A nurse has to administer 17.1 mg of ondansetron to a client before chemotherapy. The 10 mL vial contains 3 mg/mL.
How much solution should the nurse withdraw from the vial?

1.71 mL

5.7 mL

10 mL

17.1 mL

Answer and Explanation

The Correct Answer is B

The amount of solution the nurse should withdraw from the vial can be calculated using the following formula:

Amount of solution = Amount of medication needed / Concentration of medication in the solution.

In this case, the amount of medication needed is 17.1 mg and the concentration of medication in the solution is 3 mg/mL. Substituting these values into the formula, we get:

Amount of solution = 17.1 mg / 3 mg/mL = 5.7 mL

Therefore, the answer is B. The nurse should withdraw 5.7 mL of solution from the vial.

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Correct Answer is B

Explanation

To calculate the infusion rate in mL/hr, we need to divide the total volume to be infused by the time for infusion and convert the units appropriately.

First, we need to convert the time of infusion from hours to minutes, since most IV pumps use minutes as the time unit.

2 hours x 60 minutes/hour = 120 minutes Next, we can calculate the infusion rate:

500 mL ÷ 120 minutes = 4.17 mL/minute

To convert mL/minute to mL/hour, we multiply by 60:

4.17 mL/minute x 60 minutes/hour = 250 mL/hour

Therefore, the correct answer is B. 250 mL/hr. The nurse should set the IV pump to deliver the LR infusion at a rate of 250 mL/hr to infuse 500 mL over 2 hours.

A. 0.65 mL/hr B. 9.6 mL/hr C. 10.1 mL/hr D. 14.8 mL/hr

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.

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A nurse has to administer 17.1 mg of ondansetron to a client before chemotherapy. The 10 mL vial contains 3 mg/mL. How much solution should the nurse withdraw from the vial?

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Naxlex Comprehensive Predictor Exams

A physician gives the following order: "Infuse LR, 500 mL over 2 hours." At what rate should the nurse set the IV pump to deliver this infusion (mL/hr)?

Correct Answer is B

Explanation

Nitroglycerin 125 mg diluted in 500 mL D5W (dextrose 5% in water) is infusing at a rate of 42 mcg/minute for a patient with chest pain. What rate (in mL/hr) should the nurse program into the IV pump to deliver this dose? Round your answer to the nearest tenth.

Correct Answer is C

Explanation

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A nurse has to administer 17.1 mg of ondansetron to a client before chemotherapy. The 10 mL vial contains 3 mg/mL.
How much solution should the nurse withdraw from the vial?