Vistaril 75 mg IM is ordered for anxiety. Available: 50 mg/mL. How many milliliters will the nurse administer?

1 mL

1.5 mL

2 mL

2.5 mL

Answer and Explanation

The Correct Answer is B

Choice A reason: 1 mL gives 50 mg; this underdoses the 75 mg order, reducing Vistaril’s sedative effect, risking inadequate anxiety relief for the patient.

Choice B reason: 1.5 mL is correct; 75 mg divided by 50 mg/mL equals 1.5 mL, delivering the precise IM dose for effective anxiolytic action safely.

Choice C reason: 2 mL provides 100 mg; this overdoses Vistaril, risking excessive sedation or hypotension, exceeding the ordered therapeutic amount unnecessarily.

Choice D reason: 2.5 mL yields 125 mg; this far exceeds 75 mg, amplifying side effects like drowsiness or respiratory depression, unsafe for anxiety management.

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Correct Answer is C

Explanation

Choice A reason: Toxic effects involve overdose symptoms like coma; staying awake isn’t toxicity, as Nembutal’s sedative intent is reversed, not exaggerated, in this reaction.

Choice B reason: Drug allergy causes immune responses (e.g., rash); insomnia isn’t allergic, but a paradoxical effect, differing from hypersensitivity reactions entirely.

Choice C reason: Idiosyncrasy is an unexpected reaction; Nembutal, a barbiturate, should sedate, but wakefulness is an abnormal, individual response, fitting this category precisely.

Choice D reason: Tolerance reduces efficacy over time; this acute, opposite reaction to a sedative isn’t tolerance, but an immediate, unpredictable drug response.

A. Is most reliable in terms of onset. B. Is most convenient. C. Is best tolerated by clients. D. Ensures fast drug action.

Correct Answer is B

Explanation

Choice A reason: While reliability exists, the oral route is less predictable than IV administration due to variability in absorption caused by digestive factors, making it less reliable for rapid or consistent onset.

Choice B reason: Convenience is the primary advantage of oral administration. It allows ease of self-administration, enabling clients to manage their medications without healthcare provider intervention, making it the most frequently used route.

Choice C reason: While many clients tolerate oral medications well, others may face challenges, such as difficulty swallowing or gastric irritation, meaning tolerability varies and is not a universal advantage of this route.

Choice D reason: The oral route does not ensure fast action due to time required for digestion, absorption, and metabolism, making it slower compared to routes like IV or sublingual administration.

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Vistaril 75 mg IM is ordered for anxiety. Available: 50 mg/mL. How many milliliters will the nurse administer?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

After receiving Nembutal PO at bedtime, a client is wide awake all night instead of going to sleep. What kind of adverse reaction to a drug does this situation represent?

Correct Answer is C

Explanation

The nurse administering medications to a client is aware that the primary reason that most drugs are administered orally is because the oral route:

Correct Answer is B

Explanation

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