dopamine

Question 1

dopamine (class 2)

Answer 1

sympathomimetic (naturally occurring catecholamine)

vasopressor with dopaminergic, alpha, and beta adrenergic properties

Question 2

dopamine (actions 4)

Answer 2

acts on alpha/beta adrenergic receptors as well as on dopamine receptors

at dosages from 1-10mcg/kg/min: acts primarily on beta receptors causing positive inotropic effect on the heart. dilates blood vessels supplying brain, kidneys, heart, and GI

at dosages greater than 10mcg/kg/min: begins to stimulate alpha receptors, resulting in peripheral vasoconstriction

increases systolic bp and pulse pressure

Question 3

dopamine (indications 5; 1,2,5,1,1)

Answer 3

hypotension associated with chest pain (suspected cardiogenic shock)

anaphylaxis in extremis (severe hypotension, severe respiratory distress) if pt still has hypotension after epi and fluids

symptomatic bradycardias with a pulse (chest pain, SOB, decreased LOC, BP less than 90 systolic, pulmonary congestion) after atropine

respiratory distress of suspected cardiag etiology (chf)

shock/hypotension

Question 4

dopamine (dosage/route)

Answer 4

400mg/250ml NS at 2-20mcg/kg/min titrated to systolic bp and cardiac rhythm response

Question 5

dopamine (side effects 2)

Answer 5

ventricular irritability

hypertension & extreme vasoconstriction can occur with high infusion rates