Impact of Adding Dexmedetomidine as an Adjuvant to The Local Anesthetic in Quadratus Lumborum Block in Patient Undergoing Caesarean Section

The goal of this clinical trial is to evaluate the effects of adding Dexmedetomidine to local anesthetic agent (bupivacaine) for quadratus lumborum block (QLB) after spinal anesthesia in patient undergoing elective caesarean section. The main questions it aims to answer are: 1. does adding dexmedetomidine enhance analgesia time? 2. does adding dexmedetomidine reduce recovery time? 3. does adding dexmedetomidine lower the need of analgesic medication after surgery? Study include 80 female pregnant non-obese patients scheduled for elective caesarean section.