RT Journal Article SR Electronic T1 Anaesthesia use in catheter ablation for atrial fibrillation: a systematic review and meta-analysis of observational studies JF Heart Asia JO Heart Asia FD BMJ Publishing Group Ltd, British Cardiovascular Society and Asia Pacific Heart Association SP e011155 DO 10.1136/heartasia-2018-011155 VO 11 IS 2 A1 Ka Hou Christien Li A1 Tian Sang A1 Cheng Chan A1 Mengqi Gong A1 Yingzhi Liu A1 Aaron Jesuthasan A1 Guangping Li A1 Tong Liu A1 Michael H S Lam A1 William KK Wu A1 Matthew T V Chan A1 Fang-zhou Liu A1 Cheng Chen A1 Jeffery Ho A1 Yunlong Xia A1 Gary Tse A1 , YR 2019 UL http://heartasia.bmj.com/content/11/2/e011155.abstract AB Objectives This meta-analysis and systematic review seeks to compare both characteristic parameters and procedural outcomes of atrial fibrillation (AF) catheter ablation in patients under general anaesthesia (GA)/deep sedation and mild/moderate sedation.Background Catheter ablation has become a widely applied intervention for treating symptomatic AF and arrhythmias that are refractory to medical therapy. It can be conducted through from mild sedation to GA.Methods PubMed and Embase were searched up to July 2018 for randomised controlled trials, cohort and observational studies that assessed the outcomes of catheter ablation under GA/deep sedation or mild/moderate sedation. Nine studies were included in this meta-analysis after screening with the inclusion and exclusion criteria. Heterogeneity between studies and publication bias was evaluated by I2 index and Egger’s regression, respectively.Results Our meta-analysis found catheter AF ablation with GA/deep sedation to be associated with reduced risk of recurrence (RR: 0.79, 95% CI 0.56 to 1.13, p=0.20) and complications (RR: 0.95, 95% CI 0.64 to 1.42, p=0.82), though statistically insignificant. In terms of procedural parameters, there was no significant difference between the two groups for both procedural time (SMD: −0.13, 95% CI −0.90 to 0.63, p=0.74) and fluoroscopy time (SMD: −0.41, 95% CI −1.40 to 0.58, p=0.41). Univariate meta-regression did not reveal any covariates as a moderating factor for complication and recurrence risk.Conclusion Apart from an increased likelihood of procedural success, ablation by GA/deep sedation was found to be non-significantly different from the mild/moderate sedation approach in both procedural parameters and outcome measures.