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  • Title: Semicircular suture annuloplasty for mitral regurgitation: appraisal of the Paneth-Burr method.
    Author: Matsuda H, Shintani H, Taniguchi K, Mitsuno M, Miyamoto Y, Kadoba K, Shimazaki Y.
    Journal: J Heart Valve Dis; 1997 Jan; 6(1):48-53. PubMed ID: 9044076.
    Abstract:
    BACKGROUND AND AIMS OF THE STUDY: Mitral annuloplasty has long been considered as the basic procedure for mitral regurgitation (MR). However, it is increasingly advisable to avoid foreign material and to use a method that provides greater adjustment for control of annular size. In this study, the semicircular suture annuloplasty (Paneth-Burr method) was evaluated for its efficacy and durability; the optimum size of the mitral annulus was also assessed. METHODS: The Paneth-Burr method was modified using Gore-Tex suture, a crossing suture technique, and obturator for temporary annulus size adjustment. Between 1992 and 1994, 21 patients with an average age of 45 years (range: 8 months to 67 years) underwent such annuloplasty combined with various valvuloplasties and chordal reconstruction. The etiologies were degenerative in 11 patients, congenital in five, ischemic in three and endocarditis in two. RESULTS: Mean MR grades (0-4) decreased from 3.3 +/- 0.6 to 0.2 +/- 0.4 after surgery. At an average 24 months follow up (range: 12 to 41 months), 16 patients showed no increase in MR, but five showed increased MR grades (all grade 3 or less: three grade 3 and two grade 2). Only one patient with ischemic MR required reoperation. Patients with increased MR grade during follow up had a larger intraoperative annular size (> 90% of normal), while those with < 90% of normal mitral annular size showed no increase in MR beyond grade 2, except one with ischemic etiology. CONCLUSIONS: A measured semicircular suture annuloplasty appears to be useful for MR, with acceptable efficacy and durability. In addition, the annular size to be adjusted at surgery is proposed to be < or = 90% of normal mitral annular diameter.
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