Magnesium sulfate with Local Anesthetics versus Local Anesthetics Alone in Supraclavicular Brachial Plexus Block in Upper Limb Surgeries

Abstract

Background Brachial plexus is a network of nerves that arises from the neck passing through the axilla to supply the whole upper limb with motor and sensory supply. Our target in upper limb surgeries is to block this plexus using local anesthetics. Different adjuvants have been mixed with local anesthetics (LAs) for peripheral nerve blocks (PNBs). These drugs usually affect may delay the onset of action and prolong the duration of analgesia. Objective The aim of the present study was to compare the effect of Magnesium with bupivacine vesus bupivacine alone in supraclavicular nerve block ultrasound guided in upper limb surgeries Patients and Methods In our study 82 patients are randomly divide into two equal groups, control group received only bupivacine 0.5 % and magnesium group received 250 mg in addition to bupivacine 0.5% Results Our study showed that addition of 150 mg of magnesium to bupivacine in ultra sound guided supraclavicular block prolong the onset time of both sensory and motor block (p value >0.05) non significant. But it significantly prolonged their duration, p value <0.05 for sensory block and <0.001 for motor block which was highly significant Conclusion Addition of magnesium also did not affect the hemodynamics as regard systolic, diastolic blood pressure and o2 saturation. The previous findings proved that adding magnesium to bupivacine is more superior than the use of bupivacine alone.