Difference between acute respiratory failure and acute lung injury

Acute lung injury (ALI) refers to all kinds of direct and indirect injuries, resulting in alveolar epithelial cell and capillary endothelial cell injury, diffuse pulmonary interstitial and alveolar edema, resulting in acute hypoxic respiratory insufficiency. Clinically, it is progressive hypoxemia and respiratory distress. Radiologically, the lungs show heterogeneous exudative lesions that progress to a severe stage called acute respiratory distress syndrome. Acute respiratory distress syndrome is one type of acute respiratory failure, so we need to know that acute respiratory failure and acute lung injury are different. Acute respiratory failure can include acute respiratory distress syndrome, which is the severe stage of acute lung injury. After acute lung injury reaches the severe stage, it can eventually develop into acute respiratory failure.