American Society of Anaesthesiologist physical status I-II, aged between 18-65, 40 patients which underwent lumbar spinal surgery will recruited to this study. The patients were randomly allocated into two groups (1:1), via a computer-generated randomization list. Ultrasound (USG) guided erector spinae block will perform at T10 level (bilaterally) to the 20 patients under general anaesthesia in Group E and same volume saline will apply to the ESP block region at T10 level for control group (Group C). Total intravenous anaesthesia (propofol+remifentanil) will perform to the all patients. 15 ml bupivacaine %0.5 and 5 ml lidocaine %2 will use for USG guided ESP block. 0.1 microgram/kg morphine intravenously and diclofenac Na 75 mg intramuscularly will apply for postoperative analgesia to the all patients at last 30 minutes of surgery. Postoperative pain assessment will perform with visual analog scale (VAS). VAS, morphine consumption and complications will record. The rescue analgesic 0.4 mg/kg mepheridine will administer intravenously whenever the patient requested to the analgesic. Diclofenac sodium 75 mg will repeat to the all patients at the 12th of postoperative period, intramuscularly.
American Society of Anaesthesiologist physical status I-II, aged between 18-65, 40 patients which underwent lumbar spinal surgery will recruited to this study. These subjects will Ultrasound (USG) guided erector spinae block will perform at T10 level (bilaterally) to the all patient under general anaesthesia. 15 ml bupivacaine %0.5 and 5 ml lidocaine %2 will use for USG guided ESP block. 0.1 microgram/kg morphine will apply intravenously and diclofenac Na 75 mg intramuscularly will apply at last 30 minutes of surgery postoperative analgesia to all patients. Postoperative pain assessment will perform with visual analog scale (VAS)