[Pulmonary fat embolism after multiple injuries (an experimental morphological study)].

Early morphological changes in the lungs in multiple mechanical damages to the body characterized by lack of hemathorax and fractures of the tubular bones were studied histologically and electron microscopically in 140 random-bred experimental rats. It was shown that initial changes in the lungs consisted of fatty embolism and damage to the pulmonary capillaries endothelium followed by edema of interalveolar septae and circulatory disorders, massive infiltration of interalveolar septae with neutrophilic leukocytes, extensive atelectases. The experimental results supplement and specify the data on the pathogenesis of acute respiratory insufficiency in severe mechanical injuries (polytraumas).