Anemia of Prematurity - Portal Neonatal

PICTURES Section 10 of 11
Picture 1. The lower curve indicates lungs obtained at postmortem from an infant with HMD; these
lungs require far more pressure to achieve a given volume of inflation than do those obtained from
an infant dying of a nonrespiratory cause. The arrows depict the inspiratory and expiratory limbs of
the pressure volume curves. Note the decrease in lung compliance and the higher critical opening
and closing pressures respectively in the premature infant with hyaline membrane disease.
Picture 2. Microscopic appearance of lungs of an infant with respiratory distress syndrome.
Hematoxylin and eosin stain exhibits the presence of hyaline membranes (pink areas).
Picture 3. A schematic outlining of the pathology of respiratory distress syndrome. Infants may
recover completely or develop chronic lung damage, resulting in bronchopulmonary dysplasia.
Picture 4. The bar chart below demonstrates the composition of lung surfactant. Of the 10%
proteins, approximately 1% comprises surfactant apoproteins; the remaining proteins are derived
from alveolar exudate.