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?

6 mL

8 mL

2 mL

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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Correct Answer is C

Explanation

To find the hours to finish the infusion, you need to calculate the following:

- The volume of saline solution in milliliters
- The time in hours using the formula: Time (h) = Total volume (mL) / Infusion rate (mL/h)

First, convert the volume of saline solution from liters to milliliters by multiplying by 1000:

1.5 L x 1000 = 1500 mL

Next, use the formula for time to find how many hours it will take to infuse the saline solution at the current rate:

Time (h) = Total volume (mL) / Infusion rate (mL/h)

Since the total volume is 1500 mL and the infusion rate is 75 mL/h, plug in these values into the formula:

Time (h) = 1500 mL / 75 mL/h

Simplify and solve for the time:

Time (h) = 20 h

Therefore, it will take **20 hours** to finish the infusion at the current rate.

A. 205.9 mg B. 23.8 mg C. 2.3 mg D. 6.8 mg E. 6.8 mg

Correct Answer is B

Explanation

To find the dose of ondansetron, you need to use the formula for weight-based dosage calculation:

Dose (mg) = Weight (kg) x Prescribed dose (mg/kg)

Since the client's weight is 70 kg and the prescribed dose is 0.34 mg/kg, plug in these values into the formula:

Dose (mg) = 70 kg x 0.34 mg/kg

Simplify and solve for the dose:

Dose (mg) = 23.8 mg

Therefore, the client should receive **23.8 mg** of ondansetron prior to chemotherapy.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client is receiving an intravenous infusion of 1.5 L of saline solution at a rate of 75 mL/hr. How many hours will it take to finish the infusion at the current rate?

Correct Answer is C

Explanation

A cancer client who weighs 70 kg is scheduled for chemotherapy. A nurse has to administer ondansetron 0.34 mg/kg, 30 minutes prior to chemotherapy. What is the dose of ondansetron this client should receive?

Correct Answer is B

Explanation

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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?