<unk>  refers to any functional or anatomic<unk>  of flow out of the<unk>  ventricle.
Left ventricular outflow tract obstruction
Right ventricular outflow tract obstruction
Quadricuspid pulmonary valve
Intraventricular conduction delay
Double orifice mitral valve
Atrioventricular canal defect
Hypertrophic cardiomyopathy outflow obstruction
Deviated septum