Correct Answer: C

Rationale: The correct answer is C: Bananas. Bananas are high in potassium and should be avoided in clients who are on a low-potassium diet due to chronic kidney disease. Foods like apples and white bread are low in potassium and are safer choices. Carrots are also low in potassium and do not need to be avoided in this case.

Correct Answer: B

Rationale: The immediate priority for a client with a suspected infection and fever is to take a blood culture before administering antibiotics. This step is crucial to identify the causative organism and ensure appropriate treatment. Administering antipyretics or encouraging fluid intake are important but should come after obtaining the blood culture to avoid interfering with test results. Monitoring vital signs, although essential, is not the immediate priority compared to identifying the infectious agent.

Correct Answer: B

Rationale: The combination of nausea, vomiting, yellow vision, and palpitations in a heart failure patient is indicative of digoxin toxicity. The nurse should first obtain a list of the client's medications to verify if they are taking digoxin.

Correct Answer: B

Rationale: The correct answer is B: 'Foods sweetened with aspartame.' Children with PKU must avoid foods containing aspartame because it breaks down into phenylalanine, which can worsen their condition. Choice A, fresh fruit and vegetables, are generally healthy and safe for individuals with PKU. Choice C, bread with honey, is also safe unless the bread contains artificial sweeteners like aspartame. Choice D, gluten-rich bread, is not specifically problematic for individuals with PKU unless it contains aspartame or other substances high in phenylalanine.

Correct Answer: B

Rationale: The correct answer is B. Levothyroxine should be taken at the same time every day to maintain stable thyroid hormone levels and ensure effective management of hypothyroidism. Consistent dosing is critical for preventing fluctuations in hormone levels. Choice A is incorrect because levothyroxine is usually recommended to be taken on an empty stomach for optimal absorption. Choice C is incorrect because increased sensitivity to cold is not a common side effect of levothyroxine. Choice D is incorrect because adjusting the dosage without healthcare provider guidance can be dangerous and should not be done independently.