effect of adding dexmedetomidine or fentanyl to levobupivacaine for ultrasound-guided supraclavicular brachial plexus block in upper extremity sugeries

ABSTRACT

Background: Supraclavicular brachial plexus block is one of the most effective anesthetic procedures in operations for the upper extremity. It has gained importance as regional anesthetic technique for surgical, diagnostic and therapeutic purpose in interventional pain management