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)?

100 mL/hr

250 mL/hr

500 mL/hr

1000 mL/hr

Answer and Explanation

The Correct Answer is B

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.

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Correct Answer is C

Explanation

The number of tablets and their weight only provide information about the total amount of medication in the vial (100 tablets x 333 mg = 33,300 mg or 33.3 g).

A. 1.71 mL B. 5.7 mL C. 10 mL D. 17.1 mL

Correct Answer is B

Explanation

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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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)?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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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)?