A patient with schizophrenia has been prescribed haloperidol 10 mg IM. The vial available contains haloperidol 5 mg/mL. How many mL should the nurse administer?
3 mL
2 mL
1 mL
4 mL
The Correct Answer is B
Choice A reason: 3 mL contains 15 mg, which exceeds the prescribed dose by 5 mg. This would risk overdose and adverse effects such as extrapyramidal symptoms.
Choice B reason: 2 mL contains exactly 10 mg, matching the prescribed dose. This ensures accurate and safe administration.
Step 1: Ordered dose = 10 mg.
Step 2: Concentration = 5 mg per 1 mL.
Step 3: (10 mg ÷ 5 mg) = 2 mL.
Result = 2 mL.
Choice C reason: 1 mL contains only 5 mg, which is half the prescribed dose. Administering this amount would underdose the patient.
Choice D reason: 4 mL contains 20 mg, which is double the prescribed dose. This would cause toxicity and severe side effects.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D","F"]
Explanation
Choice A reason: Orientation and awareness are critical because a client who is disoriented or unaware of their surroundings may struggle to process and retain educational information. Assessing orientation ensures that teaching is appropriately timed and tailored to the client’s mental state.
Choice B reason: Willingness to engage in therapy directly impacts the effectiveness of education. A client who is resistant or unwilling may not absorb information, while a motivated client is more likely to participate actively and benefit from teaching.
Choice C reason: Memory and cognitive ability are essential for learning. Clients with impaired memory or cognition may require simplified instructions, repetition, or alternative teaching methods to ensure comprehension and retention.
Choice D reason: Environmental distractions interfere with concentration and learning. A noisy or chaotic environment reduces the client’s ability to focus, making it difficult to absorb information. Nurses must ensure a quiet, supportive setting for education.
Choice E reason: Past medical history irrelevant to mental health does not constitute a barrier to education. While medical history is important for overall care, it does not directly affect the client’s ability to engage in mental health education.
Choice F reason: Mood and affect influence receptiveness to education. A client who is anxious, depressed, or irritable may struggle to focus or engage. Addressing emotional state is necessary to optimize learning.
Choice G reason: Physical appearance is not a barrier to education. While appearance may provide clues about self-care or mental state, it does not directly impact the client’s ability to learn.
Correct Answer is A
Explanation
Choice A reason: Acknowledging concerns validates the client’s lived experience and demonstrates cultural humility. Exploring trust-building strategies fosters rapport and empowers the client to engage in care.
Choice B reason: Referral may be helpful but is not the immediate priority. It risks deflecting responsibility and may not be feasible. Building trust within the current therapeutic relationship is essential.
Choice C reason: Dismissing cultural concerns is harmful and perpetuates stigma. It invalidates the client’s perspective and undermines trust.
Choice D reason: Claiming all biases are eliminated is inaccurate and dismissive. Biases persist, and acknowledging them is critical to building credibility and trust.
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