The goal of this clinical trial is to compare intrathecal bupivacaine with or without morphine for postoperative analgesia in patients undergoing elective cesarean section. The main questions it aims to answer are: Is intrathecal bupivacaine with morphine superior to intrathecal bupivacaine alone for postoperative analgesia for parturients undergoing cesarean section? What is the duration of analgesia in the two groups? Researchers will compare drug intrathecal bupivacaine with morphine to a iintrathecal bupivacaine alone to see if intrathecal morphine has benefits for psotoperative analgesia . Participants will: Get intrathecal bupivacaine with Morphine or intrathecal bupivacaine alone during spinal anesthesia for cesarean section. They will be followed up for NRS pain scores and side effects for 24 hours. Time to need of first rescue analgesic will be noted
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Time to need of first rescue analgesic
Timeframe: within 24 hours
NRS score
Timeframe: 24 hours