Ultrasound-guided anterior quadratus lumborum block at the L2 level for postsurgical analgesia in patients undergoing laparoscopic gynaecological surgery: a single-centre, randomised, double-blinded trial at a university-affiliated hospital in China

Abstract

ObjectiveThis study aimed to investigate the analgesic effect of an ultrasound-guided anterior quadratus lumborum block (QLB) at the L2 level on postoperative pain after laparoscopic gynaecological surgery.DesignProspective single-centre randomised double-blind...