IRCT20230816059160N1 IRCT 2023-09-25 Sabzevar University of Medical Sciences Investigating the effect of position on the intensity of shoulder pain The effect of head up position on severity of shoulder pain during and after cesarean section under spinal anesthesia 2023-10-07 anticipated 116 Complete https://irct.ir/trial/72144 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: This research is a probability sampling method. The samples are selected by gradual random sampling method after confirming that they meet the entry criteria and do not have the non-entry criteria. The samples are placed one by one in one of the test and control groups. N/A Shoulder pain during and after cesarean section. Intervention 1: Intervention group:In this group, the effect of position on shoulder pain in elective caesarean section patients under spinal anesthesia is investigated.After the birth of the baby until the end of the recovery, patients is placed in a 30 degree head-up position, and then the shoulder pain is measured from during the operation untill 48 hours after the operation in these times: during operation, during recovery, 12, 24 and 48 hours after operation.and then compared with the control group. Intervention 2: Control group: In this group of patients, they do not receive any treatment intervention.The patients are placed in a supine position after the birth of the baby until the end of recovery, and then the shoulder pain is measured from during the operation untill 48 hours after the operation, in these times: during operation, during recovery, 12, 24 and 48 hours after operation, and then compared with the intervention group. 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 After the end of sampling, according to the opinion of the samples (people) participating in the study