Effect of multi-mode preanalgesia on gastrointestinal dysfunction and postoperative outcome in patients undergoing laparoscopic colorectal surgery

Interventions: Experimental group:Transabdominal muscle plane block was performed before anesthesia induction + Flurbiprofen 1mg/kg was given before skin cutting + Oxycodone was given at 0.1mg/kg before skin cutting + Oxycodone was administered at 0.1mg/kg before surgery;control group:Sufentanil was given at 0.1ug/kg before peeling + Before the operation, flurbiprofen was given 1mg/kg + Sufentanil was administered at 0.1ug/kg before surgery + TAPB was performed postoperatively Primary outcome(s): I-FEED;Complications of other organs after operation Study Design: Parallel