A nurse is caring for a child who has cystic fibrosis and requires postural drainage. Which of the following actions should the nurse take?

Rationale: A. A bronchodilator is typically administered before postural drainage and chest physiotherapy to help open the airways, loosen secretions, and improve their mobilization. Giving it after the procedure does not enhance secretion removal during therapy. B. Chest percussion should be performed with a cupped hand, not a flat hand. The cupped shape creates an air cushion that helps loosen thick secretions without causing discomfort or tissue injury. C. Postural drainage should be performed before meals or at least 1–2 hours after meals. This timing helps prevent nausea, vomiting, and aspiration during the procedure, especially in children with cystic fibrosis who have increased mucus production and may have difficulty clearing secretions. D. While frequency depends on the severity of the condition, children with cystic fibrosis often require chest physiotherapy 2–4 times daily, not strictly twice a day for all cases. The key nursing priority is appropriate timing (before meals) rather than a fixed frequency in this question.