This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, 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: Cocaine in the periphery blocks uptake of NA and adrenaline into adrenergic nerve endings,resulting in higher concentration of the transmitter around the receptors leading to sympathomimetic effect thats is vasoconstriction , tachycardia,rise in BP , mydriasis. From KD Tripati 7th edition Page no 365', 'role': 'assistant'}]