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Mitral valve replacement versus annuloplasty for treating severe functional mitral regurgitation

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Abstract

Objectives

To improve the clinical outcome of patients with severe functional mitral regurgitation (FMR) associated with ischemic cardiomyopathy (ICM), we compared the therapeutic efficacy of mitral annuloplasty (MAP) with that of mitral valve replacement (MVR).

Methods

In a retrospective observation 63 consecutive patients underwent mitral valve surgery for severe ICM–FMR from November 1999 to March 2012. All patients had severe FMR (regurgitant volume >60 ml/beat) with Carpentier type I and type IIIb disease. Mean RV was 74.0 ± 35.0 ml/beat and coaptation depth was 12.7 ± 3.0 mm. Twenty-six patients (41.3 %) were treated by MVR with sparing of the subvalvular apparatus and 37 (58.7 %) by MAP.

Results

Total in-hospital mortality was 6.3 %. Kaplan–Meier survival estimates at 1 and 5 years were 84.2 and 78.6 % in the MVR group and 82.6 and 71.6 % in the MAP group, with no significant difference between groups (p = 0.758). Freedom from major adverse cardiac and cerebrovascular events (MACCE) at 5 years was 66.9 % for patients treated by MVR and 64.1 % for those treated by MAP (p = 0.866). At the last follow-up visit, >grade II MR had recurred in 4 annuloplasty patients (10.8 %). In multivariate analysis, independent predictors of increased late death and MACCE were significantly associated with residual pulmonary hypertension (late death: odds ratio = 25.0, p = 0.0009; MACCE: odds ratio = 31.3, p = 0.0001).

Conclusions

Mitral valve replacement with sparing of the subvalvular apparatus is a safe and effective surgical alternative for patients with severe FMR.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Nishinomiya Watanabe Cardiovascular Center, 3-25, Ikeda-cho, Nishinomiya-shi, 662-0911, Japan

    Kazunori Yoshida

  2. Division of Cardiovascular Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan

    Kenji Okada, Shunsuke Miyahara, Atsushi Omura, Takeshi Inoue, Hitoshi Minami & Yutaka Okita

Authors
  1. Kazunori Yoshida
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  2. Kenji Okada
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  3. Shunsuke Miyahara
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  4. Atsushi Omura
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  5. Takeshi Inoue
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  6. Hitoshi Minami
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  7. Yutaka Okita
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Correspondence to Yutaka Okita.

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Yoshida, K., Okada, K., Miyahara, S. et al. Mitral valve replacement versus annuloplasty for treating severe functional mitral regurgitation. Gen Thorac Cardiovasc Surg 62, 38–47 (2014). https://doi.org/10.1007/s11748-013-0297-2

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  • DOI: https://doi.org/10.1007/s11748-013-0297-2

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