AUTHOR=Zhu Shiyao , Wang Dan , Gao Haiyan , Heng Lei , Shui Weikang , Zhu Shanshan TITLE=Clinical value of esketamine combined with ropivacaine in rebound pain after brachial plexus block in patients with upper limb fractures JOURNAL=Frontiers in Surgery VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2024.1470205 DOI=10.3389/fsurg.2024.1470205 ISSN=2296-875X