Acute Lung Injury

Acute Lung Injury (ALI) is a severe respiratory condition characterized by acute hypoxemic respiratory failure, diffuse alveolar damage, and increased pulmonary vascular permeability, often resulting from direct lung injury (e.g., pneumonia, aspiration) or indirect insults (e.g., sepsis, trauma). It represents a spectrum of severity, with the more severe form known as Acute Respiratory Distress Syndrome (ARDS), defined by specific clinical criteria including bilateral infiltrates on chest imaging, decreased arterial oxygenation, and absence of cardiac failure. ALI is associated with significant morbidity and mortality, requiring supportive care such as mechanical ventilation and management of underlying causes.