Methods: 194 cases of cholecystectomy in 3 groups, Group A (acupuncture + epidural anesthesia group,AEA, n=66), Group B (electrode + epidural anesthesia, EEA,n=63), and Group C (control, n=65) were observed using single blind method.

• 方法 :择期胆囊切除术 1 94例 ,分A(针硬组 )、B(电硬组 )、C(对照组 )三组单盲法观察。