The presence of a defect (opening) in the septum that separates the two ventricles of the heart. It can be congenital or acquired.
Comprehensive, easy-to-understand information about this condition
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hypoplastic left heart syndrome
MONDO:0004933
familial cardiomyopathy
MONDO:0005217
atrial septal defect
MONDO:0006664
familial bicuspid aortic valve
MONDO:0007194
Alagille syndrome
MONDO:0007318
Holt-Oram syndrome
MONDO:0007732