Colorectal surgery can be applied for many reasons, among these reasons, colorectal cancer (CRC) takes the first place. With the understanding of the pathophysiological effects of analgesics better, the use of regional techniques in providing analgesia for patients undergoing colorectal cancer surgery has come to the fore. Depending on the surgical procedure, pain faced by patients is an important problem that must be deal with in the postoperative period.~In this study, the hypothesis was determined as Pre-operatively, erector spina plane block (ESPB) performed as part of multimodal analgesia reduces postoperative morphine consumption and pain scores.~The patients were divided into two groups :~Group ESP (erector spinae plan):~In this group, patients will be administered bilateral ESPB (total of 40 ml, %0.25 bupivacaine) in addition to IV morphine patient-controlled analgesia (PCA) for the first 24 postoperative hours.~Group GA (general anesthesia):~In this group, patients will be administered only IV morphine patient-controlled analgesia (PCA) for the first 24 postoperative hours.
In this study, it was aimed to evaluate the effects erector spina plane block (ESPB) on postoperative opioid consumption in the first 24 hours and pain scores after colorectal surgery.