Correct Answer: C

Rationale: The correct answer is C (50% to 55% carbohydrate, 35% fat, and 10% to 15% protein) for managing diabetes. Carbohydrates impact blood sugar levels the most, so a moderate intake is crucial. The fat percentage is lower to reduce the risk of cardiovascular issues, common in diabetics. Protein intake is moderate for muscle maintenance. Choice A has higher fat and lower carbohydrate, not ideal for diabetes. Choice B has too high carbohydrate, which can spike blood sugar. Choice D has the highest carbohydrate percentage, which is not recommended for diabetes management.

Correct Answer: D

Rationale: The correct answer is D: Heart. A potassium level of 6.3 mEq/L indicates hyperkalemia, which can lead to cardiac arrhythmias and even cardiac arrest. The heart is highly sensitive to potassium levels, as it plays a crucial role in regulating the heart's electrical activity. Elevated potassium levels can disrupt this balance, leading to serious cardiac complications. Summary: A: Lungs - Not directly affected by potassium levels. B: Liver - Not directly affected by potassium levels. C: Kidneys - Kidneys regulate potassium levels but are not the most at risk for dysfunction in this scenario.

Correct Answer: A

Rationale: The correct answer is A because hyperparathyroidism is not caused by increased levels of thyroxine but by overactivity of the parathyroid glands. This would lead to symptoms of heat intolerance due to increased metabolism and systolic hypertension due to the effects of excess parathyroid hormone on calcium levels. Choice B is incorrect because diastolic hypertension and widened pulse pressure are not typical symptoms of hyperparathyroidism. Choice C is incorrect because weight gain is not a common symptom of hyperparathyroidism. Choice D is incorrect because anorexia and hyper-excitability are not typical symptoms of hyperparathyroidism.

Correct Answer: C

Rationale: Rationale for Choice C (Correct Answer): 1. Multiple sclerosis (MS) commonly affects the optic nerve and chiasm. 2. MS is characterized by demyelination of nerves, leading to visual disturbances. 3. Optic nerve involvement results in vision problems, such as blurred vision. 4. Chiasm involvement can cause visual field deficits and color perception changes. Summary of Other Choices: A: Lateral, 3rd, and 4th ventricles - Incorrect. MS primarily affects the central nervous system, not ventricles. B: Pons, medulla, and cerebral peduncles - Incorrect. While these areas are part of the brainstem, they are not commonly affected in MS. D: Above areas - Incorrect. This choice is vague and does not specify any specific areas affected by MS.

Correct Answer: B

Rationale: The correct answer is B. Mr. Sy's statement indicates he understands the pre-operative fasting instructions, which is crucial to prevent aspiration during surgery. Not eating after midnight reduces the risk of complications. A: Incorrect. Wearing a pneumatic compression device post-surgery is important, but this statement does not demonstrate understanding of pre-surgery preparations. C: Incorrect. Knowing the skin preparation site size does not indicate understanding of the surgery process. D: Incorrect. Signing the consent form at the operating table may indicate lack of understanding of the consent process and timing. In summary, choice B is correct as it shows Mr. Sy's awareness of the fasting requirement before surgery, which is crucial for a safe operation.