[Prosthetic aortic valve dysfunction due to projection of the left ventricular outflow septum].
Prosthetic valve dysfunction at the aortic position is generally caused by either pannus overgrowth or thrombus or both. We encountered a case with prosthetic valve dysfunction who had undergone an aortic valve replacement 4 years and 5 months before, receiving SJM-HP 21 mm. During the initial operation, a prosthetic valve was implanted parallel to the ventricular septum and slightly up toward the non-coronary sinus (Olin technique) because of a narrow aortic annulus. Before re-do surgery, Doppler echocardiography and cinefluoroscopy showed an incomplete opening of 1 leaflet of the prosthetic valve. At the re-do operation, it was observed that the movement of the anterior leaflet of the prosthetic valve was disturbed by the projecting ventricular septum. After the projecting ventricular septum was excised, SJM-regent 17 mm valve was implanted perpendicular to the septum at the supra-annular position. Postoperative course was uneventful. The postoperative aortic peak pressure gradient decreased to 25 mmHg by Doppler echocardiography.
Inoue
S
S
Department of Cardiovascular Surgery, Shimane Prefectural Central Hospital, Izumo, Japan.
Yamauchi
M
M
Kitano
T
T
Itohara
T
T
Nohno
Y
Y
Nakayama
K
K
D000368:Aged; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D005260:Female; D006346:Heart Septum / Q000601:surgery; D019918:Heart Valve Prosthesis Implantation / Q000379:methods; D006352:Heart Ventricles / Q000601:surgery; D006801:Humans; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome