This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional anaesthesia, Subject name: Anaesthesia
[{'content': "Which of the following is not a sign of succesfull stellate ganglion block- \nSelect and explain. \nA. Nasal stuffness, B. Guttman sign, C. Horner's syndrome, D. Bradycardia", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Signs of successful stellate ganglion block Horner&;s syndrome Flushing of face Lacrimation/ Increased tear production Infection of tympanic membrane(Muller syndrome) Stuffy nose (Guttman&;s sign) Increased temprature of face and upper extremity on ipsilateral side of block Venodilation in the ipsilateral extremity', 'role': 'assistant'}]