Hesi Medical Dosage Calculation Proctored Exam
Calculation
A client who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, "Dopamine 400 mg in 5% Dextrose Injection 250 mL." How many mL/hr should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
mL/hour
Explanation & Rationale
Calculate the total dosage per minute: Weight = 91 kg Dosage = 3 mcg/kg/min Total dosage = 91 × 3 = 273 mcg/min Convert mcg to mg: 273 mcg ÷ 1000 = 0.273 mg/min Determine the concentration of the solution: The solution contains 400 mg in 250 mL Concentration = 400 mg ÷ 250 mL = 1.6 mg/mL Calculate the infusion rate in mL/min: Infusion rate = 0.273 mg/min ÷ 1.6 mg/mL = 0.1706 mL/min Convert to mL/hour: 0.1706 mL/min × 60 min/hour ≈ 10.236 mL/hour Round to the nearest tenth: Final answer = 10.2 mL/hour
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