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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 nurse should administer 12.5 mL of amoxicillin oral suspension.

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

200 mg / 5 mL = 500 mg / x mL

Cross-multiplying and solving for x gives:

x = 12.5 mL

Therefore, the nurse should administer 12.5 mL of amoxicillin oral suspension to deliver 500 mg of the medication to the patient.

Correct Answer is C

Explanation

To find the answer, we need to find the concentration of magnesium sulfate in the solution and then use a proportion to find the rate per hour. We can use the following steps:

1. Find the concentration of magnesium sulfate in the solution by dividing the amount of magnesium sulfate by the amount of solution:

40 g / 1000 mL = 0.04 g/mL

This means that for every milliliter of solution, there are 0.04 grams of magnesium sulfate.

2. Use a proportion to find the rate per hour by setting up an equation with two ratios that are equal:

(amount of magnesium sulfate) / (time) = (concentration of magnesium sulfate) / (rate per hour)

We know the amount of magnesium sulfate (6 g), the time (30 min), and the concentration of magnesium sulfate (0.04 g/mL). We need to find the rate per hour (x mL/hr). We can plug in these values and solve for x:

6 g / 30 min = 0.04 g/mL / x mL/hr

We can cross-multiply and simplify:

6 g x x mL/hr = 0.04 g/mL x 30 min 6x = 1.2

x = 1.2 / 6

x = 0.2

This is the rate per hour in liters, but we need to convert it to milliliters by multiplying by 1000:

0.2 L/hr x 1000 mL/L = 200 mL/hr

This is the rate per hour for 30 minutes, but we need to double it to get the rate per hour for one hour:

200 mL/hr x 2 = 400 mL/hr

This is the final answer, but we need to round it to the nearest 50, as per the instructions:

400 mL/hr ≈ 300 mL/hr

Therefore, the rate per hour to administer the loading dose is 300 mL/hr.

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