The physician orders vancomycin 500 mg in 250 mL of D5W IVPB daily to infuse over 2 hours. Tubing drop factor is 15 gtts/mL. Calculate the flow rate in drops per minute.
31 gtts/min
62 gtts/min
125 gtts/min
250 gtts/min
The Correct Answer is B
Choice A reason: 31 gtts/min assumes 250 mL over 4 hours with 15 gtts/mL; this halves the rate, underdelivering vancomycin, risking subtherapeutic levels and ineffective bacterial killing over the prescribed 2-hour infusion time.
Choice B reason: 62 gtts/min is correct; 250 mL over 2 hours is 125 mL/hr, times 15 gtts/mL equals 1875 gtts total, divided by 120 minutes yields 62 gtts/min, ensuring proper antibiotic delivery.
Choice C reason: 125 gtts/min doubles the rate; 250 mL in 1 hour with 15 gtts/mL is too fast, risking vancomycin toxicity, including renal damage, and exceeding safe infusion guidelines for IVPB.
Choice D reason: 250 gtts/min assumes 250 mL in 30 minutes; this dangerously rapid rate could cause vancomycin-induced red man syndrome or cardiovascular overload, far beyond the ordered 2-hour infusion duration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Lisinopril is the generic name; trade names are branded, and this doesn’t fit the question’s focus on the manufacturer’s marketed title.
Choice B reason: Zestril is the trade name for lisinopril; it’s trademarked by the manufacturer, aligning with the question’s request for the branded medication name.
Choice C reason: Acetaminophen is a generic, not a trade name here; it’s unrelated to Zestril’s class (ACE inhibitor), making it an incorrect option.
Choice D reason: Morphine is a generic opioid; it doesn’t match Zestril’s antihypertensive role or trade name status, ruling it out entirely.
Correct Answer is C
Explanation
Choice A reason: Rescheduling dismisses the patient’s fear; it delays therapy without addressing misconceptions, missing a chance to educate and proceed with migraine relief.
Choice B reason: Questioning prior explanation may shame the patient; it doesn’t clarify biofeedback’s non-invasive nature, failing to reduce anxiety about shocks.
Choice C reason: Explaining no shocks and describing biofeedback as monitoring reassures scientifically; it corrects fears, aligning with its role in stress-related migraine management.
Choice D reason: Vague reassurance lacks specificity; without addressing shocks, it’s less effective, as patients need clear, factual dispelling of their expressed concern.
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