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https://hdl.handle.net/2440/39098
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Type: | Journal article |
Title: | Focal atrial tachycardia arising from the tricuspid annulus: electrophysiologic and electrocardiographic characteristics |
Author: | Morton, J. Sanders, P. Das, A. Vohra, J. Sparks, P. Kalman, J. |
Citation: | Journal of Cardiovascular Electrophysiology, 2001; 12(6):653-659 |
Publisher: | Futura Publ Co |
Issue Date: | 2001 |
ISSN: | 1045-3873 1540-8167 |
Statement of Responsibility: | Joseph B. Morton, Prashanthan Sanders, Arvind Das, Jitendra K. Vohra, Paul B. Sparks, and Jonathan M. Kalman |
Abstract: | <h4>Introduction</h4>Focal right atrial tachycardia (RAT) arising from the crista terminalis, para-Hisian, and coronary sinus os regions are well described. Less information exists regarding RAT arising from the nonseptal region of the tricuspid annulus (TA).<h4>Methods and results</h4>From a consecutive series of 64 patients who had undergone successful radiofrequency ablation (RFA) of 67 RATs, the characteristics of 9 (13%) patients (6 men; mean age 50 +/- 20 years) with a TA focus were reviewed. The annular focus was localized to the inferoanterior TA in 7 and the superior TA in 2. Mean tachycardia cycle length was 371 +/- 66 msec. Mean activation time at the site of successful RFA in 9 of 9 patients was -43 +/- 11 msec. At 9.3 +/- 5.6 months of follow-up, 1 of 9 patients had recurrent tachycardia successfully treated with repeat RFA. In 7 of 9 patients with RAT from the inferoanterior TA, the surface ECG P wave morphology was upright in aVL, inverted in III and VI, and either inverted or biphasic with an initial negative deflection from V2 to V6.<h4>Conclusion</h4>The TA is an important site of origin of RAT. In the present study, the inferoanterior region of the TA was a preferential site of origin with resulting characteristic P wave morphology. Knowledge of this anatomic distribution and P wave morphology allows targeted mapping and may facilitate successful RFA. |
Keywords: | atrial tachycardia tricuspid annulus radiofrequency ablation |
Rights: | © 2001 by Futura Publishing Company, Inc. |
DOI: | 10.1046/j.1540-8167.2001.00653.x |
Published version: | http://dx.doi.org/10.1046/j.1540-8167.2001.00653.x |
Appears in Collections: | Aurora harvest 6 Medicine publications |
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