IRCT20171030037093N30 IRCT 2020-02-05 Esfahan University of Medical Sciences Comparison of the effect of two compounds of Propofol-Remifentanil and Propofol-Hydralazine on volume of blood loss during dacryocystorhinostomy with general anesthesia A comparative study on the effect of two compounds of Propofol-Remifentanil and Propofol-Hydralazine on volume of blood loss during dacryocystorhinostomy with general anesthesia 2020-02-20 anticipated 80 Complete https://irct.ir/trial/45252 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients included in the study are randomly assigned into two groups using Random allocation computer software with the simple method, Blinding description: Because the patient is unaware of the type of drug used and the anesthesiologist is unaware of the type of intervention, this is a double-blind study. 3 Blood loss during surgery. Intervention 1: First intervention group:In group A in a 50 cc syringe 40 cc propofol with 0.15 μg / kg remifentanil is prepared and eventually the infusion at a dose of 50-150 μg/kg/min will be started. At the end of surgery, blood volume in the suction is observed and recorded. Intervention 2: Second intervention group:In group B, 40 cc of propofol with 20 mg of hydralazine will be prepared and the infusion will eventually start at a dose of 50-150 µg / kg / min. At the end of surgery, the volume of blood collected in the suction is observed and recorded. 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 I will decide until finishing the study