A nurse is teaching a client who has a new prescription for prednisone to treat rheumatoid arthritis. The client asks how the medication works. How should the nurse respond?

A. Prednisone is a potent glucocorticoid that works by suppressing the immune system and inhibiting the production of inflammatory mediators like prostaglandins and leukotrienes. In rheumatoid arthritis, this action effectively reduces the swelling, pain, and heat within the joints caused by the autoimmune attack on the synovium. This explanation provides the patient with an accurate and scientifically sound understanding of the drug's primary therapeutic goal. B. Prednisone actually increases the risk of infection because it suppresses the overall immune response, including the activity of leukocytes and the production of antibodies. Patients on long-term corticosteroid therapy are considered immunocompromised and must be taught to avoid crowds and report any signs of illness immediately. Stating that the medication reduces the risk of infection is a dangerous medical error that could lead to poor outcomes. C. Corticosteroids like prednisone do not improve blood flow to the kidneys and can actually contribute to fluid retention and hypertension through sodium and water reabsorption. While they may be used to treat certain inflammatory kidney diseases, their primary mechanism is not vasodilatory or related to renal perfusion. This response mischaracterizes the pharmacological action of the drug and provides irrelevant information regarding its use in rheumatoid arthritis. D. Prednisone is well-known for causing significant bone loss and increasing the risk of osteoporosis, rather than protecting bone density. Glucocorticoids inhibit osteoblast activity and decrease calcium absorption in the gastrointestinal tract, leading to decreased bone mineral density over time. Patients on prednisone are often prescribed calcium and vitamin D supplements to counteract these detrimental effects on the skeletal system.