1 MCQs in Medicine for NEET PG
A 28-year-old woman presents with a 3-month history of intermittent dyspnoea and dry cough, worse at night and with exercise. Clinical examination is unremarkable. Baseline spirometry shows FEV1 87% predicted with normal FEV1/FVC ratio. A methacholine bronchoprovocation test is performed following standard ATS/ERS protocol. The result marked **A** in the diagram (PC20 ≤ 4 mg/mL) is obtained. Which of the following best describes the clinical significance of this finding?
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