The nurse is to administer the patient's next dose of vancomycin at 9:30 a.m. What time will the nurse draw the patient's blood to check the trough vancomycin level?
8:30 a.m.
9:00 a.m.
10:00 a.m.
10:30 a.m.
The Correct Answer is B
Choice A reason: Drawing at 8:30 a.m., 60 minutes before, is too early; trough levels, taken just before the next dose, reflect minimum concentration, and this timing risks inaccurate results.
Choice B reason: At 9:00 a.m., 30 minutes before the 9:30 a.m. dose, the trough level accurately measures the lowest vancomycin concentration, ensuring therapeutic monitoring aligns with pharmacokinetics.
Choice C reason: Drawing at 10:00 a.m., after the dose, measures a post-infusion level, not the trough; this timing misses the minimum concentration critical for dosing adjustments.
Choice D reason: At 10:30 a.m., well after the dose, blood reflects peak or random levels, not the trough, skewing data needed to assess vancomycin’s therapeutic efficacy and safety.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
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.
Correct Answer is B
Explanation
Choice A reason: Crushing pills can alter drug efficacy and safety, especially for medications with controlled-release properties, making this inappropriate without specific provider instructions.
Choice B reason: Requesting a liquid form accommodates the patient’s physical limitations, maintaining therapeutic integrity and ensuring safe and effective medication administration.
Choice C reason: Introducing pills directly into the patient’s mouth risks aspiration and violates safe administration practices, emphasizing the need for alternative methods.
Choice D reason: If the patient struggles to hold the cup, self-administration becomes impractical. Assistance through appropriate alternative forms ensures compliance and safety.
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