Abstract | INTRODUCTION: METHODS: Thirty consecutive patients with right atrial tachycardia were included in the study. In 15 patients (G1) the 20-polar Stablemapr was used for localization of the arrhythmia foci. Data were compared with a control group (G2, n=15), in which mapping was performed conventionally. The demographic characteristics and the distribution of the different cardiac diseases were comparable in both groups. In group 1 the identification of the EAT was facilitated by the placement of the 20-pole mapping catheter in the right atrium. In group 2 point by point measurements were performed to find the earliest local atrial activation compared to a reference electrode in the high right atrium (activation mapping), or foci were identified by analysis of the P-wave morphology during stimulation (pacemapping). RESULTS: It was possible to successfully ablate all atrial tachycardias. The distribution of the foci was similar in both groups (G1/G2): near to the superior (3/5) and inferior (1/0) caval vene ostium, on the free wall (3/3), at the coronary sinus ostium (3/3) and on the interatrial septum (5/4). The mean procedure (G1: 88+/-33 vs G2: 151+/-61 min; p= or <0.05) and fluoroscopic times (G1: 19+/-9 vs G2: 38+/-28 min; p= or <0.05) were significantly shorter in group 1. Moreover, the mean number of radiofrequency applications was reduced significantly by using the new mapping system (G1: 10+/-10 vs G2: 16+/-13; p= or <0.05). CONCLUSION:
Radiofrequency ablation of EAT with right atrial focus can be performed safely and successfully using a 20-pole mapping catheter. The greatest advantages compared to conventional mapping and ablation strategies lies in the shortened investigation and fluoroscopic time.
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Authors | P O Schueller, C Meyer, S Dierkes, C Perings, M G Hennersdorf |
Journal | Herzschrittmachertherapie & Elektrophysiologie
(Herzschrittmacherther Elektrophysiol)
Vol. 17
Issue 3
Pg. 121-6
(Sep 2006)
ISSN: 0938-7412 [Print] Germany |
Vernacular Title | Ablation ektoper rechtsatrialer Tachykardien unter Verwendung eines 20-poligen Mapping-Katheters. |
PMID | 16969725
(Publication Type: Controlled Clinical Trial, English Abstract, Journal Article)
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Topics |
- Body Surface Potential Mapping
(instrumentation, methods)
- Cardiac Catheterization
(instrumentation, methods)
- Catheter Ablation
(methods)
- Heart Atria
(surgery)
- Humans
- Middle Aged
- Surgery, Computer-Assisted
(methods)
- Tachycardia, Ectopic Atrial
(diagnosis, surgery)
- Treatment Outcome
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