Hesi rn dosage calculation d441 proctored exam
Calculation
The healthcare provider prescribes dobutamine 6 mcg/kg/min IV for a client who weighs 140 pounds. The IV bag contains dobutamine 250 mg in 250 mL dextrose 5% in water (DW). 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
Given Information: Prescribed dose: 6 mcg/kg/min Patient weight: 140 pounds Dobutamine concentration: 250 mg/250 mLConvert weight to kilograms 1 pound is approximately 0.453592 kilograms 140 pounds x 0.453592 = 63.5 kilograms (approximately 64 kilograms) Calculate the total dose in mcg/min Total dose = Prescribed dose x Weight Total dose = 6 mcg/kg/min x 64 kg = 384 mcg/min Convert mcg/min to mg/hour 384 mcg/min x 60 min/hour = 23,040 mcg/hour = 23.04 mg/hour Calculate the infusion rate in mL/hour Infusion rate = (Total dose in mg/hour) / (Concentration in mg/mL) Infusion rate = 23.04 mg/hour / (250 mg/250 mL) = 22.94 mL/hour Round to the nearest tenth (as instructed) Infusion rate = 22.9 mL/hour
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