摘要：Bronchopulmonary dysplasia (BPD) is a chronic lung disease of preterm infants with multiple factors affected from prenatal to postnatal periods. Despite the great advances in neonatal care over almost 50 years, the rates of BPD are not decreased and may even have risen. Since more preterm infants even in periviable gestational age are survived nowadays, different stages of lung development have an effect on the pathogenesis of BPD. Hence the definition of BPD had been changed from 'old' BPD and 'new' BPD. In this review, the various definition of BPD, risk factors from prenatal to postnatal periods, management strategies according to different phases, and future directions for research fileds are discussed.
