Pneumothorax is a complication of: (A) Axillary block, (B) Brachial plexus block, (C) Epidural block, (D) High Spinal block
Answer is B. B i.e. Brachial Plexus block Brachial plexus block with interscalene approach provides most intense anesthesia in C5-C7 dermatomes and least intense in C8-T1 (ulnar nerve) area.