Correct Answer: B

Rationale: Choice B, 'I might have trouble sleeping when I start this medication,' indicates understanding because insomnia is a common side effect of sertraline, especially when initiating the medication. This statement shows the client comprehends a potential adverse effect and is prepared for it. Choices A, C, and D are incorrect. Taking sertraline with or without meals does not significantly affect its efficacy. There is no specific contraindication about drinking orange juice while on sertraline. Feeling better immediately after starting the medication is unlikely as sertraline usually takes some time to exert its therapeutic effects.

Correct Answer: B

Rationale: Oatmeal is high in fiber, which helps lower cholesterol levels, making it a heart-healthy food option for clients at risk for cardiovascular disease. Fried chicken, bacon, and whole milk are high in saturated fats and cholesterol, which can increase the risk of heart disease and should be limited in the diet of individuals at risk for cardiovascular issues.

Correct Answer: B

Rationale: Lethargy and confusion in a client with gastroenteritis are concerning findings that may indicate severe dehydration or electrolyte imbalance, requiring immediate intervention. While the other options are important, they do not pose an immediate life-threatening risk compared to the altered mental status in a client with gastroenteritis.

Correct Answer: C

Rationale: Patients with chronic kidney disease are prone to orthostatic hypotension, which can cause dizziness. To prevent this, the nurse should instruct the patient to stand up slowly. Options A, B, and D do not directly address the issue of orthostatic hypotension and dizziness in this scenario.

Correct Answer: C

Rationale: The correct answer is C, 'Lack of health literacy.' The nurse's inability to follow the medication regimen suggests she may lack health literacy, meaning she may not fully understand how to manage her own health care. Choice A, 'Early cognitive impairment,' is not supported by the information provided in the question as there is no mention of cognitive decline. Choice B, 'Lack of motivation,' is less likely as the behavior is more indicative of a knowledge deficit rather than a lack of drive. Choice D, 'Worsening health state,' is also less likely as the behavior described does not directly imply a worsening health condition but rather a misunderstanding or lack of knowledge on managing health.