支气管肺发育不良 (bronchopulmonarydysplasia,BPD)是常发生于早产儿长期应用高浓度氧气和辅助机械通气后的一种慢性肺疾病。随着新生儿重症监护技术的迅速发展 ,越来越多的早产儿和极低体重儿得以存活 ,但BPD的发病率并未随之显著降低甚或有增高趋势 ,是新生儿重症监护的重要 Bronchopulmonary dysplasia (BPD) is a chronic lung disease that often occurs in preterm infants after long-term application of high oxygen and auxiliary mechanical ventilation. With the rapid development of neonatal intensive care technology, more and more preterm and very low birth weight children can survive, but the incidence of BPD has not been significantly reduced or even increased, which is important in neonatal intensive care