AUTHOR=Liu Junfeng , Liu Jinming , Sun Hong , Cheng Xue , Wang Chunhui , Lei Daoyun , Han Chao TITLE=Effect of perioperative esketamine use on emergency delirium in children undergoing tonsillectomy and adenoidectomy: a systematic review and meta-analysis of randomized controlled trials JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1505408 DOI=10.3389/fmed.2025.1505408 ISSN=2296-858X