Objective: Regional anesthesia techniques, such as peripheral nerve blocks, have a lower side effect profile and higher patient satisfaction compared to central blocks. With the introduction of Ultrasonography (USG), these techniques have become more commonly and reliably performed. The purpose of our study is to compare parameters such as intraoperative hemodynamics, postoperative analgesic requirement, and patient satisfaction between patients undergoing External Oblique Intercostal Plane Block (EOIB) with those who did not receive EOIB, which has few studies conducted on it.