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What is Dopamine given in acute CHF does not act on which of the following receptors and explain in detail?
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