HESI RN MED-SURG 3 PROCTORED EXAM
Calculation
The healthcare provider (HCP) prescribes dopamine 2 mcg/kg/min IV for client who weighs 60 kg. The IV bag contains "Dopamine 400 mg in dextrose 5% in water (DW) 500 mL." The nurse should program the infusion pump to deliver how many mL/hour? (Enter numerical value only.)
mL/hour
Explanation & Rationale
Calculation: Calculate the dopamine dose in mcg/min: Dose = 2 mcg/kg/min Weight = 60 kg Dose per minute = 2 mcg/kg/min × 60 kg = 120 mcg/min Calculate the dopamine dose in mcg/hour: Dose per hour = 120 mcg/min × 60 min/hour = 7200 mcg/hour Convert mcg to mg: Dose per hour = 7200 mcg/hour / 1000 mcg/mg = 7.2 mg/hour Calculate the concentration of dopamine in the IV bag: Dopamine: 400 mg Solution: 500 mL Concentration = 400 mg / 500 mL = 0.8 mg/mL Calculate the infusion rate in mL/hour: Dose per hour: 7.2 mg/hour Concentration: 0.8 mg/mL Infusion rate = 7.2 mg/hour / 0.8 mg/mL = 9 mL/hour
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