Dexamethasone in the Prevention of Post-spinal Paralytic Ileus After Cesarean Section

Inclusion Criteria: * •All participants will sign an informed consent prior to inclusion in the study. * All patients 18-40 years of full-term singleton pregnancy (37-41 weeks)., * American Society of Anaesthesiologists (ASA) classification class I and II scheduled. * for elective or semi-elective surgery (category 3 and 4 Caesarean sections). * All patients under spinal anesthesia for a Single baby pregnancy of more than 32 weeks will be included in this study. Exclusion Criteria: * will be patients' height \< 150 or \> 180 cm. * Body mass index (BMI) \>35 kg m-2. * Contraindication or refusal to undergo regional anesthesia. * any cardiovascular disease including arrhythmias and severe stenotic valvular heart disease.any renal or hepatic diseased patients.