How it Works
Try Naxlex NCLEX-RN (Free-Trial)

Amoxicillin 500 mg is ordered for a patient with a sinus infection. Amoxicillin oral suspension 200 mg per 5 mL is available.
How many mL should the nurse administer?

A.

5.5 mL

B.

10.5 mL

C.

12.5 mL

D.

15.5 mL

Answer and Explanation

The Correct Answer is C

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.
 


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is A

Explanation

The IV infusion will be completed at 13:20.

This answer is correct because it is based on a simple division and addition calculation. The nurse can divide the total volume of the infusion by the infusion rate to get the duration of the infusion in hours, as follows:

1000 mL / 250 mL/hr = 4 hr

Therefore, the infusion will take 4 hours to complete. The nurse can add 4 hours to the start time of the infusion to get the end time, as follows:

09:20 + 4:00 = 13:20

Therefore, the IV infusion will be completed at 13:20.

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.

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register