[A successful surgical correction of the intermediate type of common atrioventricular orifice--report of an adult case].

A 42-year-old female was admitted to our hospital because of exertional dyspnea. Preoperative color Doppler echocardiogram revealed massive left to right shunt through the ostium primum defect, moderate mitral and tricuspid regurgitation, and trivial shunt via the small ventricular septal defect. Preoperative cardioangiogram also demonstrated goose neck deformity of the left ventricle. At the operation, the piece of atrioventricular valve fused on the summit of the small scooped ventricular defect was detected, and the total correction consisted of patch closure of the ostium primum defect and mitral and tricuspid valvuloplasty was performed. Postoperative course was uneventful. This is the first adult case reported in Japan who was operated on for the intermediate type of common atrioventricular orifice.