Dopamine

Question 1

Dopamine:class

Answer 1

sympathomimetic

Question 2

Dopamine:route

Answer 2

IV piggyback

Question 3

Dopamine:dose

Answer 3

bradycardia - 2-10 mcg/kg per mincardiogenic shock - 5-10 mcg/kg per minpost cardiac arrest hypotension - 5-10 mcg/kg per min

Question 4

Dopamine:pedi dose

Answer 4

not used in pre-hospital setting

Question 5

Dopamine:dilution

Answer 5

400 mg/250 mL D5W/NS800 mg/500 mL D5W/NSyield 1600 mcg/mL

Question 6

Dopamine:drug actions

Answer 6

Low doses - dopaminergic effects; increases perfusion to kidneys and abdominal organs.Moderate doses - stimulate beta 1 receptors causing beta 1 adrenergic effects that increase the rate and force of ventricular contractions.High doses - alpha adrenergic effect producing peripheral arterial and venous constriction.

Question 7

Dopamine:onset and duration

Answer 7

onset: 2-4 minutesduration: 10-15 minuteselimination: 24 hours

Question 8

Dopamine:indications

Answer 8

hemodynamically significant hypotension in the absence of hypovolemia - hypotension, SBP 70-90, with S/S of cardiogenic shock; includes post cardiac arrest treatment of hypotension SBP<90Symptomatic bradycardia if atropine is ineffective(second line drug)

Question 9

Dopamine:precautions

Answer 9

moniter BP and spO2patient on cardiac monitor12 leadIV access with large cathmonitor urinary outputflush after givingdont mix with sodium bicarbonateuse infusion pump if possiblecorrect hypovolemia first - don’t use vasopressors

Question 10

Dopamine:interactions

Answer 10

inactivated in alkaline solutions(like bicarb)- may cause precipitation;beta blockers may blunt the inotropic response; phenytoin(Dilantin) - used for seizures - may cause hypotension, bradycardia, and seizures; MAO inhibitors - may potentiate effects

Question 11

Dopamine:side effects

Answer 11

tachycardia- dose related; hypertension; increased myocardial oxygen demand- angina; headache; anxiety; nausea and vomiting; palpitations; ventricular arrhythmias- especially with high doses; tissue necrosis

Question 12

Dopamine:contraindications

Answer 12

hypovolemic shock; tachydysrhythmias; ventricular fibrillation; patients with pheochromocytoma(adrenal gland tumor)