This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
[{'content': 'All are vasodilators except. \nSelect and explain. \nA. Procaine, B. Lidocaine, C. Cocaine, D. Chlorprocaine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (C) Cocaine(Ref: Katzung 11th/e p448)All local anaesthetics cause vasodilation except cocaine. It blocks reuptake of nor-adrenaline and result in sympathetic overactivity. Therefore, cocaine can cause hypertension and cardiac arrhythmias.', 'role': 'assistant'}]