IRCT20160307026950N20 IRCT 2020-06-10 Esfahan University of Medical Sciences Ketamine and Ondansetron in post operative shivering in Cesarean Section Comparison of the effectiveness of intravenous injection of Ketamine and Ondansetron in the prevention of the post-operative shivering in Cesarean Section under spinal anesthesia 2020-06-21 anticipated 121 Complete https://irct.ir/trial/48252 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention, Randomization description: Randomization is done in a simple way so that the names of patients enter the randomization software (https://random-allocation-software.software.informer.com/2.0/) if they have the necessary conditions and according to the time of entry. software Randomly assign numbers to each patient, and based on these numbers, patients enter one of the intervention or control groups so that their number reaches the required number in each group, Blinding description: The drugs and placebo are packaged in the same form with the same volume and coded, and are randomly distributed among patients so the attending, the clinical caregiver, and the evaluator do not notice the type of medication. 3 Postoperative shivering. Intervention 1: Intervention group A: Ondansetron is injected into the patient at a dose of 4 mg immediately after umbilical cord clamping. Intervention 2: Intervention Group A; Ketamine 0.5 mg per kilogram of body weight is injected into the patient immediately after clamping the umbilical cord. Intervention 3: Control group C: Normal saline as a placebo is injected into the patient immediately after the umbilical cord clamp. 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 There is no further information.