Effectiveness of Low Volume Versus High Volume of Local Anesthetic in Ultrasound Guided Combined Supraclavicular and Interscalene Block for Upper Limb Surgery

Group A; will receive ultrasound guided combined Supraclavicular Block (SCB) with 7-10 ml (3.5-5 ml bupivacaine 0.5% plus 3.5-5 ml lidocaine 2%) and Interscalene Block (ISB) with 7-10 ml (3.5-5 ml bupivacaine 0.5% plus 3.5-5 ml lidocaine 2%).

Group B; High volume local anesthetics in ultrasound guided combined Supraclavicular Block (SCB) with 15-20 ml (7.5-10ml bupivacaine 0.5% plus 7.5-10 ml lidocaine 2%) and Interscalene Block (ISB) with 15-20 ml (7.5-10 ml bupivacaine 0.5% plus 7.5-10 ml lidocaine 2%).