A nurse is preparing to administer methylphenidate 18 mg PO to a school-age child who has attention deficit disorder. Available is methylphenidate oral solution 10 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2"]
Step 1: The dose to be administered is 18 mg of methylphenidate.
Step 2: The available methylphenidate oral solution has a concentration of10 mg/mL. This means that for every 1 mL of the solution, there are 10 mg of methylphenidate.
Step 3: To find out how many mL should be administered, we divide the dose by the concentration. So, 18 mg ÷ 10 mg/mL = 1.8 mL.
Step 4: Round the answer to the nearest whole number. So, 1.8 mL rounds to2 mL.
The nurse should administer 2 mL of methylphenidate oral solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer is choice D. Route.
Choice A rationale:
The medication name, lorazepam, does not need clarification as it is a commonly prescribed benzodiazepine, known for its effectiveness in treating anxiety and its off-label use as a sleep aid.
Choice B rationale:
The dosage of 4 mg at bedtime falls within the typical dosing range for lorazepam when used for insomnia caused by anxiety or transient situational stress in adults. However, it is on the higher end of the spectrum, and lower doses are often recommended, especially for older adults.
Choice C rationale:
The frequency, ‘at bedtime’, is appropriate for lorazepam when prescribed as a sleep aid, as it is typically taken as a single dose at night.
Choice D rationale:
The route should be clarified. Lorazepam can be administered orally in tablet form or as an oral solution, and the prescription should specify this to ensure proper administration. Additionally, if the patient has difficulty swallowing, the route of administration might need to be adjusted, and alternative forms like an injectable route could be considered.
Correct Answer is ["8.8"]
Explanation
Step 1: The dose to be administered is175 mg of ziprasidone.
Step 2: The available ziprasidone injection has a concentration of20 mg/mL. This means that for every 1 mL of the solution, there are 20 mg of ziprasidone.
Step 3: To find out how many mL should be administered, we divide the dose by the concentration. So, 175 mg ÷ 20 mg/mL = 8.75 mL.
Step 4: Round the answer to the nearest tenth. So, 8.75 mL rounds to8.8 mL.
The nurse should administer 8.8 mL of ziprasidone injection
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