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Study on the relationship between telomere length changes and recurrence of atrial fibrillation after radiofrequency catheter ablation

Introduction Advanced age is the foremost risk factor for atrial fibrillation (AF). Telomere length is a surrogate for biological aging, but the association between shortened leukocyte telomere length (LTL) and recurrence of AF (RAF) after ablation remains inconclusive. Methods In this prospective a...

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Published in:Journal of cardiovascular electrophysiology 2019-07, Vol.30 (7), p.1117-1124
Main Authors: Su, Changyang, Liu, Zheng, Gao, Yuanfeng, Liu, Ye, Hu, Rou‐Mu, Liu, Jia, Yang, Xiyan, Li, Shichao, Zhang, Yuan, Zuo, Kun, Cao, Boli, Luo, Jing, Li, Jing, Li, Kuibao, Yin, Xiandong, Chen, Mulei, Yang, Xinchun
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Language:English
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Summary:Introduction Advanced age is the foremost risk factor for atrial fibrillation (AF). Telomere length is a surrogate for biological aging, but the association between shortened leukocyte telomere length (LTL) and recurrence of AF (RAF) after ablation remains inconclusive. Methods In this prospective analysis, 282 patients underwent an initial catheter ablation for paroxysmal or persistent AF. The association between RAF and LTL was analyzed by univariate and multivariate Cox regression, as well as time‐dependent receiver operating characteristic (ROC) analysis and Kaplan‐Meier analysis. Results After a mean follow‐up of 14.20 ± 5.04 months, RAF was documented in 78 of the 277 patients who completed the study (28.16%). In Cox proportional hazards models, LTL, age, diagnosis to ablation time (DTAT), N‐terminal pronatriuretic peptide, and CHA2DS2‐VASc score were significantly associated with RAF. After multivariable adjustment, LTL and DTAT were predicted as independent risk factors for RAF with hazard ratio (HR) of 3.17 (95% confidence interval [CI]: 1.23‐8.15, P = 0.017) and 1.43 (95% CI: 1.10‐1.86, P = 0.007), respectively. In addition, ROC analysis indicated the potential diagnostic value of LTL with an area under the curve of 0.64 (P 
ISSN:1045-3873
1540-8167
DOI:10.1111/jce.13958