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Related Experiment Videos

The intact bioprosthesis: the first 4 years.

M A Williams1

  • 1Department of Cardio-thoracic Surgery, Provincial Hospital, Port Elizabeth, South Africa.

The Annals of Thoracic Surgery
|September 1, 1989
PubMed
Summary

The Intact porcine bioprosthesis shows promising durability, with encouraging hemodynamic results in patients over 20 years old. However, younger patients (<20 years) experienced calcific issues requiring explantation.

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Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Prosthetic Valve Technology

Background:

  • The Intact porcine bioprosthesis, introduced in 1984, features innovations to enhance durability and reduce calcification.
  • Bioprosthetic heart valves are crucial for treating valvular heart disease, but long-term durability remains a challenge.

Purpose of the Study:

  • To evaluate the clinical performance and durability of the Intact porcine bioprosthesis.
  • To assess the safety and efficacy of the valve across different patient age groups and implantation positions.

Main Methods:

  • A retrospective analysis of 221 Intact porcine bioprostheses implanted in 200 patients between October 1984 and March 1988.
  • Data collection included implantation position, patient demographics, hospital mortality, follow-up duration, and explantation reasons.
  • Actuarial survival rates and hemodynamic assessments via postoperative catheterization were analyzed.

Main Results:

  • Overall hospital mortality was 4.5%. Actuarial survival at 48 months was 83%.
  • In patients older than 20 years, satisfactory hemodynamics were observed, deeming results encouraging.
  • Six valves were explanted in patients under 20 years due to calcific prosthetic stenosis.

Conclusions:

  • The Intact porcine bioprosthesis demonstrates encouraging outcomes and satisfactory hemodynamics in adult patients (>20 years).
  • Further investigation is needed to address calcification issues and explantation rates in younger patient populations (<20 years).
  • The valve's design innovations show potential for improved durability in specific patient demographics.

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