Effect OF Nitrous Oxide On Acute Pain and Opioid Consumption, and Chronic Pain After Hysterectomy

The study is prospective and double blind. In the clinic, patients undergoing hysterectomy that meet the criteria for inclusion into the study and agreed to participate in the study will be randomized into two groups. In the first group of patients will receive Nitrous Oxide and In the second group of patients will receive oxygen during the general anesthesia.