Trace of delirium after robotic lower abdominal tumor resection at different end-tidal carbon dioxide: a RCT trial.

Background: Postoperative delirium (POD) often occurs in oncology patients, further increasing the medical and financial burden. Robotic technology in lower abdominal tumors resection reduces surgical trauma but increases risks such as carbon dioxide (CO) absorption. This study aimed to investigate the differences in their occurrence of POD at different end-tidal CO levels.