A nurse will administer Nubain (nalbuphine) 0.3 mg/kg IV over 10 minutes. The Nubain is available in 10 mg/mL. The patient weighs 148 lb.
How many milliliters per minute of Nubain should the nurse administer?
0.2 mL/min
0.4 mL/min
1 mL/min
2 mL/min
2 mL/min
The Correct Answer is A
The patient is ordered to receive 0.3 mg/kg of Nubain IV over 10 minutes. The patient weighs 148 lb, which is equivalent to 67.3 kg. To calculate the total amount of Nubain the patient should receive, multiply the weight by the dosage:
67.3 kg x 0.3 mg/kg = 20.19 mg
The Nubain is available in 10 mg/mL, which means there is 10 mg of Nubain in 1 mL of solution. To calculate how many milliliters of Nubain the patient should receive, divide the total amount of Nubain by the concentration:
20.19 mg / 10 mg per mL = 2.019 mL
To calculate how many milliliters per minute the nurse should administer, divide the total volume of Nubain by the infusion time:
2.019 mL / 10 minutes = 0.2019 mL per minute
Rounding to one decimal place, the nurse should administer 0.2 mL of Nubain per minute to the patient.
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Related Questions
Correct Answer is A
Explanation
To calculate the total amount of heparin, we need to multiply the infusion rate by the time and then by the concentration of heparin in the IV bag. From 9:00 a.m. to 11:00 a.m., the infusion rate was 12 mL/hr, so the amount of heparin infused in this period was 12 mL/hr x 2 hours x 100 units/mL = 2400 units.
From 11:00 a.m. to 2:00 p.m., the infusion rate was 10 mL/hr, so the amount of heparin infused in this period was 10 mL/hr x 3 hours x 100 units/mL = 3000 units. The total amount of heparin infused from 9:00 a.m. to 2:00 p.m. was 2400 units + 3000 units = 5400 units.
Correct Answer is D
Explanation
To calculate the amount of drug per minute, divide the total dose by the infusion time in minutes:
5 mg ÷ 2 minutes = 2.5 mg/minute
The patient should receive 2.5 mg of Lopressor per minute for 2 minutes to get a total dose of 5 mg.
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