ARDS is characterised by all except
In ARDS the type1 pneumocytes and alveolar capillary endothelial cells are injured leading to the loss of normally tight alveolar barrier for fluid and macromolecules. Edema fluid rich in protein accumulates in alveolar spaces leading to decrease in compliance of lung. source : Harrison 20TH edition page 2032
Decreased surfactant
Alveolar transudate
Decreased lung compliance
PaO2 /FiO2 < 200
Respiratory system