Effects of epidural preemptive analgesia on stress reaction in retroperitoneal laparoscopic adrenalectomy surgery: a randomized controlled study.

Objective: To compare the effects of general anesthesia combined with epidural preemptive analgesia with general anesthesia on stress reaction in the retroperitoneal laparoscopic surgery.

Methods: Forty patients with adrenal tumors undergoing retroperitoneal laparoscopic surgeries were randomly assigned into general anesthesia combined with epidural preemptive analgesia group (GE) and general anesthesia group (G). Each group had 20 cases.