ABSTRACT The following paper describes patch closure (bovine pericardial sheet) of an ostium primum atrial septal defect and mitral valve repair (sutured mitral valve cleft + autologous pericardial annuloplasty + Alfieri’s method) in a 50-year-old man. He had been perfectly well until he was brought to the emergency room because of acute heart failure. Chest radiography revealed right-side heart enlargement. Electrocardiography indicated atrial flutter. Echocardiography revealed a large ostium primum atrial septal defect and moderate mitral regurgitation. The pulmonary-to-systemic blood flow ratio was 3.24. First, cardiologists performed catheter ablation of the cavotricuspid isthmus for atrial flutter. We performed patch closure of an ostium primum atrial septal defect and mitral valve repair after the patient’s heart failure was under control. The patient was discharged 13 days postoperatively in a satisfactory condition without any critical complications.
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