Long term complication of bronchopulmonary dysplasia is -a) Decreased fuctional residual capacityb) Small airway diseasec) Large airway diseased) Interstitial lung disease

Bronchopulmonary dysplasia is a result of lung injury in infants requiring mechanical ventilation and Supplemental oxygen. Following changes are seen : Airway epithelial hyperplasia and squamous metaplasia   Peribronchial as well as interstitial fibrosis. Thickening of basement membrane ​ There are four pathalogic stages : Acute lung injury       Exudative bronchiolitis    Proliferative bronchiolitis Obliterative fibroproliferative bronchiolitis.