IRCT20111102007984N30 IRCT 2019-10-05 Iran University of Medical Sciences Efficacy of dexmedetomidine as an adjuvanct to ropivacaine in pediatric caudal epidural block Efficacy of dexmedetomidine as an adjuvanct to ropivacaine in pediatric caudal epidural block 2018-12-21 anticipated 46 Complete https://irct.ir/trial/42658 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: By using the randomize number table, the patients were divided into two equal groups (n=23), Blinding description: Both drugs are injectable and the injection site of both drugs in the patients' body is in the same area. Therefore, patients' parents are not aware of the type of drug. Also, the outcome evaluator is unaware of the random allocation. N/A Postoperative pain. Intervention 1: Intervention group: First group will receive ropivacaine 0.2%, 1.5 mg/kg (maximum 25 mg) before extubation. Intervention 2: Intervention group: The second group will receive ropivacaine 0.2%, 1.5 mg/kg (maximum 25 mg) in adjunct to dexmedetomedine 1 microgram per kg before extubation. Yes - There is a plan to make this available What will be shared: Some part of the clinical information of the patients will be shared When: 6 months after the end of the project To whom: Faculty Members of Medical Sciences Universities Conditions: For further studies Where to obtain: Deputy of Research & Technology Pain Research Center, Iran University of Medical Sciences How to obtain: First, at the request of the university, she/he will be informed at the request of the university's deputy of the research department, and then she/he will be referred to the research center during the administrative process and the data will be received by the committee of the research center of the center with a commitment and acceptance. Comments: