The Effect of Brachial Plexus Nerve Block on Distal Peripheral Nerve Conduction

Exclusion Criteria

• •Refusal to have a brachial plexus nerve block placed
• •Refusal to have serial nerve conduction studies performed
• •Contraindication for a regional anesthesia nerve block (allergy to local anesthetic, infection at site of injection, elevated coagulation time)
• •Presence of conditions affecting the hand or arm (e.g., injury, infection) that might preclude the performance of nerve conduction studies
• •Presence of known major abnormalities of nerve conduction, e.g., absent median sensory potential in a patient scheduled for carpal tunnel release
• •Presence of conditions affecting the contralateral hand or arm (e.g., injury, infection) that might preclude the performance of sensory and motor studies to test block or absence of a contralateral upper extremity