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Clinical course after mitral valve replacement.

S Rao1, V M Kurian, M Ghosh

  • 1Sree Chitra Tirunal Institute for Medical Sciences, Trivandrum.

Indian Heart Journal
|September 1, 1990
PubMed
Summary
This summary is machine-generated.

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Mitral valve replacement for rheumatic valvular disease shows significant long-term survival. Rheumatic heart disease patients experienced 70% survival at 10 years, with valve-related causes accounting for most late deaths.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Valvular Heart Disease

Background:

  • Rheumatic valvular disease necessitates surgical intervention, primarily mitral valve replacement.
  • Understanding long-term outcomes is crucial for patient management and surgical planning.

Purpose of the Study:

  • To evaluate the long-term survival and event-free survival rates following mitral valve replacement in patients with rheumatic valvular disease.

Main Methods:

  • A retrospective analysis of 250 patients undergoing mitral valve replacement for rheumatic valvular disease between 1979 and 1987.
  • Follow-up data was collected for a mean duration of 4.4 years, with a maximum of 10 years.
  • Actuarial survival and event-free survival rates were calculated based on patient class and time intervals.

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Main Results:

  • Early mortality varied by New York Heart Association (NYHA) functional class: 8.6% (Class II), 15.8% (Class III), and 31.9% (Class IV).
  • Actuarial survival rates at 3, 5, and 10 years were 93%, 87%, and 70%, respectively.
  • Event-free survival rates at 3, 5, and 10 years were 77%, 63%, and 57%, respectively. Late deaths occurred in 9.5% of patients, with 66.6% attributed to valve-related causes.

Conclusions:

  • Mitral valve replacement offers substantial long-term survival for patients with rheumatic valvular disease, even in advanced functional classes.
  • Valve-related complications represent a significant cause of late mortality, highlighting the importance of ongoing monitoring and management.