A nurse is preparing to administer diphenhydramine 30 mg IM to a client. Available isdiphenhydramine injection 50 mg/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.)
The Correct Answer is ["0.6"]
Step 1: Define the total amount of diphenhydramine needed Total dose = 30 mg
Step 2: Define the concentration of the available diphenhydramine injection Concentration = 50 mg/mL
Step 3: Calculate the volume of diphenhydramine injection needed Volume = Total dose ÷ Concentration Volume = 30 mg ÷ 50 mg/mL Volume = 0.6 mL
The nurse should administer 0.6 mL of diphenhydramine injection per dose
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"]
Explanation
Step 1: We know that 1 mg of benztropine mesylate is equivalent to 1 mL. So, 2 mg will be equivalent to 2 mL.
Therefore, the nurse should administer 2 mL of benztropine mesylate.
Since 2 is a whole number, there is no need for rounding.
The leading zero does not apply in this case as the number is not less than 1.
There is also no trailing zero after the decimal point. So, the final answer is 2 mL.
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