Correct Answer: D

Rationale: Sweating is a common sign of hypoglycemia in patients with diabetes. When blood sugar levels drop too low, the body releases stress hormones like adrenaline, leading to symptoms such as sweating, shakiness, and palpitations. Polydipsia (excessive thirst) and polyuria (excessive urination) are more commonly associated with hyperglycemia (high blood sugar levels) in diabetes. Dry skin is not a typical symptom of hypoglycemia.

Correct Answer: A

Rationale: The best indicator of learning is the ability to perform the procedure safely and correctly, demonstrating skill acquisition. Choice A is correct because the client's ability to perform the insulin self-injection safely and correctly shows practical understanding and application of the skill. Choice B is incorrect because critiquing the nurse's performance does not necessarily demonstrate the client's ability to carry out the procedure themselves. Choice C is incorrect as merely explaining the steps verbally does not confirm the client's practical execution of the task. Choice D is also incorrect as answering a post-test does not directly assess the client's ability to physically perform the insulin self-injection.

Correct Answer: B

Rationale: A low-protein diet is necessary for clients with chronic renal failure because it helps prevent the buildup of waste products, such as urea, in the body. Excess protein can lead to the accumulation of waste products that the compromised kidneys may not effectively filter out, further burdening the already impaired renal function. Choices A, C, and D are incorrect because the primary reason for a low-protein diet in chronic renal failure is to reduce the workload on the kidneys by minimizing the production of waste products that can exacerbate the condition, not specifically to reduce kidney workload, maintain electrolyte balance, or prevent dehydration.

Correct Answer: B

Rationale: The correct answer is B. Crackles in the bases of the lungs are indicative of fluid accumulation, which is common in left-sided heart failure. In left-sided heart failure, the heart is unable to effectively pump blood from the lungs to the rest of the body, leading to a backup of fluid in the lungs. This results in crackles heard on auscultation. Choices A, C, and D are not specific to left-sided heart failure. An enlarged, distended abdomen may indicate ascites or liver congestion. Jugular vein distension is more commonly associated with right-sided heart failure, and peripheral edema is a sign of fluid accumulation in the tissues, which can occur in both types of heart failure but is not as specific to left-sided heart failure as crackles in the lungs.

Correct Answer: A

Rationale: Daily weight measurements are the best indicator of fluid balance in a patient with heart failure. Changes in weight reflect fluid retention or loss more accurately than other methods. Monitoring intake and output (choice B) is essential but may not provide a comprehensive picture of fluid status. Skin turgor (choice C) and checking for peripheral edema (choice D) are more indicative of dehydration and fluid overload, respectively, rather than overall fluid balance.