Morphological and pathogenetic differences in the respiratory disorders of newborn infants in the first days of life based on data from the composition of tracheobronchial smears

: Six variants of pulmonary pathology are described basing on the differences in composition of tracheobronchial wash-offs. This composition was studied by electron microscopy and biochemical assay of phospholipids in 76 neonates during the first day of life as well as by structural investigation of the lungs in 16 children who had died within two days after birth. The composition of the tracheobronchial wash-offs was compared with lung alterations associated with intrauterine hypoxia, infection, delay of respiratory parenchyma development, brain trauma.