The brachial plexus is enveloped by a fascial sheath, formed by prevertebral and scalene fascia, extending from the intervertebral foramina to the upper arm. The foramina of a sheath, at any anatomical point, will allow for the spread of local anaesthetics and subsequent blockade. Each approach to the brachial plexus impacts specific anatomical areas of the upper extremity. Patients were kept Nil per orally for 6 hours before the time of surgery and on the previous night premedicated with Diazepam 5 mg and Ranitidine 150mg. 60 patients ASA I and ASA II were randomly allocated with sealed envelope method into two different groups of 30 each. Both observer and participant were blinded. GROUP A- received (n=30) 25 ml of 0.5% bupivacaine, GROUP B-received (n=30) 25 ml of 0.5% ropivacaine. There was no statistically significant difference in heart rate between both groups (p>0.05). There is no significant difference of heart rate clinically