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
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Related Questions
Correct Answer is D
Explanation
Choice A reason: Positioning the tablet next to the cheek alters absorption and delays onset. Sublingual placement ensures rapid effect.
Choice B reason: Swallowing bypasses sublingual absorption, reducing efficacy. The route is critical for desired therapeutic outcomes.
Choice C reason: Crushing and dissolving disrupts integrity, compromising rapid sublingual absorption. Proper administration maintains efficacy.
Choice D reason: Sublingual placement allows rapid dissolution and absorption via mucous membranes, ensuring swift therapeutic action.
Correct Answer is A
Explanation
Choice A reason: Deltoid and vastus lateralis are large muscles with good vascularity; they safely absorb IM injections, minimizing nerve damage or tissue irritation risks.
Choice B reason: Chest and abdomen lack sufficient muscle mass for IM; these are subcutaneous or IV sites, risking poor absorption or injury if used intramuscularly.
Choice C reason: Forearm and scapula are too thin or bony; IM injections here risk nerve or bone damage, lacking the muscle bulk needed for safe drug delivery.
Choice D reason: Lower leg (e.g., calf) has small muscles and major vessels; IM use risks vascular injury or slow absorption, making it an unsafe injection site.
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