A physician ordered 5 mL 10% dextrose stat. The only dextrose available is a vial of 5 mL 50% dextrose.
How can the nurse provide the appropriate dose?

Dextrose 50%, add 1 mL to 4 mL injectable saline

Dextrose 50%, add 2 mL to 3 mL injectable saline

Dextrose 50%, add 3 mL to 2 mL injectable saline

Dextrose 50%, add 4 mL to 1 mL injectable saline

Answer and Explanation

The Correct Answer is A

Dextrose 50%, add 1 mL to 4 mL injectable saline. To obtain 5 mL of 10% dextrose, 0.5 mL of the 50% dextrose should be diluted with 4.5 mL of sterile water or normal saline. Therefore, the nurse should add 1 mL of the 50% dextrose to 4 mL of injectable saline to get a final concentration of 10% dextrose in 5 mL. This will give the client the appropriate dose.

Choice B is incorrect because adding 2 mL of the 50% dextrose to 3 mL of saline would give a final concentration of 20%, which is higher than the prescribed concentration of 10%.

Choice C is incorrect because adding 3 mL of the 50% dextrose to 2 mL of saline would give a final concentration of 30%, which is significantly higher than the prescribed concentration of 10%.

Choice D is incorrect because adding 4 mL of the 50% dextrose to 1 mL of saline would give a final concentration of 40%, which is much higher than the prescribed concentration of 10%.

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Correct Answer is B

Explanation

We can use the formula for calculating infusion time:. Infusion time = Total volume / Infusion rate.

First, we need to convert the volume of the fluid from liters to milliliters:.

0.75 L = 750 mL.

Next, we can plug in the values we have:. Infusion time = 750 mL / 120 mL/hr.

Infusion time = 6.25 hours.

Since the infusion was started at 9:00 a.m., we can add 6.25 hours to determine when the infusion will be completed:.

9:00 a.m. + 6.25 hours = 3:15 p.m..

Therefore, the infusion will be completed at 3:15 p.m.

A. 2 mL B. 3 mL C. 4 mL D. 5 mL

Correct Answer is C

Explanation

The ordered dose is 400 mcg, which is equal to 0.4 mg..

The medication is provided as 0.1 mg/mL, so to administer 0.4 mg, the nurse needs to give:.

0.4 mg ÷ 0.1 mg/mL = 4 mL.

Therefore, the nurse should administer 4 mL of atropine sulfate.

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A physician ordered 5 mL 10% dextrose stat. The only dextrose available is a vial of 5 mL 50% dextrose. How can the nurse provide the appropriate dose?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

At 9:00 a.m. a nurse starts an intravenous (IV) infusion for a client at the rate of 120 mL/hr. If the volume of the fluid is 0.75 L, when will this infusion be completed?

Correct Answer is B

Explanation

A healthcare provider orders atropine sulfate 400 mcg IM as a preoperative medication. The medication is provided as 0.1 mg/mL. How many mL should the nurse administer?

Correct Answer is C

Explanation

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A physician ordered 5 mL 10% dextrose stat. The only dextrose available is a vial of 5 mL 50% dextrose.
How can the nurse provide the appropriate dose?