Different Volumes of Erector Spinae Plane Block for Breast Surgery

Patients will be administered ibuprofen 400 mgr IV every 8 hours in the postoperative period. A patient controlled device prepared with 10 mcg/ ml fentanyl will be attached to all patients with a protocol included 10 mcg bolus without infusion dose, 10 min lockout time and 4 hour limit. Postoperative patient evaluation will be performed by an anesthesiologist blinded to the procedure.