PATHOGENESIS OF HEMORRHAGIC PULMONARY EDEMA AND MASSIVE PULMONARY HEMORRHAGE IN THE NEWBORN
1 Departments of Paediatrics and Clinical Haematology, University College Hospital Medical School, London, and the Department of Child Health, University of Southampton Medical School, Southampton, England
Clinical observations, coagulation studies, and analysis of simultaneously obtained samples of lung effluent and arterial or venous blood for hematocrit and protein composition as determined by gel filtration were performed on 15 infants collapsing with blood stained liquid flowing from their tracheas. The results indicate that (1) The lung effluent was in most cases hemorrhagic edema fluid and not whole blood. (2) The most important precipitating factor was probably acute left ventricular failure due to asphyxia, although other factors favoring increased filtration of liquid from pulmonary capillaries or causing lung damage may have played a contributory role in pathogenesis. (3) Coagulation disorders probably served to exacerbate the condition but not initiate it.
Submitted on July 3, 1972Accepted on September 22, 1972
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