Defect in septum separating left and right ventricles
Second most common congenital heart defect
Can be isolated, due to chromosomal abnormalities (5%), or coexist with other heart defects such as Tetralogy of Fallot
Clinical presentations vary depending on comorbid conditions
Ventricular septal defect
Pulmonary stenosis
Atrial septal defect
Patent ductus arteriosus
Tricuspid atresia
Tetralogy of Fallot
Ebstein anomaly
Aortic stenosis