The physician orders Salagen 10 mg po twice a day for dry eyes. 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 B
Choice A reason: One 5-mg tablet delivers 5 mg; this underdoses the 10 mg ordered, reducing salivation stimulation needed for dry eye relief.
Choice B reason: Two 5-mg tablets equal 10 mg; this matches the order, ensuring therapeutic cholinergic effect to increase tear production effectively.
Choice C reason: Three tablets (15 mg) overdose; excess pilocarpine risks side effects (e.g., sweating, bradycardia) without added benefit for dry eyes.
Choice D reason: Four tablets (20 mg) far exceed the dose; this could cause severe cholinergic toxicity, including respiratory distress, outweighing therapeutic intent.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: An applicator ensures precise vaginal delivery; it maintains sterility, controls depth, and optimizes medication contact with mucosa for effective absorption.
Choice B reason: Irrigation kits are for flushing; they’re inappropriate for solid or cream medications, risking uneven distribution or mucosal irritation in the canal.
Choice C reason: A finger risks contamination; without sterile technique, it introduces bacteria, and depth control is poor compared to a designed applicator.
Choice D reason: Gauze pads can’t deliver deeply; medication may stick or distribute poorly, reducing efficacy and comfort in vaginal administration settings.
Correct Answer is A
Explanation
Choice A reason: Tolerance reflects receptor desensitization or enzyme induction; higher doses compensate for reduced drug efficacy, a common pharmacological adaptation.
Choice B reason: Organ failure affects metabolism, not tolerance; tolerance is a cellular response, not solely a failure of liver or kidney drug clearance mechanisms.
Choice C reason: Stable dosing contradicts tolerance; if tolerance develops, efficacy drops, necessitating dose increases, not maintenance, to achieve therapeutic levels.
Choice D reason: Non-adherence may alter response, but tolerance occurs with consistent use; it’s a physiological adaptation, not a result of misuse or skipping doses.
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