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You are reconstituting a powdered medication. The manufacturer's label states to add 3 mL of diluent to achieve a concentration of 200 mg/mL. How much medication should you draw up to administer a dose of 600 mg?

3 mL

1.5 mL

2 mL

4 mL

Answer and Explanation

The Correct Answer is A

Calculation:

Concentration: 200 mg/mL

Ordered Dose: 600 mg

Calculate the volume to administer

Volume to administer = Ordered Dose ÷ Concentration

Volume to administer = 600 ÷ 200

Volume to administer = 3 mL

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Correct Answer is C

Explanation

A. Consult the pharmacist: Consulting the pharmacist is important for clarification on medication safety and administration, but the first action should be to notify the prescriber to confirm or adjust the order to match safe practice.

B. Administer the medication orally: Administering the medication via an incorrect or unapproved route can result in reduced efficacy, toxicity, or harm. It is unsafe to proceed without verification.

C. Notify the prescriber for clarification: The prescriber must confirm or modify the order if the route is not recommended. This ensures the medication is given safely and appropriately, preventing potential adverse events.

D. Hold the medication indefinitely: Holding the medication without seeking clarification may delay essential treatment. While temporary withholding is acceptable, the nurse must actively communicate with the prescriber rather than leaving the situation unresolved.

A. 2 mL B. 15 ml C. 1 mL D. 0.5 mL

Correct Answer is C

Explanation

Calculation:

Identify the ordered dose and available concentration

Ordered Dose: 50 mg

Available Concentration: 100 mg/2 mL

Calculate the volume to administer

Volume to administer = (Ordered Dose ÷ Concentration) × Volume of Concentration

Volume to administer = (50 ÷ 100) × 2

Volume to administer = 0.5 × 2

Volume to administer = 1 mL

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You are reconstituting a powdered medication. The manufacturer's label states to add 3 mL of diluent to achieve a concentration of 200 mg/mL. How much medication should you draw up to administer a dose of 600 mg?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which action should a nurse take first if they discover the ordered route for a medication is not recommended on the medication label?

Correct Answer is C

Explanation

A nurse must calculate the dosage of a medication labeled 100 mg/2 mL. If the prescription is for 50 mg, how many mL should be administered?

Correct Answer is C

Explanation

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You are reconstituting a powdered medication. The manufacturer's label states to add 3 mL of diluent to achieve a concentration of 200 mg/mL. How much medication should you draw up to administer a dose of 600 mg?