system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Stellate ganglion block is characterised by all of the following except
assistant
The correct answer is  A stellate ganglion block is an injection of local anesthetic in the sympathetic nerve tissue of the neck. These nerves are a pa of the sympathetic nervous system. The nerves are located on either side of the voice box, in the neck.