title: [Aortic Valve Replacement of Quadricuspid Valve with Regurgitation].
abstract: Congenital quadricuspid aortic valve is a very rare malformation. In most cases it has been found incidentally at aortic valve surgery or at autopsy. It frequently causes aortic regurgitation, which may become manifest in adulthood and require surgical treatment. We reported 4 cases of aortic regurgitation with quadricuspid aortic valve. In all cases, aortic valve replacement was preformed with prosthetic valve, and their postoperative courses were uneventful. Two were Hurwitz's classification type b, one was type a and the last patient was type c. Although quadricuspid aortic valve is a rare anomaly, its potential for severe valve failure in adulthood should be kept in mind.
authors.affiliation: Department of Cardiac Surgery, Nagoya University, Nagoya, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Yagami
authors.forename: Hideki
authors.initials: H
authors.lastname: Oshima
authors.forename: Yuji
authors.initials: Y
authors.lastname: Narita
authors.forename: Tomonobu
authors.initials: T
authors.lastname: Abe
authors.forename: Yoshimori
authors.initials: Y
authors.lastname: Araki
authors.forename: Kazurou
authors.initials: K
authors.lastname: Fujimoto
authors.forename: Masato
authors.initials: M
authors.lastname: Mutsuga
authors.forename: Sachie
authors.initials: S
authors.lastname: Terazawa
authors.forename: Hideki
authors.initials: H
authors.lastname: Ito
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Kuwabara
authors.forename: Akihiko
authors.initials: A
authors.lastname: Usui
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000002:abnormalities* / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000601:surgery; D005260:Female; D006333:Heart Failure / Q000209:etiology; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D008875:Middle Aged