Original Research

Perioperative Analgesic Effects of Preemptive Ultrasound-Guided Rectus Sheath Block Combined with Butorphanol or Sufentanil for Single-Incision Laparoscopic Cholecystectomy: A Prospective, Randomized, Clinical Trial

Fu H, Zhong C, Fu Y, Gao Y, Xu X

Journal of Pain Research 2020, 13:1193-1200

Published Date: 25 May 2020