Hypertrophic cardiomyopathy is the single most common form of inherited heart disease. Left ventricular outflow tract obstruction (LVOTO) is a recognised feature of this condition which arises when blood leaving the outflow tract is impeded by systolic anterior motion of the mitral valve. In an important minority of patients, breathlessness, chest pain and syncope may result and persist despite...

Accessory mitral valve tissue (AMVT) is a rare congenital anomaly of endocardial cushion. Usually, it arises from the anterior mitral leaflet and causes the left ventricular outflow tract obstruction. We report here the first and a rarest presentation of the AMVT in a 19-year old female patient diagnosed to have double outlet right ventricle, ventricular septal defect (VSD), infundibular stenos...

Three patients operated upon under hypothermia for severe valvular pulmonic stenosis had right ventricular pressures in excess of 100 mm. Hg after open valvotomy. The residual obstruction, localized by pressure measurements to the subvalvular region, appeared to be due to greatly hypertrophied musculature in the outflow tract of the ventricle. Infundibular resection was not attempted. Electroca...