Fig. 1From: Effect of surgical pleth index-guided analgesia versus conventional analgesia techniques on fentanyl consumption under multimodal analgesia in laparoscopic cholecystectomy: a prospective, randomized and controlled studyCONSORT flow diagram of participants allocation. In total, 18 of 80 patients withdrew for various reasons, and 31 patients from the SPI group and 31 patients from the control group were eventually included in final analysisBack to article page