Dexmetomedine as an Adjuvant to Bupivacaine in Ultrasound Guided PECS Block

(Pecs block):the block will be performed with the patients in the supine position.The infraclavicular and axillary regions will be cleaned with antiseptic solution. the inplane technique will be used from proximal and medial to distal and lateral in an oblique manner at dermatome level T2and T3.The puncture site was infiltrated with 2%lidocaine and once the structures is identified with ultrasound.