A chronic lung disease of babies, when the lungs do not work properly and the babies have trouble breathing. It is often diagnosed when a premature baby with respiratory problems continues to need additional oxygen after reaching 36 weeks gestational age. Also referred to as Chronic Lung Disease (CLD), it is most common in babies who are born before 34 weeks gestation. Doctors think babies get BPD because their lungs are sensitive to something damaging in the environment, such as oxygen, a breathing machine, or an infection.
