Chapman J V, Bierig S M, Trask R V
Department of Cardiovascular Ultrasound, Memorial Medical Center, Springfield, Illinois 62781-1604, USA.
J Am Soc Echocardiogr. 1998 May;11(5):478-9. doi: 10.1016/s0894-7317(98)70028-8.
Thrombotic obstruction of mechanical prosthetic valves is a frequently encountered cause of prosthetic valve dysfunction, which can result in stenosis and regurgitation. We present a case of thrombotic obstruction of a bileaflet mechanical aortic valve prosthesis that resulted in severe stenosis and regurgitation. Considering the known risk factors associated with both surgical and thrombolytic treatments, a decision was made to use tissue plasminogen activator therapy to relieve the burden of the thrombotic valvular obstruction. In this case review, we use continuous wave Doppler to demonstrate recovery of normal valve function despite suboptimal two-dimensional imaging.
机械人工瓣膜的血栓形成梗阻是人工瓣膜功能障碍常见的原因，可导致狭窄和反流。我们报告一例双叶机械主动脉瓣人工瓣膜血栓形成梗阻导致严重狭窄和反流的病例。考虑到手术和溶栓治疗相关的已知风险因素，决定使用组织型纤溶酶原激活剂治疗以减轻血栓性瓣膜梗阻的负担。在本病例回顾中，尽管二维成像欠佳，我们仍使用连续波多普勒来证明瓣膜功能恢复正常。
