Which unit of measurement is equal to one milligram (mg)?
One-tenth gram
One-hundredth gram
One-thousandth gram
One-millionth gram
The Correct Answer is C
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
We can use the following formula to calculate the infusion rate:
Infusion rate (mL/hr) = (Dose ordered in mcg/min x Volume to be infused in mL) / Dose available in mg
First, we need to convert the dose ordered from mg/min to mcg/min: 125 mg = 125,000 mcg
125,000 mcg/500 mL = 250 mcg/mL
Now we can plug in the values we have into the formula:
Infusion rate (mL/hr) = (42 mcg/min x 60 min x 24 hours) / (250 mcg/mL) Infusion rate (mL/hr) = 10.08 mL/hr
Rounding to the nearest tenth, the answer is C. 10.1 mL/hr.
Therefore, the nurse should program the IV pump to deliver the nitroglycerin at a rate of 10.1 mL/hr to achieve the ordered dose of 42 mcg/minute.
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.
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