the nurse is teaching a client about sleep and gives background information on normal sleep patterns which of the following substances promotes sleep
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NCLEX-PN

Nclex Exam Cram Practice Questions

1. The nurse is teaching a client about sleep and gives background information on normal sleep patterns. Which of the following substances promotes sleep?

Correct answer: A

Rationale: Serotonin is a substance found in the body that promotes sleep. It plays a role in the synthesis of a hypnogenic factor that directly induces sleep. Cortisol is a stress hormone that can disrupt sleep patterns. Alcohol can disrupt REM sleep and negatively impact sleep quality. Narcotics, like alcohol, can interfere with sleep architecture and lead to poor quality sleep. Therefore, the correct answer is serotonin as it is associated with promoting sleep, while the other substances listed can have negative effects on sleep patterns.

2. The LPN is checking for residual before administering enteral feeding through a PEG tube. Which of these steps is incorrect?

Correct answer: C

Rationale: The incorrect step is choice C. The residual should be discarded before administering the tube feeding. Discarding the residual is essential to prevent contamination and ensure accurate measurement of the enteral feeding. Elevating the head of the bed by at least 30 degrees (choice A) is correct as it helps prevent aspiration during feeding. Testing the pH level of the residual (choice D) ensures proper placement of the tube. Withholding feeding if the residual is greater than 200mL (choice B) is crucial to prevent overfeeding, making this statement correct.

3. How should an infant be secured in a car?

Correct answer: D

Rationale: The recommended way to secure an infant in a car is to place them in the middle of the back seat in a rear-facing infant safety seat. Option A is incorrect because infants should never be held while in a moving vehicle due to safety concerns. Option B is incorrect because placing an infant in the front seat with a rear-facing safety seat can be risky if the car has passenger-side airbags. Option C is incorrect as booster seats are not suitable for infants. Therefore, the correct choice is to secure the infant in the middle of the back seat in a rear-facing infant safety seat.

4. A client with which of the following conditions is at risk for developing a high ammonia level?

Correct answer: D

Rationale: A client with cirrhosis is at risk for developing a high ammonia level due to impaired liver function. The liver normally converts ammonia into urea for excretion. In cirrhosis, this process is compromised, leading to elevated ammonia levels in the blood. Renal failure, psoriasis, and lupus do not typically cause high ammonia levels. Renal failure affects kidney function, while psoriasis and lupus are autoimmune conditions that do not directly impact ammonia metabolism.

5. Which of these would be the most appropriate way to document a client's refusal of medication?

Correct answer: C

Rationale: The most appropriate way to document a client's refusal of medication should include details such as the medication, the client's statement of refusal, and the review of potential risks. Choice C accurately captures all these essential elements, making it the correct answer. Choice A lacks details about the client's refusal and the review of risks. Choice B includes unnecessary emotional descriptions and a plan of action that might not be appropriate. Choice D uses abbreviations that may not be universally understood, lacks proper punctuation, and also does not provide a detailed account of the refusal and the review of risks.

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