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Dobutamine hydrochloride 2 mcg/kg/min is prescribed for a client weighing 165 pounds. The solution is mixed with 50 mg of dobutamine In 1,000 mL of DW. The nurse should set the Infusion pump to deliver how many mL/hour? (Enter numeric value only.)
Correct Answer: 180
Rationale: Weight: 165 / 2.2 = 75 kg. Dose: 2 mcg/kg/min × 75 = 150 mcg/min × 60 = 9000 mcg/hour. Concentration: 50 mg = 50000 mcg / 1000 mL = 50 mcg/mL. Volume = 9000 / 50 = 180 mL/hour.
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A client who weighs 154 pounds receives a prescription for epoetin alfa 50 units/kg subcutaneously 3 times a week. The medication is available in 2000 units/ml. vial. How many mL should the nurse administer with each dose? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
Correct Answer: 1.7
Rationale: Weight: 154 × 0.4536 = 69.8544 kg. Dose: 50 units/kg × 69.8544 = 3492.72 units. Volume: 3492.72 / 2000 = 1.74636 mL, rounded to 1.7 mL.
A client is receiving a secondary infusion of vancomycin 1,500 mg in 250 mL to be infused over two hours. The IV administration set delivers 10 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 208
Rationale: Flow rate: (250 mL × 10 gtt/mL) / (2 × 60) = 20.833 gtt/min × 10 = 208.33 gtt/min, rounded to 208.
A client receives a prescription for 1 liter of lactated Ringer's intravenously (IV) to be infused over 12 hours. The IV administration set delivers 60 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 83
Rationale: Volume = 1000 mL, drop factor = 60 gtt/mL, time = 12 hours = 720 minutes. Flow rate = (1000 × 60) / 720 = 83.333 gtt/min, rounded to 83.
The healthcare provider prescribed 2 liters of 5% Dextrose in water (DW) to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many ml/hour should the nurse program the infusion pump? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 83
Rationale: Infusion rate = 2000 mL / 24 hours = 83.333 mL/hour, rounded to 83.
The healthcare provider prescribes metoclopramide 7.5 mg/mL IM every 3 hours PRN vomiting for a client who is receiving chemotherapy. The nurse prepares an injection using a 2 ml. prefilled syringe cartridge labeled, 'metoclopramide 5 mg/mL.' How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Correct Answer: 1.5
Rationale: Volume = 7.5 mg / 5 mg/mL = 1.5 mL.