Following ethics committee approval and written consent from the patients, the study was conducted on 60 patients aged between 18-75 years in American Society of Anesthesiologists (ASA) classes I-III, who were to undergo midline incisions. The demographic data of the patients were recorded and after routine monitoring and general anesthesia induction, they were divided into two groups as the ESPB group and RSB group. Hemodynamic data of all patients were recorded before induction, one minute after induction, and intraoperatively in 30-minute periods. Patient-controlled analgesia (PCA) prepared with morphine was administered to all patients. Patients' intraoperative hemodynamic data and administered opioid doses, postoperative visual analog scales (VAS) at rest and during coughing, time to first PCA dose, postoperative morphine consumption, need for rescue analgesics, duration time until first mobilization, opioid side effects, and patient and surgeon satisfaction were evaluated.
In study, The investigators aimed to compare the intraoperative and postoperative analgesic efficacy of erector spinae plane block and rectus sheath block, which investigators routinely perform in surgeries with abdominal lover midline-upper midline incision, morphine consumption with patient-controlled analgesia, as well as patient and surgeon satisfaction.