In this study, total 60 patients, American society of anaesthesiology physical status I-II aged between 18-65 who underwent totally mastectomy will recruit. Using with computer randomisation, the patients allocate into two groups. Anaesthesia induction will perform with 2 mg/kg propofol, 0.6 mg/kg rocuronium and 2 microgram/kg fentanil and general anaesthesia will maintain with sevoflurane %1-2 +%40-60 O2-N20 mixture and remifentanil infusion. All of the blocks will perform under general anaesthesia. Ultrasound guided Erector spinae plane block (ESP) will perform with 15 ml bupivacaine+ 5 ml lidocaine in Group ESP and ultrasound guided serratus anterior plane (SAP) block will perform with 5 ml bupivacaine+ 5 ml lidocaine in Group SAP. Postoperative pain, analgesic requirement and complications will evaluate. Postoperative pain assessment will apply with 11-point numerical rating scale (NRS) and postoperative analgesic requirement will calculate and record with morphine consumption (patient controlled analgesia).
Total 60 patients, American society of anaesthesiology physical status I-II aged between 18-65 who underwent totally mastectomy will recruit to the study. The patients randomly divided into two groups. Ultrasound guided Erector spinae plane block (ESP) will perform with 15 ml bupivacaine+ 5 ml lidocaine in Group ESP and ultrasound guided serratus anterior plane (SAP) block will perform with 5 ml bupivacaine+ 5 ml lidocaine in Group SAP. Postoperative pain assessment will apply with 11-point numerical rating scale (NRS) and postoperative analgesic requirement will calculate and record with morphine consumption (patient controlled analgesia).