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  • Title: Mitral valve annuloplasty for degenerative disease: assessment of four different techniques.
    Author: Milano A, Codecasa R, De Carlo M, Nardi C, Tartarini G, Verunelli F, Bortolotti U.
    Journal: J Heart Valve Dis; 2000 May; 9(3):321-6. PubMed ID: 10888085.
    Abstract:
    BACKGROUND AND AIM OF THE STUDY: Mitral valve repair (MVR) is the treatment of choice in patients with degenerative valve disease. However, controversy persists as to whether mitral valve annuloplasty should always be included as part of the reconstructive procedure. METHODS: The records of 62 consecutive patients undergoing MVR for degenerative disease between January 1994 and December 1996 were reviewed. Four different annuloplasty techniques were associated with various MVR procedures: local posterior annuloplasty (group 1, n = 10), rigid Carpentier ring (group 2, n = 20), Duran ring (group 3, n = 17), and posterior annular plication with autologous pericardium (group 4, n = 15). The four patient groups were similar in terms of preoperative clinical and echocardiographic characteristics. Serial clinical and echocardiographic follow up was performed to assess functional status and stability of repair. RESULTS: There were no early or late deaths. Mean follow up in the entire patient series was 31 +/- 12 months. One patient in group 2 required reoperation 14 months after MVR. In all groups there was a significant improvement in NYHA functional class (from 2.7 +/- 0.6 to 0.9 +/- 0.5, p <0.001), with a reduction of left ventricular end-diastolic and end-systolic volumes (154 +/- 50 ml to 105 +/- 33 ml, p <0.001; and 64 +/- 23 ml to 52 +/- 22 ml, p <0.001). In patients of groups 2, 3 and 4, residual mitral incompetence at follow up (0.8 +/- 0.9 in group 2, 0.8 +/- 0.7 in group 3, and 0.2 +/- 0.6 in group 4) was not significantly different from discharge. However, in group 1, a higher degree of residual mitral regurgitation was present at discharge (0.9 +/- 0.6) with a trend to progress at follow up (1.6 +/- 0.5). CONCLUSION: In patients with degenerative mitral valve disease, MVR provides clinical and functional improvement. Techniques of stabilization of the entire posterior mitral annulus achieve better early and medium-term results, and should be always considered as part of MVR. Autologous pericardium appears to be an excellent annuloplasty material, though its apparent superiority over synthetic rings must be confirmed at longer follow up.
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