2.1 Search strategy and study selection
An all-round search was conducted in Pubmed, Medline, Cochrane,
Clinicaltrials.gov from inception through December 2021 by two reviewers
(Shuyu Jin and Yumei Xue) independently. The search involved the
following key words: ("Atrial fibrillation"OR AF) AND ("High
power"OR"High-power shorter-duration"OR HPSD).