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Published on: July 18, 2014
DeBakey Surgitool mechanical heart valve prosthesis, explanted at 32 years
Jagdish Butany1, Ather Naseemuddin, Vidhya Nair
1Department of Pathology, University Health Network, Toronto General Hospital, 200 Elizabeth Street E4-301, Toronto, ON, Canada. jagdish.butany@uhn.on.ca
Insights
This study highlights the exceptional 32-year durability of a DeBakey Surgitool mechanical heart valve. The explanted valve demonstrated longevity, with dysfunction caused by tissue overgrowth, not component failure, showcasing prosthetic valve durability.
Area of Science:
- Cardiovascular Surgery
- Biomaterials Science
- Medical Device Engineering
Background:
- Mechanical heart valve prostheses aim for lifelong durability but can face complications like patient non-compliance, infection, and hemorrhage.
- The DeBakey Surgitool mechanical heart valve was pioneering, incorporating Pyrolyte components for enhanced performance.
Observation:
- A DeBakey Surgitool mechanical heart valve, implanted for 32 years, was explanted due to dysfunction.
- The explantation was necessitated by tissue overgrowth, not by failure of the valve's mechanical components or materials.
Findings:
- The explanted mechanical heart valve demonstrated remarkable long-term durability over three decades of function.
- The primary cause of dysfunction was biological (tissue overgrowth), independent of the prosthetic device's material integrity.
Implications:
- This case underscores the potential for excellent long-term performance of mechanical heart valves with proper patient management.
- The findings support the use of durable mechanical heart valve prostheses, emphasizing the importance of patient compliance in preventing complications.
Abstract:
Contemporary mechanical heart value prostheses are expected to last "just about forever" or the patient's lifeline. They do however still suffer complications, some of which necessitate premature explantation. Complications today are mainly related to patient compliance with anticoagulant medication, infection and hemorrhage. The DeBakey Surgitool mechanical heart valve was the first such device to have Pyrolyte components. We present a DeBakey surgitool mechanical heart valve that was in place for 32 years! It was explanted for dysfunction related to tissue overgrowth and not to its related components. With good patient compliance, this mechanical heart valve prosthesis is an example of good prosthetic valve durability.
