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Mitral valve periprosthetic leakage: Anatomical observations in 135 patients from a multicentre study

Giuseppe De Cicco1, Claudio Russo, Antonella Moreo

  • 1Cardiac Surgery Unit, Civic Hospital, Brescia, Italy. giudeci@libero.it

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|November 4, 2006
PubMed
Abstract

Insights

Periprosthetic leakage (PPL) after mitral valve replacement (MVR) occurs more often in specific mitral valve annulus (MVA) regions. Understanding these anatomical locations can help prevent reoperations and improve patient outcomes.

Area of Science:

  • Cardiovascular Surgery
  • Cardiac Surgery
  • Medical Device Research

Background:

  • Prosthetic valve dysfunction following mitral valve replacement (MVR) often necessitates reoperation.
  • Periprosthetic leakage (PPL) is a frequent cause of reoperation after MVR.
  • Limited research has explored the relationship between anatomical factors and PPL, especially concerning bacterial involvement.

Purpose of the Study:

  • To investigate the specific anatomical locations of periprosthetic leakage (PPL) after mitral valve replacement (MVR).
  • To identify potential anatomical correlations with PPL occurrence in patients requiring reoperation.

Main Methods:

  • A multicentre retrospective study included 135 patients who underwent reoperation for PPL after MVR between 1985 and 2005.
  • The mitral valve annulus (MVA) was systematically analyzed in a clockwise manner to pinpoint leakage sites.

Main Results:

  • Hospital mortality was 3.7%.
  • PPL occurred more frequently in the antero-lateral (hour 5-6) and postero-medial (hour 10-11) segments of the MVA.
  • The risk of leakage was 2.8 times higher at hour 5-6 and 2.0 times higher at hour 10-11 compared to other MVA areas.

Conclusions:

  • Periprosthetic leakage (PPL) after MVR is more prevalent in the antero-lateral and postero-medial segments of the mitral valve annulus (MVA).
  • These findings suggest that specific anatomical and functional characteristics of these MVA regions may predispose to PPL.
  • Targeted attention to these sectors during suture placement in MVR may help reduce the incidence of PPL.

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