Respiratory Distress Syndrome

Several clinical disorders can precipitate the syndrome, including pneumonia, sepsis, aspiration of gastric contents, and major trauma. The grounding also notes that systemic insults such as surgery can precede it. In the COVID-19 literature provided, SARS-CoV-2 infection is described as a trigger for ARDS in a subset of cases.

The syndrome is characterized physiologically by increased permeability pulmonary edema, severe arterial hypoxemia, and impaired carbon dioxide excretion. The literature describes lung injury as being driven by inflammatory mechanisms, including elevated pro-inflammatory cytokines and cytokine storm, with interleukin-6 among the cytokines studied. Signal transduction pathways are also implicated in the inflammatory response and lung damage.

The supplied abstracts identify major trauma and surgery as preceding systemic insults, and list pneumonia, sepsis, and aspiration of gastric contents as precipitating clinical disorders. In the COVID-19 literature, older age is described as an independent risk factor for severe disease progressing to ARDS, and comorbid cardiovascular disease, diabetes, and obesity increase the chance of fatal disease. These factors are presented in the context of COVID-19-associated ARDS rather than as universal risk factors for all cases.

Improved survival has been achieved with lung-protective ventilation. The literature also discusses treatment at the level of cytokine targeting and other interventions aimed at reducing cytokine storm and limiting inflammatory lung injury. Overall management is described as supportive and focused on respiratory failure and the underlying precipitating condition, with novel therapeutics under investigation to enhance lung repair.