IRCT20190222042805N1 IRCT 2019-06-27 Ahvaz University of Medical Sciences Intravenous Dexmedetomidine on Post-Operative Pain in Patients Candidate of Surgery Effect of Intravenous Dexmedetomidine on Post-Operative Pain in Patients undergoing Total Abdominal Hysterectomy 2019-02-20 anticipated 70 Complete https://irct.ir/trial/38935 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Individuals are randomly divided into two groups based on simple randomization method using random digits table. In this method, a collection of non-template numbers is randomly generated and arranged as a table. Even numbers for the intervention group and the odd numbers for the control group are considered. According to the number of patients, they are randomly assigned to one of the treatment or intervention groups, Blinding description: Responsible for collecting data, data analyzer. 3 Abdominal Hysterectomy. Intervention 1: Intervention group: Immediately after the induction, Dexmedetomidine with a bolus dose of (1 μg/kg) is injected for 15 minutes and then infusion is done with a dose of (0.5 μg/kg) until the end of surgery. Intervention 2: Control group: Immediately after the induction, normal saline with a dose of (1 μg/kg) is injected for 15 minutes and then infusion is injected with a dose of (0.5 μg/kg) until the end of surgery. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information.