IRCT20230508058122N1 IRCT 2023-07-01 Tehran University of Medical Sciences The effect of not injecting lidocaine on the bleeding rate of open rhinoplasty Investigating the effect of not injecting lidocaine on the bleeding rate during open rhinoplasty 2023-06-24 anticipated 42 Complete https://irct.ir/trial/70822 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Based on the table of random numbers and considering that the sample size in this study is 42 patients, each patient is given a 2-digit code. (01, 02, 03, 04 and...) To select sample people from the table, randomly start from a point of the table in the direction of the row or column of two-digit numbers, and the selection of the point is done by closing the eyes and placing a finger or the tip of the pen on the table. Movement does not differ in row or column direction The selected number is actually the code of an individual from the community that is selected as a sample. This work continues until the number of sample people can be selected. After the sample volume is complete, the sampling work ends. N/A Open rhinoplasty. Intervention 1: Intervention group: In this group, epinephrine solution with a concentration of 1.100000with a volume of 10 cc is injected in the nasal surgical field at the beginning of the surgery. Intervention 2: Control group: In this group, epinephrine solution with a concentration of 1.100000 along with lidocaine with a concentration of 1% with a volume of 10 cc is injected at the beginning of the surgery in the nasal surgery field. No - There is not a plan to make this available Justification or reason for not sharing IPD is Privacy protection