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The Annals of Thoracic Surgery, Vol 39, 277-279, Copyright © 1985 by The Society of Thoracic Surgeons
JD Rumisek, RA Albus and JS Clarke
Mycobacterium chelonei contamination of the Hancock porcine heart valve
prosthesis occurred in a few lots manufactured between October, 1975, and
August, 1976. The unimplanted valves were recalled, but a number of valves
in their cohort had already been implanted. This report describes a patient
with Mycobacterium chelonei endocarditis of a Hancock bioprosthetic heart
valve belonging to this cohort that occurred three years after
implantation. We are aware of four similar instances of mycobacterial
endocarditis and believe that these latent infections originated either
from surgical inoculation or from implantation of a contaminated valve
prosthesis. Other Hancock valves manufactured between October, 1975, and
August, 1976, may harbor latent M. chelonei. We believe early valve
replacement with aggressive combination antibacterial and antituberculosis
therapy is essential for control of atypical mycobacterial valve
endocarditis.
ARTICLES
Late Mycobacterium chelonei bioprosthetic valve endocarditis: activation of implanted contaminant?
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