Final answer:
Inhaled glucocorticoids like triamcinolone are preferred for a client with COPD because they have decreased adverse effects compared to oral glucocorticoids. This localized form of treatment delivers medication directly to the lungs, which is the targeted area for treatment, reducing systemic exposure and potential side effects.
Step-by-step explanation:
The client with chronic obstructive pulmonary disease (COPD) is being changed from an oral glucocorticoid to triamcinolone by inhalation. The correct statement by the nurse to the client regarding why this change is necessary is: "Inhaled glucocorticoids are preferred because of decreased adverse effects." This change is made to minimize the systemic side effects that can occur with oral glucocorticoids. Inhaled glucocorticoids deliver the medication directly to the lungs, which is the targeted area needing the anti-inflammatory action, thereby reducing the overall exposure of the medication to the body and the potential for adverse effects.
Oral glucocorticoids have more systemic effects because they are distributed throughout the body. By switching to an inhalation route, triamcinolone will act locally in the lungs and cause fewer systemic effects. However, it is important for the client to understand that inhaled glucocorticoids do not cure COPD but help manage symptoms and inflammation.