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2018 ; 24
(ä): 96-102
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gab.com Text
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Prophylactic Atrial Fibrillation Ablation in Atrial Flutter Patients without
Atrial Fibrillation: A Meta-Analysis with Trial Sequential Analysis
#MMPMID29959310
Xie X
; Liu X
; Chen B
; Wang Q
Med Sci Monit Basic Res
2018[Jun]; 24
(ä): 96-102
PMID29959310
show ga
BACKGROUND New-onset atrial fibrillation (AF) is common after atrial flutter
(AFL) ablation, but it was unclear whether AF ablation could reduce the incidence
of AF in AFL patients without AF history. The present meta-analysis was conducted
to evaluate the benefit of prophylactic AF ablation in reducing the occurrence of
AF in typical AFL patients. MATERIAL AND METHODS We systematically searched
PubMed, EMBASE, and the Cochrane Library from inception to December 2017 for
randomized controlled trials (RCTs) that assessed the efficacy of AF ablation in
reducing the occurrence of AF in AFL patients without AF. Trial sequential
analysis (TSA) was used to control random errors and calculate the required
information size. RESULTS Four trials (n=357 patients) met the inclusion criteria
and were included in our meta-analysis. The incidence of AF after AFL ablation
was 46.4%. We observed that prophylactic AF ablation reduced the AF incidence
compared with simple AFL ablation (26.1% versus 46.4%, RR: 0.57, 95% CIs:
0.42-0.76, P=0.0002) with a prolonged procedure duration (P<0.00001) and
fluoroscopy time (P=0.004). Further TSA indicated that more RCTs were needed to
reach more conclusive results. There was no significant difference in clinical
complications (P=0.33) between the 2 groups. CONCLUSIONS This meta-analysis
provides evidence that prophylactic AF ablation may be more effective than simple
AFL ablation in reducing AF incidence after AFL ablation. Large prospective RCTs
are warranted to confirm the benefit of prophylactic AF ablation in AFL patients
without AF history.