A patient is prescribed 150 mg/day of Lithium, divided into two equal doses. How much Lithium should be given per dose?
150 mg.
75 mg.
50 mg.
100 mg.
The Correct Answer is B
Choice A reason: Giving 150 mg in one dose would mean the full daily dose is administered at once, not divided as ordered.
Choice B reason: The total daily dose is 150 mg. Dividing this into two equal doses means 150 ÷ 2 = 75 mg per dose.
Choice C reason: Fifty mg per dose would only total 100 mg per day, which is below the prescribed dose.
Choice D reason: One hundred mg per dose would total 200 mg daily, which exceeds the prescribed 150 mg/day.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Reflecting the patient’s feelings can be therapeutic in some cases, but here it could reinforce the delusion of being imprisoned rather than provide reassurance and grounding.
Choice B reason: This response provides reality orientation, reassurance, and therapeutic communication. It acknowledges the client’s concern while reinforcing the purpose of hospitalization, which is treatment and safety.
Choice C reason: Encouraging deep breathing addresses anxiety but does not respond to the client’s delusional thought. It avoids the core issue and may make the client feel dismissed.
Choice D reason: Asking “why” questions can feel confrontational and may heighten paranoia or mistrust. It does not provide therapeutic reassurance.
Correct Answer is B
Explanation
Choice A reason: Three tablets would equal 750 mg, which exceeds the prescribed 500 mg dose and could lead to overdose.
Choice B reason: Two tablets of 250 mg each equal the prescribed 500 mg dose, making this the correct answer.
Choice C reason: One tablet would equal 250 mg, which is only half the prescribed daily dose and would be ineffective.
Choice D reason: Four tablets would equal 1,000 mg, which is double the prescribed dose and could be toxic.
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