de la Rocha A G, Plume S K, Baird R J
Can Med Assoc J. 1977 May 21;116(10):1158-60.
Thrombotic malfunction of a Björk-Shiley aortic valve prosthesis occurred in three patients 6 to 16 months postoperatively. None of the patients had been taking anticoagulants. Although the presentation was acute, prodromal symptoms could be identified retrospectively in two of the patients. Two patients survived thrombectomy. Postoperative anticoagulant therapy is recommended in patients with these prostheses despite factors that may make such therapy riskier in specific patients. Attention to the character of murmurs and of the closure sound of the prosthetic valve must be part of the routine follow-up. In the emergency situation, when delay must be avoided, catheterization and angiography are unnecessary. The operative approach consists of complete thrombectomy without replacement of the valve or any of its components unless there is obvious periprosthetic leak or prosthetic wear.
三例患者在接受 Björk-Shiley 主动脉瓣假体植入术后 6 至 16 个月出现血栓形成故障。这些患者均未服用抗凝剂。尽管症状表现为急性，但其中两名患者的前驱症状可通过回顾性分析得以识别。两名患者在接受血栓切除术后存活。尽管某些因素可能使特定患者进行此类治疗的风险更高，但仍建议对植入这些假体的患者进行术后抗凝治疗。对人工瓣膜杂音特征和关闭音的关注必须成为常规随访的一部分。在紧急情况下，为避免延误，无需进行心导管检查和血管造影。手术方法包括彻底的血栓切除术，无需更换瓣膜或其任何组件，除非存在明显的人工瓣膜周漏或人工瓣膜磨损。
