IRCT20190130042559N1 IRCT 2020-05-29 Tehran University of Medical Sciences ٍEffect of manual tilting of the uterus in cesarean section A comparative study of hemodynamic effects of manual tilting of the uterus to left during cesarean section under spinal anesthesia 2019-07-23 anticipated 70 Complete https://irct.ir/trial/38007 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: In a simple random sampling, 70 patients are selected. A number of 70 papers are prepared. The word "intervention" is written on half of the papers and the word "control" is written on the other half. The papers are placed in envelopes and are sealed. Each patient picks up an envelope and is assigned to the intervention or control group based on the paper in the envelope. N/A Hypotension during cesarean section under spinal anesthesia. Intervention 1: Intervention group: the group that receives manual left tilting of the uterus, anesthesiologist stands on the right side of the patients and presses the highest border of the uterus to the left during the surgery until fetus delivery. maternal blood pressure and pulse rate will monitor continuously and register 5 times. Intervention 2: Control group: the group that goes through the conventional cesarean section without tilting of the uterus,In this group we won't do any intervention on the uterus during cesarean section and only record vital signs. 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 more information available.