Epidemiology of Congenital Heart Diseases; global health burden, especially among infants and young

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Published Sep 6, 2025

epidemiology of congenital heart diseases (CHDs) reveals their significant global impact as the most common birth defects and a leading cause of infant morbidity and mortality.

???? Global Prevalence
CHDs affect approximately 1% of live births worldwide, translating to over 4 million children under age five living with CHD as of 2021.

Septal defects—especially ventricular septal defects (VSDs) and atrial septal defects (ASDs)—are the most frequently diagnosed types.

About 1 in 4 babies born with CHD have a critical defect, requiring surgery or intervention within the first year of life.

???? Trends Over Time
From 1990 to 2021:

Global CHD prevalence increased by 3.4%

CHD-related mortality decreased by 56.2%

Disability-adjusted life years (DALYs) dropped by 55.7%, reflecting better care and survival

Improvements in diagnostic tools, surgical techniques, and neonatal care have contributed to these gains

???? Regional Disparities
South Asia has the highest number of CHD cases, while Oceania shows the highest mortality and DALY rates

Countries with low Socio-Demographic Index (SDI) face higher CHD burden due to limited access to care

In the U.S., CHDs affect about 40,000 births annually, with 1 million children and 1.4 million adults living with heart defects as of 2010

???? Why It Matters
Understanding CHD epidemiology helps:

Guide health policy and resource allocation

Improve early detection and intervention

Support global efforts to reduce disparities in outcomes

#Epidemiology #congenitalheartdefects #Heart #Diseases