Which of the following doses of dopamine (Intropin)results in stimulation of beta? receptors and increased myocardial contractility?

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At low dosages of 1 to 2 mcg/kg/min, dopamine stimulates dopaminergic receptors, causing renal and mesenteric vasodilation.Moderate dosages result in stimulation of beta? receptors to increase myocardial contractility and improve cardiac output.At dosages greater than 10 mg/kg/min, dopamine predominantly stimulates alpha receptors, resulting in vasoconstriction that often negates both the beta-adrenergic and dopaminergic effects.

Which of the Following Doses of Dopamine (Intropin)results in Stimulation