Management of the left atrioventricular valve in 95 patients with atrioventricular septal defects and a common atrioventricular orifice—a ten year review

During a 10 year interval, between January 1, 1981 and January 1, 1991, primary repair of atrioventricular septal defect with a common atrioventricular orifice was performed in 95 patients younger than 1 year. Patients with atrioventricular septal defect having two atrioventricular orifices and a small ventricular septal defect, and those with severe hypoplasia of the left ventricle, were not included in the present study. According to the presence of associated anomalies, patients were divided into those with simple forms (72%) and those with complex forms (28%). These included parachute deformity of the left atrioventricular valve (10 cases), multiple muscular ventricular septal defects (5 cases), low-lying infundibular stenosis of the right ventricle (4 cases), obstruction of the left ventricular outflow tract (3 cases), tetralogy ofFallot (2 cases) and hypoplasia of the left ventricle (2 cases).