title: [Pseudoaneurysm Formation after Aortic Root Replacement Using Freestyle Porcine Bioprosthesis].
abstract: We report a case of pseudoaneurysm formation after implantation of Medtronic Freestyle stentless bioprosthesis with a full root technique. A 65-year-old man previously underwent aortic root replacement with a Freestyle bioprosthesis. Ten years after the initial operation, pseudoaneurysm of the aortic root with a diameter of 6 cm was observed by computed tomography. At the reoperation, there was no sign of infective endocarditis, and the pseudoaneurysm was found to originate from the ruptured left and noncoronary sinuses. The aortic root was successfully reconstructed with a composite graft bearing a stented bioprosthesis. Although Freestyle bioprosthesis has several advantages over conventional stented valves, close observation should be mandatory to prevent this potentially catastrophic complication.
authors.affiliation: Second Department of Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan.
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Uchida
authors.forename: Azumi
authors.initials: A
authors.lastname: Hamasaki
authors.forename: Atsushi
authors.initials: A
authors.lastname: Yamashita
authors.forename: Ken
authors.initials: K
authors.lastname: Nakamura
authors.forename: Jun
authors.initials: J
authors.lastname: Hayashi
authors.forename: Satoko
authors.initials: S
authors.lastname: Funata
authors.forename: Seigo
authors.initials: S
authors.lastname: Gomi
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Sadahiro
mesh_terms: D000368:Aged; D017541:Aneurysm, False / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D012086:Reoperation; D013552:Swine; D014057:Tomography, X-Ray Computed