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Narrow QRS Tachycardia in a Patient with Spongiform Cardiopathy and Preexcitation: What Is the Mechanism?
MedLine Citation:
PMID:  25199432     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A 19-year-old man diagnosed with spongiform cardiomyopathy and ventricular preexcitacion was referred to our hospital for electrophysiological (EP) testing after a syncopal episode. Baseline electrocardiogram (ECG) showed ventricular preexcitation consistent with the presence of a superior paraseptal, anteroseptal, accessory pathway (AP). After triple femoral vein puncture a decapolar catheter was placed in the coronary sinus, a tetrapolar catheter in the His bundle region (with no clear His deflection recorded thorough the EP study) and a 4mm-tip irrigated ablation catheter initially at the RV apex. Programmed atrial extrastimuli from the coronary sinus reproducibly induced nonsustained and sustained episodes of an irregular narrow QRS tachycardia with apparent atrioventricular dissociation in the surface ECG (figure 1). Intracardiac recording during ongoing tachycardia are also shown (figures 2 and 3). What is the involved mechanism? This article is protected by copyright. All rights reserved.
Authors:
Roberto Matía; Antonio Hernández-Madrid; Inmaculada Sánchez; Giuseppe Lumia; Eduardo Franco; José Luis Zamorano; Javier Moreno
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-8
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  -     ISSN:  1540-8167     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
This article is protected by copyright. All rights reserved.
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