<prompt> Long term complication of bronchopulmonary dysplasia is -a Decreased fuctional residual capacityb Small airway diseasec Large airway diseased Interstitial lung diseaseacdbcdabdab  <response>: 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 membraneThere are four pathalogic stages :Acute lung injury Exudative bronchiolitis Proliferative bronchiolitisObliterative fibroproliferative bronchiolitis. 