strategies may help improve their survival rate.

Category
Class I. Pulmonary Hypertension Associated with Congenital Cardiovascular Disease

Age Focus: Pediatric Pulmonary Vascular Disease

Fresh or Filed Publication: Fresh (PHresh). Less than 1-2 years since publication

Article Access
Free PDF File or Full Text Article Available Through PubMed or DOI: Yes

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