Document Detail

Retrograde Purkinje potential activation during sinus rhythm following catheter ablation of idiopathic left ventricular tachycardia.
MedLine Citation:
PMID:  9835267     Owner:  NLM     Status:  MEDLINE    
We describe two patients with idiopathic left ventricular tachycardia that were cured by radiofrequency catheter ablation. Tachycardia was inducible by ventricular stimulation and was verapamil sensitive. Two distinct presystolic potentials (P1 and P2) were recorded during tachycardia in the mid-septal or inferoapical area, but only one potential (P2) was recorded during sinus rhythm. After catheter ablation at this site, the P1 potential was noted after the QRS complex during sinus rhythm, while the P2 was still observed before the QRS complex. The P1 potential showed a decremental property during atrial or ventricular pacing. These data suggest that Purkinje tissue with decremental properties was responsible for the tachycardia mechanism, and that the reentry circuit involving this tissue is likely to be of considerable size.
H Tada; A Nogami; S Naito; T Tomita; S Oshima; K Taniguchi; K Aonuma; Y Iesaka
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  9     ISSN:  1045-3873     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  1998 Nov 
Date Detail:
Created Date:  1999-02-10     Completed Date:  1999-02-10     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1218-24     Citation Subset:  IM    
Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Japan.
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MeSH Terms
Anti-Arrhythmia Agents / diagnostic use
Bundle-Branch Block / physiopathology
Catheter Ablation / adverse effects*
Electric Stimulation
Middle Aged
Purkinje Fibers / physiology*
Sinoatrial Node / physiology*
Tachycardia, Ventricular / therapy*
Ventricular Function, Left
Verapamil / diagnostic use
Reg. No./Substance:
0/Anti-Arrhythmia Agents; 52-53-9/Verapamil

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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