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  • Title: [Malfunction of mitral and tricuspid Ionescu-Shiley pericardial xenografts].
    Author: Ochi M, Tanaka S, Ikeshita M, Osaka S, Nitta T, Terada K, Yamauchi H, Shoji T.
    Journal: Kyobu Geka; 1993 Feb; 46(2):178-81. PubMed ID: 8437386.
    Abstract:
    We report a case of the malfunction of Ionescu-Shiley pericardial xenografts (ISPX) in the mitral and tricuspid positions at 6 years after implantation. The patient underwent an emergency operation successfully despite his high age (75 years) and extremely poor preoperative condition. The valve extracted from the mitral position showed spontaneous disruption of the leaflet, while the tricuspid valve graft was entangled with the preserved native septal leaflet around the stents. This former complication is now widely recognized, but the latter one appears to be rare. Care should be taken in replacing the atrioventricular valve with a bioprosthesis when the native valve leaflets are not removed. Although the ISPX is no longer in clinical use, careful follow-up is mandatory in patients with this prosthesis especially when it was implanted in the mitral position.
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