1 MCQs in Pediatrics for NEET PG
A 14-year-old boy born at 28 weeks gestation with a history of bronchopulmonary dysplasia (BPD) requiring oxygen supplementation until 36 weeks post-menstrual age presents for pulmonary function testing. His spirometry shows reduced FEV₁ and FEV₁/FVC ratio with evidence of small airway disease. The flow-volume loop demonstrates the finding marked **B** — a concave scooped expiratory limb. Which of the following best explains the pathophysiological basis for this spirometric pattern in BPD survivors?
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