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Atrial tachycardia originating from the cavo-tricuspid isthmus may exhibit narrow P waves.
MedLine Citation:
PMID:  20234813     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
An 83-year-old man underwent electrophysiological testing for focal atrial tachycardia (AT) exhibiting narrow P waves with negative deflections in the inferior leads. Catheter ablation at the cavo-tricuspid isthmus (CTI) successfully eliminated the AT. The propagation map during AT and pacing study from the successful ablation site demonstrated that the atrial activation throughout the CTI did not produce significant P wave deflections. Consequently, during AT, the left atrial activation time determined the P wave duration. This case demonstrates that AT originating from the CTI may exhibit narrow P waves which can be misinterpreted as AT originating from the inter-atrial septum.
Authors:
Takumi Yamada; H Thomas McElderry; James D Allred; Harish Doppalapudi; G Neal Kay
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Publication Detail:
Type:  Journal Article     Date:  2010-03-05
Journal Detail:
Title:  Indian pacing and electrophysiology journal     Volume:  10     ISSN:  0972-6292     ISO Abbreviation:  Indian Pacing Electrophysiol J     Publication Date:  2010  
Date Detail:
Created Date:  2010-03-17     Completed Date:  2010-05-20     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101157207     Medline TA:  Indian Pacing Electrophysiol J     Country:  India    
Other Details:
Languages:  eng     Pagination:  152-5     Citation Subset:  -    
Affiliation:
Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294-0019, USA. takumi-y@fb4.so-net.ne.jp
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