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Ann Thorac Surg 1995;59:662-663
© 1995 The Society of Thoracic Surgeons

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Invited Commentary

Invited Commentary

Division of Cardiovascular Surgery The Toronto Hospital 200 Elizabeth St Toronto, Ontario M5G 2C4 Canada Secretary-Treasurer Southern Thoracic Surgical Association 401 North Michigan Avenue Chicago, IL 60611-4267

See also page 658.

Okada and associates have shown that the motion of the mitral annulus during the cardiac cycle after mitral valve repair for chronic mitral regurgitation due to degenerative disease of the mitral valve is affected by the type of annuloplasty ring used. As I would expect, they found that the shape and area of the mitral annulus did not change during the cardiac cycle in patients who had annuloplasty with a Carpentier ring, but they did so in patients who had annuloplasty with a Duran ring. A more important finding was that the diastolic blood flow across the mitral valve during exercise was better in patients with the Duran ring. This is new and important information.

Because the two groups of patients were studied at different postoperative time intervals (9 and 30 months) and the study was not randomized, the data on left ventricular function has to be interpreted with caution. Although we have found that left ventricular systolic function soon after operation is better in patients who had annuloplasty with a flexible ring than it is in those who had annuloplasty with a rigid ring, there was no difference between these two groups 2 years later. This observation suggests that the left ventricle has compensatory mechanisms to overcome the rigid fixation of the mitral annulus, or that the flexible ring becomes stiffer after a few years. Most patients had fairly normal left ventricular function regardless of the type of annuloplasty ring used.

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Comparison of the Carpentier and Duran Prosthetic Rings Used in Mitral Reconstruction

Yukikatsu Okada, Toyo Shomura, Yasuko Yamaura, and Junichi Yoshikawa
Ann. Thorac. Surg. 1995 59: 658-662. [Abstract] [Full Text]

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This Article Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Personal Folders Download to citation manager Author home page(s): Tirone E. David Permission Requests Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by David, T. E. Search for Related Content PubMed Articles by David, T. E. Related Collections Related Article