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Mitral valve surgery in patients with poor left ventricular function.

M Rothenburger1, A Rukosujew, D Hammel

  • 1Department of Thoracic and Cardiovascular Surgery, University Hospital Muenster, Germany. markus.rothenburger@thgms.uni-muenster.de

The Thoracic and Cardiovascular Surgeon
|November 29, 2002
PubMed
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Mitral valve surgery can improve heart function and reduce heart failure in patients with cardiomyopathy. This high-risk surgery offers a viable alternative to heart transplantation for select individuals.

Area of Science:

  • Cardiovascular Surgery
  • Cardiology

Background:

  • Secondary mitral regurgitation (MR) in cardiomyopathy often leads to poor surgical outcomes.
  • Severe left ventricular dysfunction is a key indicator of poor prognosis in these patients.

Purpose of the Study:

  • To assess the outcomes of mitral valve surgery in patients with severe left ventricular dysfunction.
  • To evaluate the impact of mitral valve surgery on left ventricular function and heart failure severity.

Main Methods:

  • 31 patients with MR and ejection fraction <30% underwent isolated mitral valve repair (n=16) or replacement (n=15).
  • All patients received maximal medical therapy; follow-up included echocardiography, ECG, and chest X-ray.
  • Mean follow-up duration was 39 months for patients with NYHA class III/IV heart failure.

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Main Results:

  • 1-, 2-, and 5-year survival rates were 91%, 84%, and 77%, respectively.
  • Ejection fraction improved significantly (23.1% to 36%; p < 0.02), and NYHA class improved (3.3 to 2.1; p < 0.01).
  • Freedom from heart failure readmission was 85%, 79%, and 68% at 1, 2, and 5 years.

Conclusions:

  • Mitral valve surgery enhances left ventricular function and alleviates heart failure in MR patients with cardiomyopathy.
  • High-risk mitral valve surgery can be a suitable alternative to heart transplantation in carefully selected patients.