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 C
Explanation
Choice A reason: Understanding jokes assumes comprehension but ignores cultural comfort; humor’s acceptability varies, and this misses emotional readiness assessment.
Choice B reason: Jokes about staff may offend or confuse; without patient input, this risks cultural insensitivity, especially in Asian contexts valuing respect for authority.
Choice C reason: Asking feelings respects cultural norms; humor’s therapeutic effect depends on patient receptivity, ensuring it aligns with individual and cultural preferences.
Choice D reason: Joking about conditions can distress; it’s culturally inappropriate in many Asian settings, potentially worsening trust or emotional state without consent.
Correct Answer is C
Explanation
Choice A reason: Convenience doesn’t ensure efficacy; supplements lack rigorous testing, potentially delivering inconsistent doses or contaminants, unlike prescription drugs’ controlled standards.
Choice B reason: Cost isn’t a clinical justification; lower price may reflect unregulated production, risking potency or safety compared to prescriptions validated by scientific trials.
Choice C reason: Supplements aren’t FDA-regulated like prescriptions; lacking standardized purity and efficacy tests, they may contain variable active ingredients, posing therapeutic risks.
Choice D reason: Plant-based doesn’t guarantee safety; many herbs are toxic or interact harmfully with drugs, unlike prescriptions with established pharmacokinetics and safety profiles.
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