NCLEX-PN
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1. What is the therapeutic range for carbamazepine (Tegretol)?
- A. 7-12 mcg/mL
- B. 4-10 mcg/mL
- C. 10-14 mcg/mL
- D. 1-5 mcg/mL
Correct answer: 4-10 mcg/mL
Rationale: The therapeutic range for carbamazepine (Tegretol) is 4-10 mcg/mL. This range is established based on the optimal balance between effectiveness and safety. Choices A, C, and D are outside the therapeutic range for carbamazepine, which could lead to suboptimal treatment outcomes or increased risk of toxicity. Choice B (4-10 mcg/mL) is the correct range recommended for therapeutic efficacy while minimizing adverse effects.
2. The client has an order for a 1,000 mL bag of fluids to be infused over 8 hours. What is the correct rate?
- A. 100 mL/hr
- B. 125 mL/min
- C. 125 mL/hr
- D. 80 mL/min
Correct answer: 125 mL/hr
Rationale: To determine the correct infusion rate, divide the total volume of fluids (1,000 mL) by the total infusion time (8 hours), resulting in a rate of 125 mL/hr. This calculation ensures the appropriate administration of fluids over the specified time period. Choice A (100 mL/hr) is incorrect as it does not match the calculated rate based on the given information. Choice B (125 mL/min) is inaccurate because the question specifies the rate in hours, not minutes. Choice D (80 mL/min) is incorrect as it provides the rate in minutes rather than hours, which is the required unit for this scenario.
3. A nurse is preparing to test cranial nerve I. Which item does the nurse obtain to test this nerve?
- A. Coffee
- B. A tuning fork
- C. A wisp of cotton
- D. An ophthalmoscope
Correct answer: A wisp of cotton
Rationale: To assess the function of cranial nerve I (olfactory nerve), the nurse uses a wisp of cotton to test the sense of smell in a client who reports loss of smell. The nurse assesses the patency of the client's nostrils by occluding one nostril at a time and asking the client to sniff. Next, with the client's eyes closed, the nurse occludes one nostril and presents a non-noxious aromatic substance such as coffee, toothpaste, orange, vanilla, soap, or peppermint. Choice A, 'Coffee,' is incorrect because it is used to present non-noxious aromatic substances to assess cranial nerve I. Choice B, 'A tuning fork,' is used to assess the function of cranial nerve VIII (acoustic nerve). Choice D, 'An ophthalmoscope,' is used to assess the internal structures of the eye, not cranial nerve I.
4. A nurse assisting with data collection of the peripheral vascular system performs the Allen test. The nurse understands that this test is used to determine the patency of which blood vessel(s)?
- A. Capillaries
- B. Pedal pulses
- C. Femoral arteries
- D. Radial and ulnar arteries
Correct answer: Radial and ulnar arteries
Rationale: The nurse performs the Allen test to determine the patency of the radial and ulnar arteries. During the test, the nurse applies pressure over the client’s ulnar and radial arteries simultaneously. The client is then asked to open and close the hand repeatedly, causing the hand to blanch. Subsequently, the nurse releases pressure from the ulnar artery while compressing the radial artery and checks the color of the extremity distal to the pressure point. If pinkness fails to return within 6 seconds, it indicates that the ulnar artery is insufficient, suggesting that the radial artery should not be used for obtaining a blood specimen. Choice A (Capillaries) is incorrect as the Allen test assesses the patency of larger arteries, not capillaries. Choice B (Pedal pulses) is incorrect as the Allen test specifically evaluates the radial and ulnar arteries, not the pedal pulses in the foot. Choice C (Femoral arteries) is incorrect as the Allen test focuses on the radial and ulnar arteries in the hand, not the femoral arteries in the leg.
5. Why is Kleinman’s Explanatory Model of Health and Illness significant?
- A. it focuses on the health beliefs of a particular family.
- B. it highlights the impact of culture on health explanations.
- C. it discusses the significant role of popular and folk domains of influence.
- D. it is based on an educational approach.
Correct answer: it discusses the significant role of popular and folk domains of influence.
Rationale: Kleinman's Explanatory Model of Health and Illness is significant because it emphasizes the influence of popular and folk domains on health perceptions. Kleinman distinguishes between disease, representing the biomedical view, and illness, reflecting individual understanding. The model underscores that cultural factors shape the significance of popular and folk influences on health beliefs. Choice A is incorrect as the model focuses on broader cultural influences, not individual family beliefs. Choice B is incorrect as it oversimplifies the model's emphasis on various cultural aspects. Choice D is incorrect as the model's significance lies in its cultural framework rather than an educational base.
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