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Analysis of Mechanical Prostheses Excised from the Aortic Valve Position

  • William C Roberts
    Correspondence
    Corresponding Author: William C. Roberts, MD, Baylor Scott & White Heart and Vascular Institute, 621 N. Hall Street, Suite H-030, Dallas, Texas 75226, (214) 820-7911 Office; (214) 820-7533 Fax
    Affiliations
    Baylor Scott & White Heart and Vascular Institute, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas

    Departments of Internal Medicine (Division of Cardiology), Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas

    Departments of Pathology, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas
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  • Yusuf M Salam
    Affiliations
    Baylor Scott & White Heart and Vascular Institute, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas
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      Described herein are certain clinical and morphologic findings in 33 patients who had their dysfunctioning native aortic valves replaced with a mechanical prosthesis and 4 to 302 months (mean 127) later had the mechanical prosthesis explanted because of developing prosthetic stenosis or regurgitation because of thrombus forming on a metallic disc, pannus on the cloth ring with overhanging the prosthetic orifice, or because of parabasilar regurgitation. Of the 33 patients, 25 were not infected and 8 were infected. At follow-up at least 23 of the 25 patients without infection and 7 of the 8 patients with prosthetic infection survived >1 year after the prosthetic valve explantation.
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