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Ann Thorac Surg 2002;74:251-253
© 2002 The Society of Thoracic Surgeons

Case report

Maze procedure and cor triatriatum repair

Hiroyuki Nakajima, MDa, Junjiro Kobayashi, MD*a, Takashi Kurita, MDb, Soichiro Kitamura, MDa

a Departments of Cardiovascular Surgery,National Cardiovascular Center, Osaka, Japan
b Department of Cardiology, National Cardiovascular Center, Osaka, Japan

Accepted for publication December 17, 2001.

* Address reprint requests to Dr Kobayashi, Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
e-mail: jkobayas{at}hsp.ncvc.go.jp

A 39-year-old man had cor triatriatum (Lucas-Schmidt type IA) with severe mitral regurgitation and atrial fibrillation. We performed resection of the anomalous septum between the accessory chamber and the left atrium, and conducted mitral valve repair and the maze procedure. The patient regained sinus rhythm and normal pulmonary venous drainage to the left ventricle without mitral regurgitation. Histological examination demonstrated fibrotic myocardial structures in the anomalous septum. The maze procedure and complete excision of the anomalous septum proved to be effective surgical treatment for atrial fibrillation with cor triatriatum.






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