[Mitral valve and left ventricular function in ostium secundum type interatrial communication, studied by left ventriculography].

Clinical, hemodynamic and cineangiographic studies were performed in 11 patients with atrial septal defect (ASD) of ostium secundum type. Mitral valve prolapse was found cineangiographically in 9 cases. Systolic and diastolic left ventricular volumes were significantly increased, while left ventricular function and compliance were normal. A careful systematic exploration of mitral valve in patients with ASD ostium secundum seems to be advisable.