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Left ventricular rupture following mitral valve replacement

M Otaki1, N Kitamura

  • 1Department of Cardiovascular Surgery, Osaka National Hospital, Japan.

Chest
|November 1, 1993
PubMed
Summary
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Left ventricular rupture after mitral valve replacement is rare but serious. Preserving the posterior leaflet during surgery may prevent this complication.

Area of Science:

  • Cardiac Surgery
  • Cardiovascular Research
  • Medical Complications

Background:

  • Left ventricular rupture is a rare but life-threatening complication following mitral valve replacement.
  • Understanding the incidence, timing, and mechanisms of rupture is crucial for improving patient outcomes.

Purpose of the Study:

  • To report the incidence and management of left ventricular rupture after mitral valve replacement.
  • To investigate the anatomical sites and potential causes of rupture.
  • To evaluate the effectiveness of a specific surgical technique in preventing rupture.

Main Methods:

  • Retrospective review of 6 patients who experienced left ventricular rupture post-mitral valve replacement over a 10-year period.
  • Analysis of rupture types (early, delayed, late), repair strategies, and patient outcomes.

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  • Autopsy review to determine the precise site of initial injury.

    • Main Results:

    • An overall incidence of 1.8% for left ventricular rupture was observed.
    • Ruptures occurred early (4 patients), delayed (1 patient), or late with false aneurysm (1 patient).
    • Surgical repair strategies varied, and all patients survived initial surgery, but two later died from complications.

    Conclusions:

    • Left ventricular rupture following mitral valve replacement, particularly Type 1, can originate from injuries to the mitral annulus.
    • Preserving the posterior leaflet with attached chordae in specific mitral valve conditions has been associated with zero instances of rupture since 1987.