IRCT2013100214860N1 IRCT 2013-10-25 Research Office of Kurdistan University of Medical Sciences Davy effects of pethidine and ketamine in preventing postoperative shivering after cesarean section in pregnant women Comparison of therapeutic effect of intravenous ketamine low doses versus pethidine on post spinal anesthesia shivering in patients undergoing elective cesarean section 2013-08-23 anticipated 90 Complete https://irct.ir/trial/14334 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Other design features: Informed consent was obtained from patients undergoing elective cesarean section patients are being enrolled. Vblafaslh drug intravenously after spinal injection is administered. Presence or absence of chills and grade will be determined based on a 4-0 scale. N/A Shivering after spinal anesthesia in patients undergoing elective cesarean surgery.. Intervention 1: Pethidine group of 0/5 kg ketamine group and 0/3 kg at equal volume immediately after spinal anesthesia is injected intravenously. Two groups of disposable needles for anesthetic drug bupivacaine 24 and 12 mg dose is used. Intervention 2: In control group, 24 disposable needles for anesthetic drug bupivacaine and 12 mg dose is used unlike the intervention group but no drug (ketamine or pethidine) for prevention of shivering after cesarean section are not receiving.