Although the pathogenesis is uncertain, it is probable that the symptoms are a consequence of<unk> c pulmonary edema, as the hematocrit is lower than normal blood (usually 15-20% less) and the concentration of small proteins is higher than in plasma. It is postulated that the infant suffers from asphyxia with resultant heart attack; this increases pulmonary microvascular pressure, resulting in pulmonary edema. Contributing factors include factors that favor increased filtration of fluid from pulmonary capillaries (e.g., low concentration of plasma proteins, high alveolar surface tension, lung damage, hypervolemia). Diffuse alveolar<unk>  Diffuse alveolar<unk>  is bleeding from many alveoli throughout the lungs. Common causes include autoimmune diseases and connective tissue diseases. Diagnosis of DAH is often given following observation of a patient presenting with hemoptysis, anemia, and cough, along with a chest X-ray showing alveolar infiltrates in the lungs, which are areas of air space in the lungs that are opacified and of higher density that normal, usually indicating that they are filled with a substance such as pus, blood, or another fluid.
Pulmonary hemorrhage
Pulmonary hematoma
Hemothorax
Pleurisy
Lung infarction
Pneumothorax
Urinothorax
Pleural effusion