A nurse is preparing to administer chlorpromazine 50 mg IM to a client. Available is chlorpromazine 25 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 is50 mg of chlorpromazine.
Step 2: The available chlorpromazine injection has a concentration of25 mg/mL. This means that for every 1 mL of the solution, there are 25 mg of chlorpromazine.
Step 3: To find out how many mL should be administered, we divide the dose by the concentration. So, 50 mg ÷ 25 mg/mL = 2 mL.
The nurse should administer 2 mL of chlorpromazine injection.
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 ["2.3"]
Explanation
Step 1: The dose to be administered is300 mg of phenobarbital sodium.
Step 2: The available phenobarbital sodium injection has a concentration of130 mg/mL. This means that for every 1 mL of the solution, there are 130 mg of phenobarbital sodium.
Step 3: To find out how many mL should be administered, we divide the dose by the concentration. So, 300 mg ÷ 130 mg/mL = 2.307692307692308 mL.
Step 4: Round the answer to the nearest tenth. So, 2.307692307692308 mL rounds to2.3 mL.
The nurse should administer 2.3 mL of phenobarbital sodium injection.
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