Pluth J R, Broadbent J C, Barnhorst D A, Danielson G K
Ann Thorac Surg. 1975 Sep;20(3):239-48. doi: 10.1016/s0003-4975(10)64215-4.
From February, 1971, through February, 1974, heart valves of 510 patients were replaced with cloth-covered Braunwald-Cutter prostheses. The data indicate that cloth encapsulation of the prosthetic cage is associated with a reduction in thromboembolic complications, particularly for mitral valves. Cloth wear on the distal strut, however, is not prevented by use of a Silastic poppet and appears to be a typical finding in aortic valves recovered or inspected after 3 months. Excessive poppet wear has also been noted in the aortic position; poppet embolization has occurred on 2 occasions, and a third patient was found, at the time of reoperation for periprosthetic leak, to have opppet wear sufficient to permit embolization. Although there have been no reports of clinical malfunction of the mitral prosthesis at the time of this writing, further long-term observation of these patients appears warranted.
从1971年2月至1974年2月，510例患者的心脏瓣膜被布覆盖的布劳恩瓦尔德-卡特人工瓣膜所置换。数据表明，人工瓣膜笼架的布包裹与血栓栓塞并发症的减少有关，特别是对于二尖瓣。然而，使用硅橡胶瓣膜不能防止远端支柱上的布磨损，这似乎是3个月后回收或检查的主动脉瓣中的典型发现。在主动脉位置也观察到瓣膜过度磨损；瓣膜栓塞发生过2次，在第3例患者因人工瓣膜周围漏血再次手术时，发现瓣膜磨损足以导致栓塞。虽然在撰写本文时没有二尖瓣人工瓣膜临床功能障碍的报告，但对这些患者进行进一步的长期观察似乎是必要的。
