Comparative Study Between Intravenous Granisetron and Ondansetron on Their Effect on Hemodynamics and Shivering After Spinal Anesthesia in Elective Cesarean Delivery

"Group A will receive ondansetron 4mg diluted in normal saline,The total volume of the solution infused will kept at 10 mL.~After preloading, patients in the respective group will receive the infusion of the study drug over 1 minute just 5 minutes before performing the subarachnoid block"

"Group B will receive granisetron 1mg diluted in normal saline.The total volume of the solution infused will kept at 10 mL.~After preloading, patients in the respective group will receive the infusion of the study drug over 1 minute just 5 minutes before performing the subarachnoid block"