Clinical trials

((82)) patients scheduled to undergo elective CABG by the same surgical team will be allocated randomly by computer-generated random numbers into two equal groups (n= 41). Study groups: Group S (Stellate Ganglion Block Group): Patients will receive an ultrasound-guided Left stellate ganglion block prior to induction of general anesthesia. The block will be performed at the C6 level under strict aseptic precautions using 5 mL of 0.25% bupivacaine. Successful blockade will be confirmed by the appearance of ipsilateral Horner's syndrome. Group C (Control Group): Patients will receive standard perioperative care without stellate ganglion block and will undergo the same anesthetic and surgical management protocol as Group S.