American University of Beirut Medical Center, Beirut, Lebanon.
Int J Artif Organs. 2022 Feb;45(2):152-154. doi: 10.1177/0391398821990667. Epub 2021 Feb 14.
The use of left ventricular assist device (LVAD) in patients with mechanical aortic valves may result in thromboembolic events due to blood stasis around the valve and intermittent valve opening. Mechanical aortic valves encountered during LVAD implantation are managed by replacement with a tissue valve, or closure of the valve with a patch. Closure of the valve carries the risk of sudden death in cases of LVAD stoppage. Replacing the whole mechanical valve conduit is time consuming and carries a significant risk of bleeding and right ventricular (RV) failure. We describe an alternative technique of replacing a mechanical aortic valve by breaking its inner leaflets and sewing a tissue valve on top of the mechanical valve ring.
在使用左心室辅助装置 (LVAD) 的患者中，由于瓣膜周围血液淤滞和间歇性瓣膜开启，可能会发生血栓栓塞事件。在 LVAD 植入过程中遇到的机械主动脉瓣通过更换组织瓣或用补片关闭瓣膜来处理。如果 LVAD 停止工作，瓣膜关闭会导致突然死亡的风险。更换整个机械瓣膜管道既耗时又有大量出血和右心室 (RV) 衰竭的风险。我们描述了一种替代技术，通过折断机械主动脉瓣的内叶并在机械瓣环上缝合一个组织瓣来更换机械主动脉瓣。
