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Objective:Fluid therapy is one of the key components of perioperative management.However,evidence of intraoperative fluid (IOF) administration affecting clinical outcomes following McKeown esophagogastrectomy remains limited.This study investigated the impact of IOF on clinical outcomes after McKeown esophagogastrectomy.Methods:Patients who underwent McKeown esophagogastrectomy between July 2013 and July 2016 were identified.Preoperative,intraoperative and postoperative variables for each eligible patient were retrospectively collected from our electronic medical records and anesthetic records.IOF rates were determined and their relationships to postoperative clinical outcomes were compared.Results:A total of 546 patients were enrolled in the analysis.The median IOF rate was 8.87 mL/kg/h.We divided the patents into two groups:a low fluid volume group (LFVG ＜8.87 mL/kg/h,n=273) and a high fluid volume group (HFVG ≥8.87 mL/kg/h,n=273).No statistically significant differences in postoperative clinical outcomes were found between LFVG and HFVG either before or after propensity score matching.Conclusions:No effect of IOF administration on clinical outcomes in patients undergoing McKeown esophagogastrectomy was identified.Further high-quality studies examining the influence of IOF administration on clinical outcomes following McKeown esophagogastrectomy are still needed.