IRCT20141009019470N112 IRCT 2021-04-01 Shiraz University of Medical Sciences Comparison of the effect of remifentanil and dexmedetomidine on surgeon satisfaction from surgical field and bleeding in rhinoplasty Comparison of the effect of remifentanil and dexmedetomidine on surgeon satisfaction from surgical field and bleeding in rhinoplasty 2021-04-23 anticipated 60 Complete https://irct.ir/trial/51681 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention, Randomization description: Randomization method is based on permutation block randomization method with block size 6 by using the site www.sealedenvelope.com and Seed number: 266608829014794, Blinding description: The drugs are prepared by a nurse who is unaware of the type of study with label A in the dexmedetomidine group and label B in the remifentanil group and are given to a person who is unaware of the specialization of the groups for injection. The person assessing patients and patient satisfaction at the end of the study is also unaware of the allocation of study groups. 2-3 Rhinoplasty surgery. Intervention 1: Intervention group: In the Intervention group one patients will receive 1 μg / kg dexmedetomidine (PFIZER, USA) for 20 minutes and at the same time as induction begins with a dose of 0.6 μg / kg and continues until the end of the operation. Intervention 2: Intervention group: In the Intervention group two:Simultaneously with the induction of anesthesia, in the remifentanil group (EXIR, IRAN), remifentanil infusion of 0.25 μg is started. It continued until the end of the operation. No - There is not a plan to make this available Justification or reason for not sharing IPD is It is against the policies of the center.