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The high power short duration (HPSD) approach was hoped to further improve the efficacy and safety in radiofrequency ablation of atrial fibrillation (AF), compared with Low power long duration (LPLD). However, the conclusion was controversial based on the previous limited data. The aim of this meta-analysis was to evaluate whether the clinical benefits of HPSD are superior to that of LPLD. The PubMed, OVID, the Cochrane Library, and Elsevier’s ScienceDirect databases were searched for clinical studies to compare HPSD and LPLD approach by simple search strings benefiting to a wider screened scope. Fifteen trials with 3255 patients were included in this analysis. Pooled analyses suggested that HPSD was associated with a lower recurrence of atrial tachyarrhythmias (ATAs) at 1-year follow-up (OR: 0.49; 95% CI: 0.35 to 0.67,  p  &lt; .0001), benefitted from AF recurrence reduced (OR: 0.46; 95% CI: 0.31 to 0.67,  p  &lt; .0001), rather than atrial tachycardia/atrial flutter (AT/AFL), but similar at 6 months follow-up, with a decreased oesophageal thermal injury (ETI) (OR: 0.48; 95% CI: 0.30 to 0.77,  p  = .002). Meanwhile, the HPSD approach benefitted to increase first-pass pulmonary vein isolation (FPI) (OR: 0.47; 95% CI: 0.34 to 0.64,  p  &lt; .00001) and decrease acute pulmonary vein re-isolation (PVR) (OR: 0.45; 95% CI: 0.35 to 0.58,  p  &lt; .00001), both mainly embodied in left pulmonary veins (PVs). HPSD showed a decreased procedural time (SMD: −0.95; 95% CI: −1.06 to −0.85,  p  &lt; .00001), ablation number for pulmonary vein isolation (PVI) (SMD: −0.41; 95% CI: −0.58 to −0.24,  p  &lt; .00001) and fluoroscopy time (SMD: −0.22; 95% CI: −0.32 to −0.12,  p  &lt; .0001), which benefits from PVI + additional ablation strategy (SMD: −0.33; 95% CI: −0.46 to −0.21,  p  &lt; .0001). The HPSD approach was associated with decreasing post-ablation AF recurrence in the 1-year follow-up, ETI, acute PVR (increasing FPI correspondingly), procedural time, ablation number for PVI and fluoroscopy time, benefitted to improve clinical outcomes and procedural process with improved safety.

Meta-analysis of high power short duration in atrial fibrillation ablation – a superior efficient ablation strategy