A physician gives the following order: "Infuse 0.9% sodium chloride solution, 2.5 L over 15 hours." What is the mL/hr flow rate for continuous infusion?

41.67 mL/hr

166.67 mL/hr

250 mL/hr

1000 mL/hr

Answer and Explanation

The Correct Answer is B

To calculate the flow rate in mL/hr for a continuous infusion, we need to divide the total volume to be infused by the total time of infusion, and then convert the units as necessary.

In this case, the total volume is 2.5 L, which is equivalent to 2500 mL (1 L = 1000 mL), and the total time is 15 hours.

Flow rate = Total volume to be infused / Total time of infusion Flow rate = 2500 mL / 15 hours

Flow rate = 166.67 mL/hr

Therefore, the flow rate for continuous infusion of 0.9% sodium chloride solution in this case is 166.67 mL/hr.

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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.

A. 56 mL B. 64 mL C. 65 mL D. 88 mL

Correct Answer is B

Explanation

Step 1: Determine the dosage ratio. 60 mg (ordered) ÷ 70 mg (available) = 0.8571 (rounded to 4 decimal places)

Step 2: Calculate the volume to administer. 0.8571 × 75 mL (available) = 64.2857 mL (rounded to 4 decimal places)

Step 3: Round to the nearest whole number. 64.2857 mL rounds to 64 mL

So, the nurse should administer 64 mL to the patient.

The correct answer is B. 64 mL.

The correct answer is B. 64 mL.

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A physician gives the following order: "Infuse 0.9% sodium chloride solution, 2.5 L over 15 hours." What is the mL/hr flow rate for continuous infusion?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A patient is ordered 5 mg of IV Lopressor (metoprolol tartrate) to be administered over 2 minutes. The concentration is 1 mg/mL. How many milligrams per minute should the patient receive?

Correct Answer is D

Explanation

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Correct Answer is B

Explanation

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