Scott S M, Sethi G K, Paulson D M, Takaro T
Ann Thorac Surg. 1978 Apr;25(4):382-4. doi: 10.1016/s0003-4975(10)63564-3.
Recent reports of cage wear occurring in DeBakey-Surgitool aortic valve prostheses prompted us to examine with image intensification all our patients who have had this type of prosthesis implanted. One patient, who was asymptomatic, was discovered to have a prosthesis with two fractured struts. This patient's prosthetic valve was replaced successfully with a stented porcine heterograft prosthesis. Including the valve removed from this patient, 8 DeBakey-Surgitool aortic valves with structural defects have been reported to the manufacturer. In the absence of a catastrophic event, patients with valves having fractured or worn struts may be totally asymptomatic, and routine periodic roentgenographic examination may be the only way of detecting strut wear or fracture.
最近有报告称，德巴基-外科手术器械公司生产的主动脉瓣假体出现了笼架磨损情况，这促使我们利用影像增强技术对所有植入了此类假体的患者进行检查。有一名无症状患者被发现其假体有两根支柱断裂。该患者的人工瓣膜成功地被一个带支架的猪异种移植瓣膜所替换。包括从该患者身上取出的瓣膜在内，已有8个存在结构缺陷的德巴基-外科手术器械公司生产的主动脉瓣被报告给了制造商。在没有发生灾难性事件的情况下，瓣膜支柱发生断裂或磨损的患者可能完全没有症状，而常规的定期X线检查可能是检测支柱磨损或断裂的唯一方法。
