Vol 3, No 2 (1996): Elektrofizjologia i Stymulacja Serca
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Published online: 2000-03-06
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Częstoskurcz "nie kończącej się pętli"

Grzegorz Wiktor Kamiński, Andrzej Krupienicz, Dariusz Michałkiewicz, Jerzy Adamus, Marian Cholewa
Elektrofizjologia i Stymulacja Serca 1996;3(2):178-180.


ELT is a complication in patients with DDD pulse generators and intact ventriculo– –atrial conduction. Retrograde atrial depolarizations are sensed and then, after the appropriate A–V delay, the pacemaker delivers a stimulus to the ventricle. Thus, the pacemaker provides the antegrade conduction pathway for the reentrant circuit and the intrinsic conduction system of the heart provides the retrograde pathway. It generates a repetitive cycle of ventricular, retrograde P wave synchronized pacing. We describe a case of ELT in a fifty–year–old man with complete heart block and DDDR pacemaker implanted. ELT stopped by itself. Further observation confirmed the correct DDDR stimulation without ELT syndrome.