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A worn Björk-Shiley prosthetic valve without valve dysfunction observed during ascending aortic replacement.

Misao Komi1, Akira Sugaya1, Hirohiko Akutsu1

  • 1Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.

Clinical Case Reports
|January 24, 2015
PubMed
Summary

A first-generation Björk-Shiley valve functioned well for 39 years before disc erosion was discovered during aortic surgery. The valve was replaced, as it was no longer life-sustaining.

Keywords:
Acute aortic dissectionBjörk–Shiley valveaortic root replacementstructural mechanical valve dysfunction

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Medical Device Engineering

Background:

  • The Björk-Shiley mechanical heart valve was a widely used prosthetic device.
  • Long-term durability of implanted cardiac valves is a critical concern in cardiovascular surgery.

Observation:

  • A first-generation Björk-Shiley valve, implanted 39 years prior, was noted to be functioning adequately before aortic surgery.
  • Intraoperative examination revealed significant disc erosion of the Björk-Shiley valve.

Findings:

  • Disc erosion in a first-generation Björk-Shiley valve after 39 years of function.
  • The eroded valve was deemed incapable of sustaining the patient's life, necessitating replacement.

Implications:

  • This case highlights the potential for late-stage mechanical failure in older prosthetic heart valves.
  • Understanding long-term device performance is crucial for managing patients with implanted cardiac devices.
  • Highlights the importance of device surveillance and timely intervention in cardiovascular medicine.