Document Detail

Premature ventricular contractions with a right bundle branch block and inferior QRS axis morphology: where is the site of the origin?
MedLine Citation:
PMID:  17669085     Owner:  NLM     Status:  MEDLINE    
A 63-year-old woman with symptomatic premature ventricular contractions (PVCs) underwent electrophysiologic testing. The PVCs were suggested to originate from the infra-aortic valvular left ventricular outflow tract because the PVCs had S-waves in leads I, V5, and V6, and an R/S ratio >1 in lead V(1). However, during some PVCs without S-waves, the ST segment had negative retrograde P-waves with a longer ventricularatrial (VA) interval. A Radiofrequency (RF) application in the left coronary cusp completely eliminated the PVCs, suggesting that negative retrograde P-waves might have been observed as pseudo S-waves during the PVCs.
Takumi Yamada; Jose F Huizar; Hugh T McElderry; G Neal Kay
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  30     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-02     Completed Date:  2007-11-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1009-11     Citation Subset:  IM    
Division of Cardiovascular Diseases, Cardiac Rhythm Management Laboratory, University of Alabama at Birmingham, 1670 University Boulevard, Birmingham, AL 35294, USA.
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MeSH Terms
Bundle-Branch Block / physiopathology*,  surgery
Catheter Ablation
Electrocardiography, Ambulatory
Electrophysiologic Techniques, Cardiac
Middle Aged
Ventricular Dysfunction / physiopathology*
Ventricular Premature Complexes / physiopathology*,  surgery

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