Disc Immobilization of Björk-Shiley and Medtronic Hall Valves during and Immediately after Valve Replacement

Ganesh P. Pai, Robert G. Ellison, Joseph W. Rubin, H. V. Moore, Manjeshwar Vinayak Kamath

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

During the last fourteen years, 377 unileaflet tilting-disc prosthetic valves (Björk-Shiley and Medtronic Hall) have been used for single or multiple valve replacements with and without concomitant coronary artery bypass grafting. In the past five years, five instances of disc immobilization (three in the mitral and two in the aortic position) occurred either at the time of weaning from cardiopulmonary bypass or immediately thereafter. When the implanted site of the prosthetic valve was the mitral position, reexploration in 2 patients revealed chordal remnants in the subannular area stuck between the disc occluder and the valve ring, thereby immobilizing the disc. In the third instance, the free movement of the disc was impeded by the left ventricular myocardium. In the aortic position, an unraveled suture impacted between the disc occluder and the valve ring immobilized the disc in 1 patient. In the other patient, the cause of the malfunction could not be determined at the time of reexploration. The 1 death among these 5 patients was directly related to the malfunction of the prosthesis. The mechanism, recognition, treatment, and prevention of this catastrophic malfunction of tilting-disc valves are discussed.

Original languageEnglish (US)
Pages (from-to)73-76
Number of pages4
JournalAnnals of Thoracic Surgery
Volume44
Issue number1
DOIs
StatePublished - Jan 1 1987

Fingerprint

Immobilization
Cardiopulmonary Bypass
Mitral Valve
Coronary Artery Bypass
Sutures
Prostheses and Implants
Myocardium
Therapeutics

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

Cite this

Disc Immobilization of Björk-Shiley and Medtronic Hall Valves during and Immediately after Valve Replacement. / Pai, Ganesh P.; Ellison, Robert G.; Rubin, Joseph W.; Moore, H. V.; Kamath, Manjeshwar Vinayak.

In: Annals of Thoracic Surgery, Vol. 44, No. 1, 01.01.1987, p. 73-76.

Research output: Contribution to journalArticle

Pai, Ganesh P. ; Ellison, Robert G. ; Rubin, Joseph W. ; Moore, H. V. ; Kamath, Manjeshwar Vinayak. / Disc Immobilization of Björk-Shiley and Medtronic Hall Valves during and Immediately after Valve Replacement. In: Annals of Thoracic Surgery. 1987 ; Vol. 44, No. 1. pp. 73-76.
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