Effect of Ultrasound-Guided erector spinae plane block on postoperative recovery quality of laparoscopic colorectal cancer: a prospective double-blind, randomized control trial

Interventions: erector spinae plane block group:Ultrasound-guided erector spinae block will be performed before operation;Standard analgesia group:Multimodal analgesia with local incision block after operation Primary outcome(s): 40-item quality of recovery questionnaire;Postoperative Vas (Visual Analogue Scale) scores at rest;postoperative Vas scores at motion Study Design: Parallel