Macle Laurent, Shah Dipen C, Jaïs Pierre, Haïssaguerre Michel
Hôpital Cardiologique du Haut-Lévêque, Bordeaux-Pessac, France.
J Cardiovasc Electrophysiol. 2002 Mar;13(3):285-7. doi: 10.1046/j.1540-8167.2002.00285.x.
Mapping in a patient undergoing radiofrequency ablation for a left-sided concealed accessory pathway showed that the site with the shortest VA conduction time was in the great cardiac vein. Epicardial radiofrequency delivery at that site was successful. After ablation, a potential dissociated from both atrial and ventricular activity during sinus rhythm and atrial pacing was noted on the distal bipole of the ablation catheter. During incremental ventricular pacing, intermittent ventricular to potential conduction was observed. This indicates complete block at the atrial-accessory pathway interface and impaired conduction at the ventricular interface. This dissociated activity originating neither from the ventricle nor from the atria provides evidence of automatic accessory pathway activity.
对一名接受左侧隐匿性旁路射频消融术的患者进行标测显示，VA传导时间最短的部位位于大心脏静脉。在该部位进行心外膜射频消融成功。消融后，在消融导管的远端双极记录到窦性心律和心房起搏时与心房和心室活动均无关的电位。在递增心室起搏期间，观察到间歇性的心室至电位传导。这表明在心房-旁路接口处完全阻滞，在心室接口处传导受损。这种既不源自心室也不源自心房的分离活动提供了旁路自动活动的证据。
