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A nurse has to administer 0.05 mcg/kg of a medication to an infant who weighs 7 kg.
Calculate the dose that the nurse should administer to the infant.

A.

0.35 mcg

B.

350 mcg

C.

35 mcg

D.

3.5 mcg

Answer and Explanation

The Correct Answer is A

The nurse should administer 0.35 mcg of medication to the infant.
 
This answer is correct because it is based on a simple multiplication calculation. The nurse should multiply the prescribed dose per kilogram by the infant's weight in kilograms to get the total dose in micrograms, as follows:

0.05 mcg/kg x 7 kg = 0.35 mcg

Therefore, the nurse should administer 0.35 mcg of medication to the infant.
 


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Related Questions

Correct Answer is C

Explanation

the correct rate to administer the maintenance dose is 50 mL/hr.

Step 1: Determine the concentration of magnesium sulfate in the solution.

  • There are 40 grams of magnesium sulfate in 1 liter of solution.
  • 1 liter = 1000 mL.

Step 2: Calculate the concentration in grams per mL.

  • 40 grams ÷ 1000 mL = 0.04 grams per mL.
  • Result: 0.04 grams per mL.

Step 3: Determine the required dose per hour.

  • The physician ordered 2 grams per hour.

Step 4: Calculate the volume of solution needed to provide 2 grams of magnesium sulfate.

  • Required dose (2 grams) ÷ concentration (0.04 grams per mL) = volume in mL.
  • 2 grams ÷ 0.04 grams per mL = 50 mL.
  • Result: 50 mL.
  • The calculated rate is 50 mL/hr.

the correct rate to administer the maintenance dose is 50 mL/hr.

Correct Answer is C

Explanation

The nurse should add 250 mL of water to the formula to dilute it to half strength.

This answer is correct because it is based on a simple ratio and proportion calculation. The nurse can set up a proportion as follows:

250 mL / 1 = x mL / 0.5

Cross-multiplying and solving for x gives:

x = 500 mL

Therefore, the nurse should add 250 mL of water to the formula to make a total volume of 500 mL, which is half the concentration of the original formula.

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