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A nurse has to administer 8 mg of ondansetron to a client before chemotherapy. A 2 mg/mL multi-dose vial is on hand.
How many mL should be administered to this patient?

A.

6 mL

B.

8 mL

C.

2 mL

D.

4 mL

Answer and Explanation

The Correct Answer is D

The nurse should administer 4 mL to this patient.

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

2 mg / 1 mL = 8 mg / x mL

Cross-multiplying and solving for x gives:

x = 4 mL

Therefore, the nurse should administer 4 mL of ondansetron to deliver 8 mg of the medication to the patient.
 


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Related Questions

Correct Answer is D

Explanation

The safe dose of ertapenem for children is **15 mg/kg** twice daily, with a maximum dose of **500 mg** per dose. Therefore, the correct answer is **d) 15 mg/kg twice daily**. Ertapenem is a carbapenem antibiotic that is used to treat various infections caused by susceptible bacteria.

Correct Answer is A

Explanation

To set the IV pump correctly, you need to calculate the following:

  • The patient's weight in kilograms
  • The dose of Zofran in milligrams
  • The infusion rate in milliliters per hour

First, convert the patient's weight from pounds to kilograms by dividing by 2.2:

176 lb / 2.2 = 80 kg

Next, multiply the patient's weight by the dose of Zofran per kilogram to get the total dose in milligrams:

80 kg x 0.15 mg/kg = 12 mg

Then, use the formula for infusion rate to find how many milliliters per hour the IV pump should deliver:

Infusion rate (mL/h) = (Total volume (mL) x Flow factor (gt/mL)) / Time (min) x 60 min/h

Since the medication is mixed in 50 mL of normal saline and the infusion time is 15 minutes, plug in these values into the formula:

Infusion rate (mL/h) = (50 mL x 1 gt/mL) / 15 min x 60 min/h

Simplify and solve for the infusion rate:

Infusion rate (mL/h) = 200 mL/h

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