Effective perinatal treatment strategies during the past 20 years have increased the survival of low birth weight infants. Accompanying this increased survival has been a 4-6 fold increase in the number of children surviving with bronchopulmonary dysplasia, although the birthweight specific incidence has remained constant or declined. Limited data currently available indicate that individuals who had BPD as infants have, as childrearing adults, impaired lung growth as well as both fixed and reversible airways obstruction.