关键词: 腰方肌阻滞, 超声引导, 术后镇痛

Abstract: Objective To observe the effect and adverse reaction of the quadratus lumborum block after total hysterectomy. Methods A randomized, double-blind, controlled trial was performed. Forty patients who were age 43 to 55 years old and ASA class Ⅰ~Ⅱwas randomly divided into two groups and received bilateral ultrasound-guided quadratus lumborum block with either 0.4 mL/kg（2.5 mg/mL） ropivacaine or saline after total hysterectomy. All the patients received a postoperative analgesic regimen of sufentanil, dezocine administered by a patient?controlled pump. Then we recorded the visual analogue scores（VAS）of 2, 12, 24, 48 hours after operation, the times pressing the analgesic pump button, the times and the dosage of oxycodone used in ward, the time getting out of bed, the first time of exhaust after operation and the side effects. Results The observation group has a lower visual analogue scores for resting at 2, 12, 24 hours after operation, a lower moving VAS at 2, 12, 24, 48 hours after operation, the less times of pressing the analgesic pump button, the less times and the dosage of oxycodone used in ward. There were no more significant difference found in two groups. Conclusion Ultrasound-guided quadratus lumborum block can reduce postoperative pain for patients after total hysterectomy.

Key words: ultrasound?guidance, quadratus lumborum block, postoperative analgesia