[The recent developments and problems of heart valve prosthesis].
D001705:Bioprosthesis / Q000592:standards; D004697:Endocarditis, Bacterial / Q000209:etiology; D006350:Heart Valve Prosthesis / Q000592:standards; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D013923:Thromboembolism / Q000517:prevention & control