Document Detail

Atrial tachycardia originating at the tricuspid annulus.
MedLine Citation:
PMID:  17285448     Owner:  NLM     Status:  MEDLINE    
We report a patient with re-entrant atrial tachycardia that originated at the inferolateral tricuspid annulus. Single atrial extra-stimulation reproducibly induced the atrial tachycardia with an inverse relationship between the coupling interval of extra-stimulation and the return cycle of the first tachycardia beat. A real-time three-dimensional electroanatomical mapping showed focal atrial activation spreading semi-radially from the tricuspid annulus. The tachycardia was successfully eliminated by radiofrequency ablation at the earliest atrial activation site, preceding by 27 ms the arbitrary determined onset of surface P wave. An accelerated atrial rhythm with similar P-wave morphology to that of the tachycardia was observed at the successful ablation site during radiofrequency application. The mechanism of this tachycardia seems to be due to re-entry originating in or around the possible accessory atrioventricular node without ventricular connection.
Yuji Okuyama; Hiroya Mizuno; Takafumi Oka; Sei Komatsu; Atsushi Hirayama; Kazuhisa Kodama
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Publication Detail:
Type:  Case Reports; Journal Article     Date:  2007-01-26
Journal Detail:
Title:  Heart and vessels     Volume:  22     ISSN:  0910-8327     ISO Abbreviation:  Heart Vessels     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-02-07     Completed Date:  2007-10-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511258     Medline TA:  Heart Vessels     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  55-8     Citation Subset:  IM    
Cardiovascular Division, Osaka Police Hospital, 10-31 Kitayama-cho, Tennoji-ku, Osaka, 543-0035, Japan.
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MeSH Terms
Catheter Ablation
Electrophysiologic Techniques, Cardiac*
Middle Aged
Tachycardia / physiopathology*,  surgery
Tricuspid Valve / physiopathology*

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