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: Pharmacology
[{'content': 'Dopamine given in acute CHF does not act on which of the following receptors \nSelect and explain. \nA. D1 receptors, B. β1 receptors, C. α1 receptors, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dopamine is given at the dose of 2 - 10 μg / kg / min in acute CHF, and dopamine acts on α1 receptors only at doses > 10μg / kg / min\n\n\n\nDose\nReceptors\nAction\n\n\n< 2 μg / kg / min\nD1\nRenal vasodilation\n\n\n2 - 10 μg / kg / min\nβ1\nCardiac stimulation\n\n\n> 10 μg / kg / min\nα1\xa0\nVasoconstriction', 'role': 'assistant'}]