More common due to higher survival rate

Shunt initially left (oxygenated) to right (non-oxygenated)

Atrial septal defect (ASD)

Incomplete closure of atrial septum, 10-15% of CHD’s

Left-to-right shunt → risk of developing CHF

MC presentation: dyspnea, SOB, exercise intolerance, fatigue

Ventricular septal defect (VSD)

Coarctation of the aorta

Double outlet left/rigth ventricle