title: Structural valve deterioration after aortic valve replacement with Medtronic freestyle stentless porcine aortic root bioprostheses.
abstract: The Medtronic freestyle aortic root bioprosthesis (Medtronic, Inc., Minneapolis, MN, USA) is a stentless valve with an effective orifice area that is larger than that observed on other bioprostheses. However, there have been sporadic reports of structural valve deterioration (SVD), such as aortic root wall rupture, leaflet tearing, and pseudoaneurysm formation. We report five cases of SVD of freestyle aortic root bioprostheses.
authors.affiliation: Department of Cardiovascular Surgery, Kurashiki Central Hospital, Kurashiki, Okayama, Japan.
authors.forename: Hidefumi
authors.initials: H
authors.lastname: Nishida
authors.forename: Tatsuhiko
authors.initials: T
authors.lastname: Komiya
authors.forename: Genichi
authors.initials: G
authors.lastname: Sakaguchi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Shimamoto
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery*; D001705:Bioprosthesis; D005260:Female; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome