Correct Answer: A

Rationale: The correct answer is A: Autonomy. Autonomy is the ethical principle that respects an individual's right to make their own decisions, including the right to refuse treatment. This principle acknowledges the patient's self-governance and independence in making choices about their own healthcare. Choice B, Nonmaleficence, refers to the ethical principle of doing no harm and ensuring patient safety. Choice C, Beneficence, involves promoting the patient's well-being and acting in their best interest. Choice D, Justice, pertains to fairness and equitable distribution of healthcare resources.

Correct Answer: C

Rationale: Monitoring blood glucose levels closely before surgery is the priority for a client with diabetes mellitus. This allows for early detection of any abnormalities and helps prevent hypo- or hyperglycemia complications that can arise during the perioperative period. Option A is incorrect because insulin dosing should be individualized based on the client's current blood glucose levels and the surgical plan. Option B is incorrect as abruptly holding oral hypoglycemic agents can lead to uncontrolled blood glucose levels. Option D is incorrect as adequate fluid intake is important for the client's hydration status and overall well-being before surgery.

Correct Answer: D

Rationale: Decreased central venous pressure (CVP) is the correct assessment finding in a client with deficient fluid volume. This is because a decrease in CVP indicates reduced blood volume returning to the heart, which is consistent with hypovolemia. Lung congestion (Choice A) would be more indicative of fluid volume excess, not deficiency. Decreased hematocrit (Choice B) may be seen in conditions such as anemia but is not specific to deficient fluid volume. Increased blood pressure (Choice C) is not typically associated with deficient fluid volume; in fact, hypovolemia often leads to decreased blood pressure.

Correct Answer: D

Rationale: Conveying empathy, trust, and respect can help reduce the client's anxiety and improve their overall experience during treatment. This approach creates a supportive environment and fosters a sense of safety and understanding for the client. Administering a sedative (Choice A) should not be the initial intervention for anxiety, as it does not address the underlying emotional needs of the client. Making sure the client knows all the correct medical terms (Choice B) may increase anxiety by overwhelming the client with technical information. Ignoring signs and symptoms of anxiety (Choice C) can lead to worsening distress and potential complications in the client's care.

Correct Answer: A

Rationale: The client with hyperthyroidism should avoid foods high in iodine, as it can exacerbate the condition by increasing thyroid hormone production. Seafood, particularly ocean fish, is rich in iodine, making it a food to avoid. Spinach, bananas, and oatmeal do not contain high levels of iodine and are generally safe for individuals with hyperthyroidism.