A nurse is preparing to administer 40 mg of famotidine PO at bedtime.

If the available famotidine is 20 mg/tablet, how many tablets should the nurse administer?

Answer and Explanation

The Correct Answer is ["2"]

The nurse should administer 2 tablets of famotidine. Here’s the calculation: Step 1: The total dosage required is 40 mg.

Step 2: Each tablet contains 20 mg of famotidine.

Step 3: So, the number of tablets required is 40 mg ÷ 20 mg/tablet = 2 tablets.

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Correct Answer is D

Explanation

The correct answer is choice D. Regular insulin 35 units subcutaneously 30 minutes before meals.

Choice A rationale:

Desvenlafaxine 50 mg PO daily is a standard dosage for this antidepressant medication and does not typically require clarification unless there are specific patient concerns or contraindications.

Choice B rationale:

Ketorolac nasal spray, one spray in each nostril every 6 hours as needed for moderate pain, is an appropriate prescription. However, it is important to monitor for potential side effects, especially with prolonged use.

Choice C rationale:

Oxycodone 10 mg PO every 4 hours as needed for severe pain is a common prescription for managing severe pain. The nurse should ensure the patient is monitored for signs of opioid misuse or adverse effects.

Choice D rationale:

Regular insulin 35 units subcutaneously 30 minutes before meals is an unusually high dose and could lead to hypoglycemia. This prescription should be clarified with the provider to ensure it is accurate and safe for the patient.

Correct Answer is ["15 "]

Explanation

Step 1: Convert the client’s weight from pounds to kilograms. 1 kg = 2.2 lb, so 44 lb ÷ 2.2 = 20 kg.

Step 2: Calculate the total daily dose of phenobarbital. The doctor ordered 6 mg/kg/day, so 6 mg/kg/day × 20 kg = 120 mg/day.

Step 3: Divide the total daily dose into two equal doses, as it is to be given every 12 hours. So, 120 mg/day ÷ 2 = 60 mg/dose.

Step 4: Calculate the volume of phenobarbital elixir to administer per dose. The available phenobarbital elixir is 20 mg/5 mL, so (60 mg ÷ 20 mg) × 5 mL = 15 mL. The nurse should administer 15 mL of phenobarbital elixir per dose.

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A nurse is preparing to administer 40 mg of famotidine PO at bedtime. If the available famotidine is 20 mg/tablet, how many tablets should the nurse administer?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is reviewing new prescriptions for a newly admitted patient. Which of the following prescriptions should the nurse seek further clarification from the provider?

Correct Answer is D

Explanation

A nurse is preparing to administer phenobarbital 6 mg/kg/day PO divided in equal doses every 12 hr to a client who weighs 44 lb. If the available phenobarbital elixir is 20 mg/5 mL, how many mL should the nurse administer per dose?

Correct Answer is ["15 "]

Explanation

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A nurse is preparing to administer 40 mg of famotidine PO at bedtime. If the available famotidine is 20 mg/tablet, how many tablets should the nurse administer?

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A nurse is preparing to administer 40 mg of famotidine PO at bedtime.

If the available famotidine is 20 mg/tablet, how many tablets should the nurse administer?