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Ventricular septal defect.

Ventricular septal defect.
Ventricular septal defect.

Pulmonary blood flow and LA and LV volumes are increased. Atrial pressures are mean pressures. RV pressure and oxygen saturation are variably elevated, positively related to defect size. AO = aorta; IVC = inferior vena cava; LA = left atrium; LV = left ventricle; PA = pulmonary artery; PV = pulmonary veins; RA = right atrium; RV = right ventricle; SVC = superior vena cava.