Conn I G, Marshall A H, Yadav S N, Daly J C, Jaffer M
Ann R Coll Surg Engl. 1986 Jul;68(4):191-2.
A controlled trial was undertaken to compare the efficacy of transcutaneous electrical nerve stimulation (TENS) with standard intramuscular opiate analgesia in the management of postoperative pain following appendicectomy. Consecutive patients undergoing emergency appendicectomy were randomised into control, sham TENS and active TENS groups. There was a significant decrease in pain severity and analgesic intake in both active and sham TENS groups when compared with the control group (P less than 0.01). No difference was demonstrated in pain severity between active and sham TENS groups but the active TENS group required slightly less analgesia. These results suggest that the major benefit of TENS in the postappendicectomy patient is due to its 'placebo effect' and its use in this situation cannot be recommended.
进行了一项对照试验，比较经皮电神经刺激（TENS）与标准肌肉注射阿片类镇痛在阑尾切除术后疼痛管理中的疗效。连续接受急诊阑尾切除术的患者被随机分为对照组、假TENS组和活性TENS组。与对照组相比，活性TENS组和假TENS组的疼痛严重程度和镇痛药物摄入量均显著降低（P小于0.01）。活性TENS组和假TENS组在疼痛严重程度上没有差异，但活性TENS组所需的镇痛药物略少。这些结果表明，TENS对阑尾切除术后患者的主要益处归因于其“安慰剂效应”，因此不建议在这种情况下使用。
