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European Heart Journal 2002 23(17):1387-1393; doi:10.1053/euhj.2002.3192
Copyright © 2002 by the European Society of Cardiology.
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A stepwise mapping approach for localization and ablation of ectopic right, left, and septal atrial foci using electroanatomic mapping

U. Wetzela, G. Hindricksa, P. Schirdewahna, A. Dorszewskia, A. Flecka, F. Heinkeb and H. Kottkampa,f1

a Department of Electrophysiology, Heart Center, University of Leipzig, Leipzig, Germany
b Department of Pediatric Cardiology, Heart Center, University of Leipzig, Leipzig, Germany

Received November 2, 2001; accepted February 5, 2002

Abstract

Aims We describe a new strategic stepwise mapping approach for fast and accurate identification and ablation of ectopic atrial foci using an electroanatomic mapping system.

Methods and Results Mapping procedures started with the acquisition of four points at the superior/septal part of the tricuspid annulus. According to this activation sequence, maps were continued towards the right atrial free wall if relatively early activation was shown at the superior part of the initial map or towards the triangle of Koch and, if necessary, to the left atrium, in cases of relatively early activation at the septum. High density mapping and detailed electrogram analysis only of the target area allowed identification and ablation of 34 foci in 30 of the 32 studied consecutive patients. A small number of mapping points were sufficient within a procedure time of 90±41min for right 148±68min and for left sided foci and a total fluoroscopy time of 9·6±7·2min and 24·8±16·4min respectively. Sixteen foci were located at the right free wall, eight at the left free wall, and 10 at the right or left side of the septum.

Conclusion Strategical electroanatomical mapping with fast identification of the area of tachycardia origin and high density mapping only of this target area allowed fast and successful localization and ablation of right and left free wall and septal ectopic atrial foci. Copyright 2002 The European Society of Cardiology. Published by Elsevier Science Ltd. All rights reserved.

Key Words: Catheter ablation, arrhythmia, electrophysiology, mapping

f1 Correspondence: Hans Kottkamp, MD, University of Leipzig - Heart Center, Cardiology, Dept. of Electrophysiology, Strümpell-strasse 19, D-04289 Leipzig, Germany.

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