comparison of The effectiveness of intravenous dexamethasone with intravenous ondansetron in preventingheadache after spinal anesthesia in cesarean scetion

Inclusion criteria:

The patient's willingness to participate in the study and completion of the informed consent form. Patients who are candidates for elective cesarean section under spinal anesthesia Patients aged 18–50 years Absence of concurrent infectious disease Absence of moderate-to-severe chronic headache within 24 hours before anesthesia. No administration of analgesics or medications with analgesic properties within 24 hours before anesthesia. Absence of substance abuse. Absence of preeclampsia or gestational diabetes mellitus. No known history of drug hypersensitivity to dexamethasone or ondansetron. American Society of Anesthesiologists (ASA) physical status classification I–II No use of systemic corticosteroids during the preceding two weeks. No known coagulation disorders (platelet count <100,000/µL, INR ≥1.6, or prolonged PT). No use of anticoagulant medications such as low-molecular-weight heparin (LMWH) within 12 hours before spinal anesthesia, or other antiplatelet medications. Absence of spinal abnormalities (such as severe scoliosis or lumbar tumors) that may interfere with spinal anesthesia Adequate cooperation to complete the questionnaires and assess pain intensity using the Visual Analog Scale (VAS Normal electrocardiogram (ECG)

Exclusion criteria:

Any change in the anesthesia technique Occurrence of surgical or anesthetic complications Prolongation of the surgical procedure to more than 3 hours The patient's desire to withdraw from the study A history of diabetes mellitus

Target sample size: 120