Skip Navigation



Europace Advance Access published online on June 13, 2006
Europace, doi:10.1093/europace/eul067
This Article
Right arrow Full Text (Rapid PDF)
Right arrow All Versions of this Article:
8/8/601    most recent
eul067v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Krittayaphong, R.
Right arrow Articles by Kangkagate, C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Krittayaphong, R.
Right arrow Articles by Kangkagate, C.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The European Society of Cardiology 2006. All rights reserved
Received November 16, 2005
Accepted April 14, 2006

Article

Electrocardiographic predictors of long-term outcomes after radiofrequency ablation in patients with right-ventricular outflow tract tachycardia

Rungroj Krittayaphong 1 *, Charn Sriratanasathavorn 2, Chatkanok Dumavibhat 2, Sachana Pumprueg 1, Warangkana Boonyapisit 1, Sukanya Pooranawattanakul 2, Suteera Phrudprisan 2, and Charuwan Kangkagate 3

1 Division of Cardiology, Department of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
2 Division of Cardiology, Her Majesty Cardiac Center, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
3 Division of Cardiology, Department of Research Promotion, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand

* To whom correspondence should be addressed.
Rungroj Krittayaphong, E-mail: sirkt{at}mahidol.ac.th


  Abstract

Aims The objectives of this study were to identify electrocardiographic (ECG) predictors of long-term outcomes after radiofrequency (RF) ablation in patients with right-ventricular outflow tract (RVOT) tachycardia.

Methods and results We correlated ECG characteristics with RF ablation outcomes in 144 patients with RVOT tachycardia who underwent RF ablation for >1 year. Unfavourable RF ablation outcomes were predefined as unsuccessful RF ablation or recurrence of tachycardia requiring repeated ablation. RF ablation was not successful in 11 (7.6%) patients and 16 (12%) patients had arrhythmia recurrence requiring repeated ablation. Average follow-up time was 72.2 ± 28.4 months. Selected parameters from univariate analysis included number of RF applications, pacemapping, application of bonus burn, procedure time, monophasic R-wave in lead I, QS pattern in leads I and aVL, QRS duration in leads II and V2, and right axis deviation, in ventricular tachycardia. From logistic regression analysis, only monophasic R-wave in lead I remained in the final equation (P=0.004, odds ratio 12.9).

Conclusion Monophasic R-wave in lead I during RVOT tachycardia is associated with unfavourable outcomes after RF ablation. This finding may help clinicians in the selection of patients for RF ablation and for the prediction of RF ablation outcome.

Keywords: ECG; RF ablation; RVOT tachycardia; Ventricular tachycardia.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 EuropaceHome page
E. M. Aliot, W. G. Stevenson, J. M. Almendral-Garrote, F. Bogun, C. H. Calkins, E. Delacretaz, P. D. Bella, G. Hindricks, P. Jais, M. E. Josephson, et al.
EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias: Developed in a partnership with the European Heart Rhythm Association (EHRA), a Registered Branch of the European Society of Cardiology (ESC), and the Heart Rhythm Society (HRS); in collaboration with the American College of Cardiology (ACC) and the American Heart Association (AHA)
Europace, June 1, 2009; 11(6): 771 - 817.
[Full Text] [PDF]

Home page
 CirculationHome page
W. G. Stevenson and K. Soejima
Catheter Ablation for Ventricular Tachycardia
Circulation, May 29, 2007; 115(21): 2750 - 2760.
[Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.