A patient with a history of anxiety disorder is prescribed lorazepam at a dosage of 1 mg to be administered every 8 hours as needed. If the patient has already received 2 doses today, what is the maximum additional dosage they can safely receive within the same day?
3 mg.
2 mg.
0 mg.
The Correct Answer is C
Choice A reason: A 3 mg additional dose would exceed the prescribed limit. The prescription allows for 1 mg every 8 hours as needed, up to a maximum of 3 mg in a 24-hour period (one dose every 8 hours). Since the patient has already received 2 mg (two 1 mg doses), an additional 3 mg would result in a total of 5 mg, which is unsafe and exceeds the prescribed daily limit.
Choice B reason: A 2 mg additional dose would also exceed the prescribed limit. With 2 mg already taken, an additional 2 mg would total 4 mg in a day, surpassing the maximum of 3 mg allowed by the prescription (1 mg every 8 hours, up to three doses).
Choice C reason: The patient has already received 2 mg (two 1 mg doses) today. The prescription allows for 1 mg every 8 hours as needed, which permits a maximum of 3 mg in 24 hours. With two doses already administered, only one additional 1 mg dose is safe, but none of the options list 1 mg. Therefore, 0 mg is the correct answer, as no additional dose beyond the remaining 1 mg is permissible among the given choices.
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: Allowing the client to describe the event in their own words is essential for initial assessment, evidence collection, and emotional support.
Choice B reason: A bed bath would destroy physical evidence needed for forensic examination.
Choice C reason: Discussing self-defense techniques at this time is inappropriate, as the focus should be on immediate safety, support, and care.
Choice D reason: Photographs may be taken, but the nurse should not present them as required for police reporting, as this can increase trauma and coercion.
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