This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
[{'content': "Which of the following is not a sign of successful stellate ganglion block – \nSelect and explain. \nA. Nasal stuffness, B. Guttman sign, C. Homer's syndrome, D. Bradycardia", 'role': 'user'}, {'content': "Answer: D \nExplanation: Signs of successful stellate ganglion block :- Horner's syndrome, flushing of face, conjuctival congestion, nasal stuffiness (Guttman's sign), injection of tympanic membrane (Mueller's syndrome), increased skin temprature, lacrimation.", 'role': 'assistant'}]