The physician orders Zestril 15 mg po daily for hypertension. The medication is supplied in 5-mg tablets. How many tablets will the nurse administer?
1 tablet
2 tablets
3 tablets
4 tablets
The Correct Answer is C
Choice A reason: One 5-mg tablet provides only 5 mg, far below the 15 mg ordered; this underdose fails to control hypertension effectively, risking cardiovascular complications like stroke or heart failure.
Choice B reason: Two tablets yield 10 mg, still short of 15 mg; this insufficient dose wouldn’t achieve therapeutic blood pressure reduction, leaving the patient at risk for hypertensive damage.
Choice C reason: Three 5-mg tablets equal 15 mg, matching the order precisely; this dose effectively inhibits angiotensin-converting enzyme, lowering blood pressure to a therapeutic range safely.
Choice D reason: Four tablets deliver 20 mg, exceeding the order; this overdose could cause hypotension, dizziness, or renal impairment due to excessive ACE inhibition beyond therapeutic needs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Administering insulin at proper timing correlates with mealtimes. However, this alone doesn't ensure safe practice.
Choice B reason: Confirming the injection site prevents lipodystrophy but does not address dose accuracy, which is vital for safety.
Choice C reason: Insulin is injected subcutaneously, not in the deltoid muscle. Using incorrect sites disrupts absorption.
Choice D reason: Double-checking insulin dose prevents administration errors, ensuring compliance with medication safety protocols.
Correct Answer is B
Explanation
Choice A reason: 610 mL omits ice cream (120 mL); total is 120 + 120 + 260 + 90 + 120 = 710 mL; this undercalculation misses a key liquid intake component.
Choice B reason: 710 mL sums all: 120 (juice) + 120 (milk) + 260 (coffee) + 90 (ice pop) + 120 (ice cream); melted solids count as fluid, matching clinical standards.
Choice C reason: 810 mL overestimates; no additional fluids are listed beyond 710 mL; this error likely adds non-existent intake, skewing the total inaccurately.
Choice D reason: 910 mL vastly exceeds reality; it may double-count or invent fluids; only 710 mL is supported by the listed consumption data provided.
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