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001), with the lowest opioid dose in postoperative 24 hours (P = 0.001). Moreover, no clinically significant differences were observed in complications among the three groups (P = 0.483), and no patient developed ileus. Intraperitoneal ropivacaine administered with dexmedetomidine could relieve pain and reduce opioid use in postoperative 24 hours, without any complication and ileus. Therefore, intraperitoneal ropivacaine administered with dexmedetomidine is recommended for postoperative pain control in patients undergoi