Statistical analysis
Data analysis was conducted using SPSS version 22.0 (IBM Corp.) and Prism version 8.0.2 (Graphpad Software, Inc.), adopting a significance threshold of P < 0.05. The differences in cumulative survival without PVCs or VT between the control group and the ICE group are depicted using Kaplan-Meier curves. To ascertain predictors of both immediate and sustained success, logistic regression analyses were employed. The findings are presented as odds ratios (ORs) with corresponding 95% confidence intervals (CIs). A comprehensive list of potential confounders was considered, including age, sex, ICE utilization, origins of PVCs, PVC burden, duration of PVCs, abnormal LVEF, abnormal LVEDD, left atrial diameter of 40 mm or greater, cardiovascular comorbidities, smoking habits, alcohol intake, and obesity (defined as a body mass index of 28.0 or higher). Variables that reached a significance level of P < 0.10 in the initial analyses were incorporated into a multivariable logistic regression model to identify independent predictors.