Toyoda Y, Shida T, Wakita N, Ozaki N
Kobe Rhousai Hospital, Japan.
Kyobu Geka. 1998 Feb;51(2):135-7.
A 71-year-old man with aortic stenosis due to calcification successfully underwent aortic valve replacement with a 21-mm CarboMedics "Top Hat" supraannular prosthesis. We were able to implant a "Top Hat" valve one size larger than would have been possible using a standard bileaflet valve. The postoperative recovery was uneventful, and echocardiography showed a peak gradient of 23 mmHg for this prosthesis. The CarboMedics supraannular valve allowed a gain in size over standard prostheses, resulting in favorable hemodynamics. This valve may be useful in difficult or unsuitable cases to enlarge the narrow aortic valve ring, such as patients with severe calcification of aortic root, elderly patients with less activity, or patients who can tolerate only short cardiopulmonary bypass time due to cardiac dysfunction.
一名71岁因钙化导致主动脉瓣狭窄的男性成功接受了主动脉瓣置换术，使用的是21毫米CarboMedics“顶帽”瓣环上假体。我们能够植入比使用标准双叶瓣大一号的“顶帽”瓣。术后恢复顺利，超声心动图显示该假体的峰值梯度为23 mmHg。CarboMedics瓣环上瓣膜比标准假体尺寸更大，从而产生了良好的血流动力学。这种瓣膜在困难或不合适的病例中可能有用，例如主动脉根部严重钙化的患者、活动较少的老年患者或因心脏功能障碍只能耐受短时间体外循环的患者，可用于扩大狭窄的主动脉瓣环。
