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 A
Explanation
Choice A reason: Monitoring lithium levels is essential because of its narrow therapeutic index; toxicity can occur if levels rise slightly above the therapeutic range.
Choice B reason: Weight gain is not an indication of lithium toxicity; instead, toxicity signs include tremors, nausea, diarrhea, and confusion.
Choice C reason: Lithium is not addictive, and therapy is often long-term to prevent relapse of mood episodes.
Choice D reason: Diuretics are contraindicated with lithium because they increase the risk of toxicity by altering sodium and fluid balance.
Correct Answer is A
Explanation
Choice A reason: This response uses therapeutic communication by reflecting the client’s feelings, which encourages further expression and demonstrates empathy without judgment. It acknowledges the client’s concern while maintaining professional boundaries.
Choice B reason: This response, although supportive, does not focus on the client’s expressed feelings. It dismisses the concern by shifting to the nurse’s perspective rather than validating the client’s emotions.
Choice C reason: This is a dismissive and minimizing response. Suggesting deep breathing without addressing the underlying delusion fails to use therapeutic communication techniques in mental health care.
Choice D reason: This response is confrontational and places the client in a defensive position. It may escalate agitation and is not consistent with therapeutic communication principles.
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