To control asthma, a client in a residential treatment facility uses a fluticasone propionate and salmeterol discus inhalation system, which provides an inhaled powdered form of these combined medications. Which instruction should the nurse provide to this client's caregivers?

A) When using the discus, have the client breathe out rapidly into the mouthpiece: This instruction is incorrect because the client should not breathe out into the discus mouthpiece. Exhaling into the device could result in moisture entering the discus, which may cause the medication powder to clump, reducing the dose received and potentially making the device unusable. B) Offer the discus to the client for use during an acute asthma attack: This is not appropriate because fluticasone and salmeterol discus is not a rescue inhaler. It is a long-acting bronchodilator and corticosteroid combination meant for maintenance therapy, not for quick relief during an acute asthma attack. Short-acting bronchodilators like albuterol are used for immediate relief. C) Clients using the discus may experience decreased blood pressure: There is no known association between the use of the fluticasone/salmeterol discus and decreased blood pressure. The primary side effects associated with this medication include potential respiratory effects, such as throat irritation, and not systemic cardiovascular effects like low blood pressure. D) Explain that the client should not use the discus more than twice daily: This is the correct instruction because the fluticasone/salmeterol combination is designed for maintenance therapy and should not be used more than twice daily. Overuse can increase the risk of side effects, such as oral thrush, hoarseness, or more serious systemic effects from the corticosteroid and long-acting beta-agonist components.