Radiofrequency (RF) ablation for the treatment of atrial fibrillation has gained widespread acceptance since the concept was introduced by Haissaguerre et al a quarter of a century ago. High power short duration ablation has been widely adopted in the management of atrial fibrillation. Evidence for combining lesion size index and high power short duration ablation is lacking. In this issue of the journal, Cai et al evaluated the combination of HPSD with LSI with a focus on long-term efficacy.