Esketamine-based opioid-free anaesthesia alleviates postoperative nausea and vomiting in patients who underwent laparoscopic surgery: study protocol for a randomized, double-blinded, multicentre trial

HIGHLIGHTS

• who: Hai-yan Chen from the The study is designed as a prospective, randomized, controlled, multicentre trialThe protocol is in accordance with the Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) statement [18]. This trial is registered atwith ID number ChiCTR2100047169. The sponsor of this trial is the Department of Anaesthesiology of the Shidong Hospital, University of Shanghai for Science and Technology. The sponsor is responsible for the collection, management, analysis and interpretation of the data as well as the writing of the report and the decision to submit the report for publication. The study is supported . . .
  

   

  

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