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01.12.2014 | Ausgabe 3/2014

Journal of Interventional Cardiac Electrophysiology 3/2014

Impact of baseline atrial fibrillation cycle length on acute and long-term outcome of persistent atrial fibrillation ablation

Zeitschrift:
Journal of Interventional Cardiac Electrophysiology > Ausgabe 3/2014
Autoren:
S. Ammar, G. Hessling, M. Paulik, T. Reents, R. Dillier, A. Buiatti, V. Semmler, C. Kolb, B. Haller, I. Deisenhofer
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s10840-014-9927-6) contains supplementary material, which is available to authorized users.

Abstract

Background

A short baseline atrial fibrillation (AF) cycle length (CL) has been associated with a worse outcome after catheter ablation for AF, whereas the impact of a long baseline AFCL is unknown. We investigated the influence of AFCL on acute and long-term success in a large series of patients undergoing catheter ablation for persistent AF.

Methods

Overall, 177 consecutive patients undergoing catheter ablation of persistent AF using a sequential ablation approach were included in the analysis. AFCL was measured in the left atrial appendage (LAA) at baseline and following each ablation step. The primary endpoint was freedom from any atrial arrhythmia off antiarrhythmic drugs (AAD) with a single ablation procedure after 12 months.

Results

Mean AFCL was 164 ± 24 ms. A shorter AFCL was associated with longer AF duration, larger LA diameter, and longer procedure duration.
Termination to sinus rhythm (SR) was achieved in 57 (32 %) patients. Baseline AFCL was shorter (161 ± 24 ms) in patients without AF termination compared to patients with AF termination (169 ± 23 m, p = 0.03).
The primary endpoint was reached less frequently in patients with a short (<155 ms) AFCL (18 vs. 38.5 %, p = 0.006). Patients with an AFCL between 155 and 200 ms had the best outcome compared to patients with AFCL <155 or ≥200 ms (40 vs. 18 %, p = 0.003).

Conclusions

Patients with a baseline AFCL between 155 and 200 ms have the best outcome after a single ablation procedure for persistent AF compared to patients with an AFCL of <155 or ≥200 ms.

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Zusatzmaterial
Figure A (supplemental material): The plot shows the distribution of baseline atrial fibrillation cycle lengths in patients with and without an observed arrhythmia during follow-up. The horizontal line indicates the cutoff value of 155 ms (PPTX 253 kb)
10840_2014_9927_MOESM1_ESM.pptx
Literatur
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