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A nurse is preparing to administer fluoxetine 15 mg PO to a client who has premenstrual dysphoric disorder. Available is fluoxetine oral solution 20 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["3.8\u00a0"]

Rationale:

How to solve it:

Determine the dosage required: 15 mg

Determine the concentration available: 20 mg/5 mL

Use the formula:

Volume (mL)=Required dose (mg)/Concentration (mg/mL)

Convert the concentration into a simpler fraction:

20 mg/5 mL=4 mg/mL

Calculate the volume:

Volume (mL)=15 mg/4 mg/mL

Simplify the calculation:

Volume (mL)=3.75 mL

Round to the nearest tenth:

3.8 mL

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Correct Answer is B

Explanation

A. The medication should be administered as needed: This interpretation is incorrect because the prescription specifies a regular dosing schedule of twice daily (BID), indicating that it is not PRN (as needed) but rather a scheduled medication.

B. The medication is administered orally: This is correct as the prescription states "PO," which stands for "per os," meaning the medication is to be taken by mouth. This indicates the route of administration and is essential for ensuring the client receives the medication correctly.

C. The nurse should administer 1.5 mg twice daily: This interpretation is incorrect. The prescription specifically indicates a total dose of 3 mg to be taken, not divided into 1.5 mg doses. The correct administration is 3 mg at each dosing time, totaling 6 mg per day.

D. The medication is administered with every meal: This is not specified in the prescription. The dosing schedule of BID does not imply administration with meals unless explicitly stated. The nurse should follow the prescribed timing and not assume meal-related administration without clear instructions.

Correct Answer is ["0.9"]

Explanation

Step by step calculation:

Determinethedosagerequiredinmg:900mg

Understandtheconversionfactor:1g=1000mg

Usetheformula:

Weight(g)=Weight/(mg)1000

Weight(g)=900/mg1000

Calculatetheweight:

Weight(g)=0.9

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Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is reviewing a client's prescription for lorazepam 3 mg PO BID. The nurse should interpret which of the following information from the prescription?

Correct Answer is B

Explanation

A nurse is preparing to administer gabapentin 900 mg PO to a client. The nurse should identify that this is equivalent to how many g? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.9"]

Explanation

A nurse is preparing to administer haloperidol 500 mcg PO to a client. How many mg should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

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A nurse is reviewing a client's medication administration record. The nurse should identify that which of the following prescriptions requires further clarification?

A nurse is preparing to administer mirtazapine 45 mg PO to a client. The nurse should identify that this is equivalent to how many g? (Round the answer to the nearest thousandth. Use a leading zero if it applies. Do not use a trailing zero.)

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