Bhattacharya Sanjoy, Saba Samir
Cardiac Electrohysiology Section, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA.
Pacing Clin Electrophysiol. 2011 Oct;34(10):e90-3. doi: 10.1111/j.1540-8159.2010.02812.x. Epub 2010 Jun 21.
Pacing and entrainment maneuvers are essential for establishing the mechanism of supraventricular tachycardia (SVT), but may fail to do so if the SVT terminates or if pacing results in atrioventricular (AV) dissociation as opposed to entrainment of the arrhythmia. We present an unusual case of typical AV nodal reentrant tachycardia (AVNRT) with high degree AV block in which the diagnosis was confirmed using a novel maneuver consisting of simultaneous atrial and ventricular (A + V) pacing. The reproducible response to A + V pacing at varying cycle lengths established the diagnosis of AVNRT in this case.
起搏和拖带操作对于确定室上性心动过速（SVT）的机制至关重要，但如果SVT终止，或者起搏导致房室（AV）分离而非心律失常的拖带，则可能无法确定该机制。我们报告了一例不寻常的典型房室结折返性心动过速（AVNRT）合并高度房室传导阻滞的病例，其中通过一种由心房和心室同时起搏（A + V起搏）组成的新操作确诊。在不同周期长度下对A + V起搏的可重复反应确立了该病例中AVNRT的诊断。
