IRCT2015092824233N1 IRCT 2016-01-30 Vice chancellor for research, Jahrom University of Medical Sciences Comparing the effects of intravenous ephedrine, of muscular ephedrine and of intradermal ephedrine in preventing hypotension Comparing the effects of intravenous ephedrine, of muscular ephedrine and of intradermal ephedrine in preventing hypotension in caesarean section patients with spinal anesthesia 2015-05-15 anticipated 96 Complete https://irct.ir/trial/20503 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment. 2-3 Hypotension induced by injection of intravenous ephedrine, of muscular ephedrine and of intradermal ephedrine. Intervention 1: In The third group received an intravenous drug, Immediately after the entry of women into the operating room 10 milliliters per kilogram of body weight Ringer will be administered through IV No. 18 for them. Then immediately after spinal anesthesia will be administered to the patient intravenously 20 mg ephedrine. Intervention 2: In The fourth group received a placebo, Immediately after the entry of women into the operating room 10 milliliters per kilogram of body weight Ringer will be administered through IV No. 18 for them. Then 2 ml of saline immediately after spinal anesthesia will be administered to any patient. Intervention 3: In the second group received intradermal drug, Immediately after the entry of women into the operating room 10 milliliters per kilogram of body weight Ringer will be administered through IV No. 18 for them. Then 10 minutes before spinal anesthesia in the forearm intradermal injection of 10 mg of ephedrine will. Intervention 4: The first group received the drug muscle, Immediately after the entry of women into the operating room 10 milliliters per kilogram of body weight Ringer will be administered through IV No. 18 for them. Then 10 minutes before spinal anesthesia with 30 mg of ephedrine in the deltoid region will receive.