Clinical Focus ›› 2022, Vol. 37 ›› Issue (10): 899-904.doi: 10.3969/j.issn.1004-583X.2022.10.003

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Radiofrequency ablation in treating pre-excited atrial fibrillation recurrence: A meta analysis

An Jingjing1, Wang Xiaojuan2, Deng Aiyun2()   

  1. 1. The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
    2. Department of Cardiology, The First Hospital of Lanzhou University, Lanzhou 730000, China
  • Received:2022-05-29 Online:2022-10-20 Published:2022-11-26
  • Contact: Deng Aiyun E-mail:540218961@qq.com

Abstract:

Objective To explore the effectiveness of radiofrequency ablation (RFA) in treating pre-excited atrial fibrillation(AF) recurrence, aiming to provide theoretical basis for clinical practice. Methods Related studies regarding the treatment of RFA in pre-excited AF recurrence were searched in PubMed, Embase, CNKI, and Wanfang using a computer. Data collection for this study took place from the establishment to March 26, 2022. Two researchers independently screened the literature and extracted information and evaluated the quality of the literature, and R4.1.0 software was applied for Meta-analysis. Results Fourteen studies representing 851 patients were included. After RFA intervention, the overall AF recurrence rate was 0.13(95%CI: 0.08-0.19, P<0.01) in Meta-analysis result. Wherein, the subgroup analysis showed that the AF recurrence rate of accessory pathway (AP) ablation alone and AP+ pulmonary vein isolation (PVI) was 0.15(95%CI: 0.09-0.21, P<0.01) and 0.07 (95%CI: 0.01-0.15, P<0.01), respectively. The AF recurrence rates of unilateral bypass and multiple bypass were 0.19(95%CI: 0.12-0.28, P=0.01) and 0.05(95%CI: 0.00-0.20, P=0.10), respectively; the AF recurrence rates of left side tract and right side tract were 0.14(95%CI: 0.07-0.21, P<0.01) and 0.10(95%CI: 0.06-0.16, P=0.07), respectively; the AF recurrence rates of patients aged ≤40 years old and >40 years old were 0.10(95%CI: 0.01-0.23, P<0.01) and 0.15(95%CI: 0.09-0.21, P<0.01) respectively; the AF recurrence rates of patients with follow-up ≤1 year and >1 year was 0.08(95%CI: 0.02-0.17, P=0.09) and 0.17(95%CI: 0.14-0.21, P=0.17), respectively; the AF recurrence rates of sample size ≤50 cases and >50 cases were 0.18(95%CI: 0.09-0.29, P<0.01) and 0.11(95%CI: 0.06-0.17, P<0.01), respectively; the AF recurrence rates of men and women were 0.10(95%CI: 0.04-0.19, P<0.01) and 0.19(95%CI: 0.12-0.28, P=0.26), respectively; the AF recurrence rates of patients with and without organic heart disease were 0.34(95%CI: 0.15-0.57, P<0.01) and 0.04(95%CI: 0.00-0.10, P<0.01), respectively. Conclusion After RFA, current evidences suggest a higher AF recurrence rate, AP + PVI is superior to AP alone for reducing the recurrence rate, and the age and follow-up time are positively associated with the AF recurrence rate.

Key words: pre-excitation syndromes, atrial fibrillation, radiofrequency ablation, recurrence rate, Meta-analysis

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