Repair of atrial septal defect primum. Results, course, and prognosis

Repair of atrial septal defect primum (ASD primum) continues to be a challenge to the surgeon. The most common problems involve reconstructing the mitral valve and avoiding rhythm disturbances after the operation. In this report we describe our results in 92 patients with ASD primum who were operated upon between 1955 and 1975.