Correct Answer: D

Rationale: Polyuria, polydipsia, and polyphagia are classic signs of hyperglycemia, indicating high blood glucose levels. The priority action for the nurse is to check the client's blood glucose levels to assess the severity of hyperglycemia and determine the need for appropriate interventions. Administering insulin (Choice A) may be necessary based on the blood glucose levels but should only be done after confirming the current status. Encouraging increased fluid intake (Choice B) may exacerbate the symptoms by further diluting the blood glucose concentration. While monitoring for signs of dehydration (Choice C) is important in the long term, the immediate action should focus on determining the blood glucose levels first.

Correct Answer: C

Rationale: Cold intolerance is a classic symptom of hypothyroidism. In hypothyroidism, the body's metabolic rate is decreased, leading to a reduced ability to regulate body temperature. As a result, individuals with hypothyroidism often feel cold, especially in their extremities. Tachycardia (A) is more commonly associated with hyperthyroidism due to the increased metabolic rate. Weight loss (B) is also a typical finding in hyperthyroidism, as the body burns calories at a faster rate. Diaphoresis (D), excessive sweating, is not a typical symptom of hypothyroidism.

Correct Answer: C

Rationale: The correct answer is C: Low-grade fever. A low-grade fever may indicate an infection, which is a serious concern in clients with Cushing's syndrome due to their immunosuppressed state. Hypertension and hyperglycemia are common manifestations of Cushing's syndrome and may not require immediate reporting unless severe or uncontrolled. Weight gain is also a common symptom in clients with Cushing's syndrome and may not warrant immediate reporting unless it is sudden and significant.

Correct Answer: B

Rationale: Hyperparathyroidism leads to increased secretion of parathyroid hormone, which results in elevated calcium levels in the blood (hypercalcemia). Therefore, the correct lab finding consistent with hyperparathyroidism is hypercalcemia (Choice B). Hypocalcemia (Choice A) is not indicative of hyperparathyroidism as the condition is associated with high calcium levels. Hypokalemia (Choice C) is a low potassium level, which is not typically associated with hyperparathyroidism. Hyperphosphatemia (Choice D) refers to high phosphate levels and is not a characteristic finding in hyperparathyroidism.

Correct Answer: A

Rationale: The correct answer is to monitor blood glucose levels before meals and at bedtime. This timing allows for a comprehensive understanding of how the body responds to food intake and to assess fasting glucose levels. Monitoring blood glucose only after meals (Choice B) may miss important pre-meal fluctuations. Checking glucose levels only in the morning (Choice C) overlooks the impact of meals throughout the day. Monitoring blood glucose only when feeling unwell (Choice D) is reactive and does not provide consistent data for managing diabetes effectively. Therefore, monitoring blood glucose before meals and at bedtime helps in maintaining good glucose control and preventing complications.