Task: Answer Verification
Input (English): Question: Does fentanyl improve the nerve block characteristics of axillary brachial plexus anaesthesia performed with ropivacaine?
Answer: The addition of fentanyl 1 microg. ml-1 to ropivacaine 7.5 mg. ml-1 does not improve the nerve block characteristics of axillary brachial plexus anaesthesia for orthopaedic procedures involving the hand.
Output (English): no