Transversalis Fascia Plane Block Versus Intrathecal Dexmedetomidine in Patients Undergoing Cesarean Section

Patients will receive spinal anesthesia (using 2.5 mL of hyperbaric bupivacaine 0.5%) with bilateral transversalis fascia plane (TFP) block (using 20 mL of bupivacaine 0.25%) at the end of surgery.

Patients will receive spinal anesthesia (using 2.5 mL of hyperbaric bupivacaine 0.5%) + (5 µg intrathecal dexmedetomidine diluted in 0.5ml saline) with a sham block at the end of surgery.