Surgery

Tegileridine versus Sufentanil Patient-Controlled Intravenous Analgesia for Gastrointestinal Recovery in Elderly Patients Undergoing Laparoscopic Colorectal Can

To compare tegileridine-based and sufentanil-based patient-controlled intravenous analgesia (PCIA) for postoperative gastrointestinal recovery in elderly patients undergoing laparoscopic colorectal cancer surgery. In this single-center, double-blind, randomized controlled trial,

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