Cardiac Electrophysiology Section, Division of Cardiology, Duke University Medical Center, Durham, North Carolina, USA.
J Cardiovasc Electrophysiol. 2011 Oct;22(10):1174-8. doi: 10.1111/j.1540-8167.2011.02034.x. Epub 2011 Mar 4.
Use of VSTAP to Facilitate Hemodynamic Support. The ablation of hemodynamically unstable ventricular tachycardia (VT) is challenging and frequently requires alternative mapping techniques or the use of percutaneous mechanical support devices. Loss of atrioventricular synchrony contributes to hemodynamic compromise during VT. In order to facilitate successful mapping and ablation of unstable VT, we employed ventricular synchronized triggered atrial pacing (VSTAP) at 50% of the RR interval. In this case, triggered atrial pacing permitted activation mapping and, subsequently, successful ablation of the patient's unstable VT. Thus, VSTAP is a readily available and noninvasive technique that may provide adequate hemodynamic support during catheter ablation of unstable VT.
使用 VSTAP 辅助血液动力学支持。血流动力学不稳定的室性心动过速（VT）的消融具有挑战性，通常需要替代的映射技术或使用经皮机械支持设备。房室同步丧失会导致 VT 期间的血液动力学受损。为了促进不稳定 VT 的成功映射和消融，我们以 RR 间隔的 50%使用心室同步触发的心房起搏（VSTAP）。在这种情况下，触发的心房起搏允许进行激活映射，随后成功消融了患者的不稳定 VT。因此，VSTAP 是一种现成的、非侵入性的技术，可在不稳定 VT 的导管消融过程中提供足够的血液动力学支持。
