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Related Experiment Videos

Re-operation for aortic and mitral prosthetic dysfunctions.

T K Kaul1, M R Sastry, J L Mercer

  • 1Cardiothoracic Surgery, Broadgreen Hospital, Liverpool, U.K.

Life Support Systems : the Journal of the European Society for Artificial Organs
|January 1, 1985
PubMed
Summary

Mechanical prostheses, particularly Bjork Shiley valves, showed low re-operation and endocarditis rates. However, clotted Bjork Shiley prostheses presented high risks, including rare strut fractures and disc sticking, despite nil early deaths with cardioplegic protection.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Medical Device Engineering

Background:

  • Mechanical prosthetic valves are crucial in cardiac surgery.
  • Bjork Shiley prostheses have been widely used but present specific complications.
  • Minimizing re-operation and prosthetic valve endocarditis is a key goal.

Purpose of the Study:

  • To evaluate the long-term outcomes of mechanical prosthetic valve implantation.
  • To assess the incidence of re-operation and prosthetic valve endocarditis.
  • To report on specific complications associated with Bjork Shiley prostheses.

Main Methods:

  • Retrospective analysis of patients receiving mechanical prosthetic valves.
  • Predominant use of Bjork Shiley prostheses in the primary implantation series.

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  • Monitoring for prosthetic dysfunction, re-operation, endocarditis, and operative mortality.

    • Main Results:

    • Low overall incidence of re-operation and prosthetic valve endocarditis.
    • Bjork Shiley prostheses showed fewer dysfunctions but high risk with clotted valves.
    • Observed rare cases of strut fracture and disc sticking with Bjork Shiley valves.
    • Nil early deaths achieved with cardioplegic protection.

    Conclusions:

    • Mechanical prostheses, especially Bjork Shiley, offer low re-operation and endocarditis rates.
    • Clotted Bjork Shiley prostheses carry significant risks, including mechanical failure.
    • Cardioplegic protection eliminated early deaths; synthetic pericardium can reduce bleeding.