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Related Experiment Videos

Six years' experience with the Omnicarbon valve prosthesis

M Otaki1, N Kitamura

  • 1Osaka National Hospital, Japan.

Cardiovascular Surgery (London, England)
|October 1, 1993
PubMed
Summary

The Omnicarbon valve shows good clinical outcomes and low complication rates in valve replacement surgery. This study found a 6-year survival rate of 86.2%, with few valve-related issues in aortic and mitral valve replacements.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science

Background:

  • Mechanical heart valves are crucial for treating valvular heart disease.
  • The Omnicarbon valve is a specific type of mechanical prosthesis used in cardiac surgery.

Purpose of the Study:

  • To evaluate the long-term clinical performance and safety of the Omnicarbon valve.
  • To assess valve-related complications and survival rates following aortic valve replacement (AVR) and mitral valve replacement (MVR).

Main Methods:

  • A retrospective analysis of 90 patients undergoing isolated Omnicarbon valve replacement (53 AVR, 37 MVR) between 1985 and 1990.
  • Cumulative follow-up of 320 patient-years, with a mean follow-up of 3.7 years.
  • Actuarial analysis of survival and freedom from valve-related complications.

Main Results:

  • Operative mortality was 3.3%.
  • The 6-year actuarial survival rate was 86.2% (98.8% for AVR, 82.1% for MVR).
  • Low incidence of valve-related complications: thromboembolism (0.63%/patient-year), prosthetic valve endocarditis (0.94%/patient-year), and paravalvular leak (0.31%/patient-year). No anticoagulant-related hemorrhage, hemolysis, or structural failure.
  • The 6-year actuarial rate of freedom from all valve-related complications was 89.2% (98.6% for AVR, 86.4% for MVR).

Conclusions:

  • The Omnicarbon valve demonstrates favorable long-term clinical results.
  • It is associated with a low incidence of valve-related complications and good survival rates in both aortic and mitral positions.
  • The valve appears to be a safe and effective option for valve replacement surgery.

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