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. 2011 Jan;97(2):137-42.
doi: 10.1136/hrt.2010.200824. Epub 2010 Nov 9.

Relationship between renal function and the risk of recurrent atrial fibrillation following catheter ablation

Michifumi Tokuda  1 , Teiichi Yamane, Seiichiro Matsuo, Keiichi Ito, Ryohsuke Narui, Mika Hioki, Shin-Ichi Tanigawa, Tokiko Nakane, Seigo Yamashita, Keiichi Inada, Kenri Shibayama, Satoru Miyanaga, Hiroshi Yoshida, Hidekazu Miyazaki, Taro Date, Takashi Yokoo, Michihiro Yoshimura
Affiliations

Relationship between renal function and the risk of recurrent atrial fibrillation following catheter ablation

Michifumi Tokuda et al. Heart. 2011 Jan.

Abstract

Background: Although several clinical variables are associated with the recurrence of atrial fibrillation (AF) following catheter ablation, the influence of renal function remains to be determined.

Objective: To evaluate the association of renal function with the outcome of the paroxysmal AF ablation.

Methods: 224 patients underwent catheter ablation for paroxysmal AF. The relationship between the pre-procedural clinical valuables and ablation outcomes was evaluated.

Results: Over the course of 37.4±24.4 months of follow-up of catheter ablation procedures for AF (mean number of procedures 1.33±0.45), 91.1% of patients (204/224) became free from AF without antiarrhythmic drugs. The estimated glomerular filtration rate (eGFR) was lower in patients with recurrent AF than in those without recurrence (66.6±17.5 vs 78.4±16.8 ml/min/1.73 m(2), p=0.003). AF recurred more frequently in patients with low eGFR (<60 ml/min/1.73 m(2)) than in those with high eGFR (>60 ml/min/1.73 m(2); 24.3% vs 6.7%, p=0.006). Among the various clinical factors, low eGFR (p=0.02) and left atrium (LA) dilatation (p=0.002) independently predicted the clinical outcome of ablation in patients with paroxysmal AF.

Conclusion: Low eGFR and LA dilatation independently influence the outcome of catheter ablation for paroxysmal AF.

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