2
A 5-year-old child presents with recurrent nighttime cough and wheezing occurring more than twice per week for the past 3 months. Spirometry shows reversible airway obstruction with FEV1 improvement of 15% after bronchodilator therapy. What is the most appropriate initial controller therapy?
A
Daily oral prednisolone
B
Low-dose inhaled corticosteroid therapy
C
Long-acting beta-agonist monotherapy
D
Routine antibiotic therapy