The effect of adding Magnesium sulfate to Bupivcaine in Supraclavicular Brachial Plexus Block in Upper Limb Surgeries

Abstract

rachial plexus is a bundle of nerves that arises from the neck crossing through the axilla to supply the whole upper limb with motor and sensory supply. The aim in upper limb surgeries is to block this plexus using local anesthetics. There is a great importance to the use of the ultrasound in clinical practice of anesthesia and regional nerve block. It improves patient safety by preventing block complications such as pneumothorax, hematoma formation, improper block or intravascular injection. Different adjuvants have been added to local anesthetics (LAs) for peripheral nerve blocks (PNBs). These drugs usually delay the onset of action and prolong the duration of analgesia. They limit the total dose of LA used and related side effects. Magnesium sulfate (MgSO4) is a N-Methyl-D-aspartate (NMDA) receptors antagonist, its role has been evaluated for the analgesic properties in anesthesia. MgSO4 is a promising agent as an adjuvant with LAs in pNBs. The aim of the present study was to compare the effect of Magnesium with bupivacine versus bupivacine alone in supraclavicular nerve block ultrasound guided in upper limb surgeries below elbow.