Russo R, Oreto G, Compostella L, Fiore D, Fasoli G
G Ital Cardiol. 1978;8(2):166-71.
Phonocardiographic examination was carried out in 40 patients who had undergone to aortic valve replacement with the Björk-Shiley prothesis. The regular function of the prothesis was evaluated on the basis of the physical, radiological and electrocardiographic data. In the majority of the cases the first sound was slight. The prosthetic closing sound was made of two components (a2, A2) and the opening sound by one or more components (C1, C2, C3). A sistolic aortic murmur was always present, and a diastolic murmur has been found in 20% of the cases.
对40例接受了Björk-Shiley人工主动脉瓣置换术的患者进行了心音图检查。根据体格检查、放射学检查和心电图数据评估人工瓣膜的正常功能。在大多数病例中，第一心音轻微。人工瓣膜关闭音由两个成分（a2、A2）组成，开放音由一个或多个成分（C1、C2、C3）组成。总是存在收缩期主动脉杂音，20%的病例中发现有舒张期杂音。
