Chronic lung disease, also known as bronchopulmonary dysplasia, is a long-term respiratory condition, which occurs mainly in infants who were extremely premature at birth. Some babies require mechanical ventilators for several months, even after they leave the hospital. But most babies can be weaned from ventilators by the end of their first year. Babies with chronic lung disease have increased risk of respiratory infection and may have to be re-hospitalised.
