Persistent asthma — USMLE Step 3 MCQ
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Correct answer: C — Step up controller therapy with an inhaled long-acting beta agonist combination
Uncontrolled asthma on low-dose inhaled corticosteroid warrants step-up controller therapy, commonly an ICS-LABA combination.
Reference: NHLBI/NAEPP Asthma Focused Updates; GINA Strategy 2025