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
Dopamine given in acute CHF does not act on which of the following receptors 
Select and explain. 
A. D1 receptors, B. β1 receptors, C. α1 receptors, D. None of the above
C: α1 receptors
Answer: C: α1 receptors 
Explanation: 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



Dose
Receptors
Action


< 2 μg / kg / min
D1
Renal vasodilation


2 - 10 μg / kg / min
β1
Cardiac stimulation


> 10 μg / kg / min
α1 
Vasoconstriction