Correct Answer: C

Rationale: Erythropoietin primarily stimulates the bone marrow to produce more red blood cells, which helps to improve oxygen delivery to tissues. In chronic kidney disease, patients often develop anemia due to reduced erythropoietin production by the kidneys. By administering exogenous erythropoietin, the deficient hormone is replaced, leading to an increase in red blood cell production and subsequently improving the oxygen-carrying capacity of the blood.

Correct Answer: B

Rationale: Montelukast, a leukotriene receptor antagonist, is primarily prescribed to prevent asthma attacks. It works by reducing inflammation and bronchoconstriction in the airways, thereby helping to control asthma symptoms and prevent exacerbations.

Correct Answer: A

Rationale: The correct answer is hyperglycemia. Prednisone, a corticosteroid, can lead to elevated blood sugar levels as a side effect, particularly in patients with diabetes or those predisposed to developing diabetes. Monitoring for hyperglycemia is crucial to prevent complications like diabetic ketoacidosis and hyperglycemic hyperosmolar syndrome.

Correct Answer: C

Rationale: The absence of hair growth on the legs in a client with diabetes mellitus can be indicative of poor circulation due to compromised blood flow. Assessing the appearance of the skin on the client's legs is crucial as it can reveal additional signs of impaired circulation, such as changes in color, temperature, and the presence of ulcers or wounds. This information aids in the comprehensive evaluation of the client's vascular status and guides appropriate interventions to prevent potential complications.

Correct Answer: B

Rationale: Ipratropium is an anticholinergic bronchodilator that primarily works to relieve bronchospasm by dilating the airways and improving airflow in patients with COPD. It does not have a significant effect on reducing inflammation, suppressing cough, or thinning respiratory secretions.