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  • Title: St. Jude Medical prosthetic aortic valve malfunction due to pannus formation.
    Author: Naito Y, Hachida M, Shimabukuro T, Nonoyama M, Endo M, Koyanagi H.
    Journal: Jpn J Thorac Cardiovasc Surg; 2000 Nov; 48(11):739-41. PubMed ID: 11144097.
    Abstract:
    According to the literature, the incidence of pannus formation with the St. Jude Medical prosthetic aortic valve has been reported at 0.03% and 0.14% (per patient-year), with no case report of St. Jude Medical prosthetic aortic valve malfunction due to pannus formation. Between 1980 and 1999, 1,186 patients underwent aortic valve replacement at our institute. We encountered 2 aortic valve malfunctions due to pannus formation, including the case of a 53-year-old woman who suffered a St. Jude medical aortic valve malfunction 13 years after the initial operation. A second aortic valve replacement was successful and the postoperative course was uneventful. The possibility of pannus formation on St. Jude Medical aortic valves must thus be considered and its mechanism clarified.
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