Dopamine - 25343-4

Question 0

Dopamine - Action (5)

Answer 0

• Dose dependent sympathomimemtic
• 1-2 mcg/kg/mins stimulate dopaminergic receptors > cerebral/renal/mesenteric vasodilation
• 2-10 mcg/kg/mins B1 effects (mainly inotropic) w/ alpha beginning (vasoconstriction)
• 10-20 mcg/kg/mins alpha effects ^renal/mesenteric/peripheral arterial vasoconstriction (increased SVR)
• 20+ mcg/kg/mins - alpha effects similar to norepi w/ peripheral vasoconstriction/tachycardia

Question 1

Dopamine - Class (2)

Answer 1

• Catecholamine

- Sympathomimetic

Question 2

Dopamine - Indications (3)

Answer 2

• Cardiogenic shock
• Other Shock after adequate fluid resuscitation
• symptomatic bradycardia unresponsive to atropine or external PM

Question 3

Dopamine - Side Effects (3)

Answer 3

• Tachyarrhythmias
• HTN > MI
• Tissue necrosis w/ infiltration

Question 4

Dopamine - Contraindications (4)

HUMP

Answer 4

• Hypovolemia prior to fluid resuscitation
• Uncorrected tachyarrhythmias
• Monamine oxidase Inhibitors (MOI)
• Pheochromocytoma (precipate HTN crisis)

Question 5

Dopamine - Precautions (4)

Answer 5

• Monitor VS/EKG
• Stop infusion if BP >90 mmHg
• Doesn’t work w/ Bicarb due to Alkaline deactivating dopamine
• avoid extravasation => tissue necrosis, inform RN