BKAT Medications questions with correct answers
Nitroprusside CORRECT ANSWER Mechanism of Action: Decreases Preload and AFTERLOAD through vasodilation Side effects/Precautions: - No sunlight - Cyanide toxicity - Hypotension Used for: acute hypertensive episodes Dobutamine CORRECT ANSWER Mechanism of Action: Positive inotrope- effects contractility Dopamine CORRECT ANSWER Low dose (0.5-4mcg): Stimulates dopaminergic receptors and increases renal and mesenteric perfusion "Renal dose" Mid-range dose (4-10mcg): Stimulates beta receptors to increase contractility and heart rate High range dose (greater than 10mcg): Stimulates alpha receptors - vasoconstriction and increase in BP Side effects: - Ventricular dysrhythmias - Tachycardia - Infiltration = necrosis (Vasoconstriction of capillary beds) Antidote: regitine (phentolamine) - same for levophed necrosis
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