Dopamine given in acute CHF does not act on which of the following receptors
D1 receptors
β1 receptors
α1 receptors
None of the above
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