IRCT20210928052617N1 IRCT 2021-11-07 Islamic Azad University Evaluation of the effect of fentanyl and morphine on hemodynamic changes during abdominal surgery Evaluation of the effect of fentanyl and morphine on hemodynamic changes during abdominal surgery 2021-11-22 anticipated 36 Complete https://irct.ir/trial/59016 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: 36 patients who are candidates for abdominal surgery referred to Amir Al-Momenin Hospital in Tehran during the years 1399-1400 are available to study Each person is randomly assigned to one of two groups The randomization method is simple and individual randomization unit The tool used in randomization is Excel software, Blinding description: Both groups participating in the clinical trial (morphine group and fentanyl group) enter the trial randomly. The drugs are taken in two syringes and equal volumes, and in the form of a score of 1, 2, or a and b, which the collector does not know, as well as the surgeon and the patient, so he is both blind. 3 Condition 1: pulse rate changes. Condition 2: respiratory rate changes. Condition 3: blood pressure changes. Intervention 1: Intervention group: After establishing a proper venous route and complete monitoring, anesthesia is induced by injection of 2 mimidazolam, 3 cc of fentanyl, thiopental and atracurium, and then 1 cc of fentanyl is injected every hour and hemodynamic changes are measured.Community Verified icon. Intervention 2: Control group: After establishing a proper venous route and complete monitoring, anesthesia is induced by injection of 2 mimidazolam, 3 cc of fentanyl, thiopental and atracurium, and then 2 mg of morphine is injected every hour and hemodynamic changes are measured.Community Verified icon. 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