Objective To discuss risk factors of the BPD of premature infants

and to provide theoretic references for the clinical prevention and treatment of BPD.Method To make a retrospective analysis of the data of the 621 cases of premature infants with gestational ages under 34 weeks and survival rate over 28 dat birth hospitalized at the Newborns Department of Chengdu Central Hospital of Women and Children from January2011 to January 2014

divide them into BPD group and Non-BPD group factually

and conduct a statistical analysis of the numerous risk factors and the occurrence of BPD.Results The rate of BPD occurrence for premature infants was 15.9%.The various risk factors contributing to the occurrence of BPD included gestational age

birth weight

complications such as 5 min asphyxia

pneumonia

bleeding in the lungs

VAP

ARDS

ventilator treatment

PAH

anemia

IUGR

sepsis

prenatal infection

high concentration of oxygen

and infectious disease carrying mothers

among which gestational age

low birth weight

high concentration of oxygen

ventilator treatment

VAP

sepsis

prenatal infection

and growth retardation were independent risk factors of BPD.Conclusion To ensure a normal intrauterine growth of fetus

try to prevent the premature birth

reduce chances for infections

and reduce the rates for lung implications through a rational application of mechanic ventilation are important measures of preventing the BPD of premature infants.