Unchanged incidence of bronchopulmonary dysplasia in survivors of hyaline membrane disease.

To test the hypothesis that decreased mortality from severe HMD will result in increased morbidity from BPD, chest films of 30-day survivors of severe HMD were reviewed for evidence of Northway's Stage IV BPD. During July, 1970 to June, 1971, 20 survivors of severe HMD were identified; one case of Stage IV BPD was found in this group. During July 1974-June 1975, 80 survivors of severe HMD were identified; five infants had BPD. In spite of more survivors of severe HMD, no increase in the incidence of BPD could be demonstrated.