St. Jude Medical, Sylmar, California, USA.
J Cardiovasc Electrophysiol. 2010 Feb;21(2):219-22. doi: 10.1111/j.1540-8167.2009.01663.x. Epub 2009 Dec 15.
Cardiac resynchronization therapy (CRT) restores synchrony in heart failure patients. However, a significant proportion of patients implanted with CRT devices do not realize any benefit from CRT. Placing a left ventricular (LV) lead at the sites of electrical or mechanical delay has been advocated to maximize response to CRT, but there is currently no technique described to measure mechanical delay in real-time. We describe a novel technique that can be used intraoperatively to assess mechanical and electrical activation of the coronary sinus for guidance of LV pacing site optimization during CRT implantation.
心脏再同步治疗（CRT）可恢复心力衰竭患者的心脏同步性。然而，相当一部分植入 CRT 设备的患者并未从中获益。主张将左心室（LV）导线放置在电或机械延迟部位，以最大限度地提高 CRT 的反应，但目前尚无描述实时测量机械延迟的技术。我们描述了一种新的技术，可在术中用于评估冠状窦的机械和电激活，以指导 CRT 植入期间 LV 起搏部位的优化。
