Long-term Assessment of Mitral Valve Reconstruction With Resection of the Leaflets: Triangular and Quadrangular Resection

• Published in: The Annals of thoracic surgery Vol. 79; no. 2; pp. 475 - 479
• Main Authors: Sakamoto, Yoshimasa, Hashimoto, Kazuhiro, Okuyama, Hiroshi, Ishii, Shinichi, Hanai, Makoto, Inoue, Takahiro, Shinohara, Gen, Morita, Kiyozo, Kurosawa, Hiromi
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.02.2005; Elsevier Science
• Subjects: Actuarial Analysis; Adult; Aged; Biological and medical sciences; Echocardiography; Female; Follow-Up Studies; Humans; Male; Medical sciences; Middle Aged; Mitral Valve - surgery; Mitral Valve Insufficiency - diagnostic imaging; Mitral Valve Insufficiency - mortality; Mitral Valve Insufficiency - surgery; Mitral Valve Prolapse - diagnostic imaging; Mitral Valve Prolapse - mortality; Mitral Valve Prolapse - surgery; Reoperation; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Surgery of the respiratory system; Survival Rate; Suture Techniques; Treatment Outcome; 35; Reconstruction; Mitral valve; Treatment; Respiratory disease; Surgery; Surgical resection; Thorax; Long term
• ISSN: 0003-4975; 1552-6259
• DOI: 10.1016/j.athoracsur.2004.07.046

The procedure of quadrangular resection and suture for prolapsed posterior leaflet of the mitral valve is a reliable and reproducible method that achieves excellent long-term results. However, triangular resection and suture of a prolapsed anterior leaflet is not widely supported and different techniques have been advocated. The aim of this study was to review our experience of mitral valve repair in which resection of the anterior and/or posterior leaflets was performed. Between October 1991 and September 2003, 105 patients with mitral regurgitation underwent mitral valve reconstruction with leaflet resection, including 55 patients with quadrangular resection of the posterior leaflet (P), 32 patients with triangular resection of the anterior leaflet (A), and 18 patients with resection of both leaflets (A+P). The mean follow-up period was 63.6 (1 to 139) months. Reoperation was required in 2 patients, each after resection of the anterior or posterior leaflet. The freedom from reoperation rates at 10 years in 93% ± 5% of patients after triangular resection of the anterior leaflet, 96% ± 3% after quadrangular resection of the posterior leaflet, and 100% after resection of both leaflets. There were no significant differences of survival or risk of reoperation among these three groups. The postoperative mitral valve area was significantly smaller than the preoperative area in all three groups, but remained large enough (A: 2.84 ± 1.07; P: 2.6 ± 0.87; A+P: 3.09 ± 1.20 cm 2) for adequate valve function. Triangular resection of a prolapsed anterior mitral leaflet is a reliable, reproducible, and durable procedure, like quadrangular resection of a prolapsed posterior leaflet.