Correct Answer: A

Rationale: The most appropriate nursing diagnosis for a client with Addison's disease is 'Risk for infection.' Addison's disease is characterized by corticosteroid deficiency, which leads to immune suppression, making these clients more susceptible to infections. This diagnosis reflects the increased vulnerability of clients with Addison's disease to infections. Choices B, C, and D are incorrect because Addison's disease does not typically present with excessive fluid volume, urinary retention, or hypothermia as primary concerns.

Correct Answer: B

Rationale: When a client with hyperthyroidism undergoes radioactive iodine treatment, it often leads to hypothyroidism due to the destruction of thyroid tissue. This occurs as a desired outcome of the treatment to reduce the overactive thyroid function. Choices A, C, and D are incorrect. Increased heart rate, hypercalcemia, and weight loss are not expected side effects of radioactive iodine treatment for hyperthyroidism. Instead, the goal is to suppress the overactive thyroid, leading to a hypothyroid state.

Correct Answer: C

Rationale: The correct instruction for a client with type 2 diabetes mellitus regarding foot care is to inspect their feet daily for any cuts or sores. This practice helps in early detection of potential issues like cuts, sores, or infections, which can be challenging to heal due to poor circulation in diabetes. Choice A is incorrect because soaking feet in hot water can lead to burns or skin damage, especially for individuals with diabetes who may have reduced sensation. Choice B is incorrect because going barefoot increases the risk of injuries and infections for individuals with diabetes. Choice D is incorrect because using a heating pad can also impair sensation, increasing the risk of burns or injuries for diabetic individuals.

Correct Answer: A

Rationale: Exercising in the afternoon may coincide with the peak action of NPH insulin, increasing the risk of hypoglycemia. The peak action of NPH insulin typically occurs 4-12 hours after administration, so exercising during this time can further lower blood sugar levels. Choices B, C, and D are better options as they suggest exercising at times that are less likely to overlap with the peak insulin action, reducing the risk of hypoglycemia.

Correct Answer: B

Rationale: A client with Addison's disease is at risk for hypovolemia. Addison's disease is characterized by adrenal insufficiency, particularly cortisol and aldosterone deficiency. Aldosterone deficiency leads to impaired sodium and water retention, resulting in decreased blood volume and hypovolemia. This condition can cause hypotension, not hypertension (Choice A), as reduced blood volume leads to decreased pressure. Hypernatremia (Choice C) is unlikely in Addison's disease because of the loss of sodium along with water in hypovolemia. Hypokalemia (Choice D) can occur due to aldosterone deficiency, but it is not the primary complication associated with Addison's disease.