Document Detail

Ablation of postinfarction ventricular tachycardia guided by isolated diastolic potentials.
MedLine Citation:
PMID:  14753635     Owner:  NLM     Status:  MEDLINE    
Frequent recurrences of ventricular tachycardia (VT) despite implantable cardioverter-defibrillator (ICD) and antiarrhythmic drug therapy are a typical indication for catheter ablation. We performed endocardial mapping of an haemodynamically tolerated VT in a 67-year-old male patient. Isolated diastolic potentials (IDPs) of similar morphology were recorded during atrial paced rhythm at baseline and during monomorphic VT. The isolated potentials were required for initiation and maintenance of ventricular arrhythmia. These diastolic electrograms were considered to be part of the reentry circuit, as they remained constantly associated with VT during oscillations of cycle length and resetting. Validation of the ablation target was not performed by exact entrainment pacing in order to test the predictive value of the observed diagnostic phenomena. Radiofrequency (RF) energy applications were successful at the site where IDPs were recorded during atrial paced rhythm and VT. Ablation decreased the need for ICD therapies effectively in a patient with scar-related, slow VT.
B Strohmer; C Hwang
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology     Volume:  5     ISSN:  1099-5129     ISO Abbreviation:  Europace     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2004-02-02     Completed Date:  2004-02-27     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100883649     Medline TA:  Europace     Country:  England    
Other Details:
Languages:  eng     Pagination:  375-80     Citation Subset:  IM    
Department of Cardiology, Landeskliniken Salzburg, Salzburg, Austria.
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MeSH Terms
Cardiac Pacing, Artificial
Catheter Ablation / methods*
Diastole / physiology
Electrophysiologic Techniques, Cardiac
Myocardial Infarction / complications*
Tachycardia, Ventricular / physiopathology,  surgery*

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