Respiratory CAS Practice Exam

Rinsing the mouth after inhaled corticosteroids targets the residue left in the mouth and throat after inhalation. That local exposure can suppress the normal oral defenses and allow Candida species to overgrow, leading to oral candidiasis (thrush). Removing the medication from the mucosa with a quick mouth rinse directly reduces this risk, making it the best protective measure.

Pneumonia involves the lungs and systemic effects of steroids, so rinsing the mouth won’t prevent that. Laryngeal irritation and coughing can be affected by reducing local deposition, but the most clear and direct preventive benefit of rinsing is against oral thrush.