Heart Diseases [Disease/Finding] Ventricular Outflow Obstruction [Disease/Finding] Ventricular Outflow Obstruction N0000003119 Ventricular Outflow Obstruction Occlusion of the outflow tract in either the LEFT VENTRICLE or the RIGHT VENTRICLE of the heart. This may result from CONGENITAL HEART DEFECTS, predisposing heart diseases, complications of surgery, or HEART NEOPLASMS. C0042512 D014694 C6416 1028258 M0022598