title: A worn Björk-Shiley prosthetic valve without valve dysfunction observed during ascending aortic replacement.
abstract: The implanted first-generation Björk-Shiley valve in our patient was functioning well before aortic surgery, but we replaced the valve because we confirmed disc erosion 39 years after implantation during the surgery. We judged that the implanted valve was no longer capable of maintaining the patient's life.
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Misao
authors.initials: M
authors.lastname: Komi
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Sugaya
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Akutsu
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Sato
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Kaminishi
authors.affiliation: Division of Cardiovascular Surgery, Jichi Medical University Shimotsuke, Tochigi, Japan.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Misawa
keywords: Acute aortic dissection; Björk–Shiley valve; aortic root replacement; structural mechanical valve dysfunction