The significance of intermittent regurgitation in aortic valve prostheses.
D000328:Adult; D001022:Aortic Valve Insufficiency / Q000209:etiology* / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged