Final answer:
c) No response to nerve stimulation. An acceptable response when using a nerve stimulator for a brachial plexus block is no response to nerve stimulation.
Step-by-step explanation:
An acceptable response when using a nerve stimulator for a brachial plexus block is c) No response to nerve stimulation.
During a brachial plexus block, the goal is to block the nerves that supply the arm and hand to achieve anesthesia. A nerve stimulator is used to locate the specific nerves. When the nerve stimulator is used, there should be no response, indicating that the targeted nerve is successfully blocked.
If there is a response, such as muscle twitches or contractions (option a), it could mean that the nerve is not adequately blocked and the anesthesia may not be effective. A complete loss of sensation (option b) would be the desired outcome. Mild tingling or paresthesia (option d) may indicate incomplete anesthesia.