Fulminant Severe CAP - an Observational Study

Plain-language summary

Severe community-acquired pneumonia (CAP) represents a major cause of hospital mortality. Among severe CAP cases, some exhibit a rapidly progressive evolution, leading to severe ARDS/acute respiratory failure and septic shock within hours to a few days. This type of pneumonia, known as "fulminant pneumonia," is characterized by its rapid onset and deterioration, often necessitating immediate medical intervention. Despite its severity, the true incidence and optimal treatment for fulminant pneumonia are not well understood. This knowledge gap is due to the lack of attention towards pneumonia as a potential time-dependent illness and the separation of overlapping clinical topics: severe pneumonia, ARDS, and sepsis. In clinical practice, pneumonia is the most frequent cause of both ARDS and sepsis. However, these conditions are often considered separately, combining ARDS and sepsis from various extra-pulmonary causes with those originating from pneumonia. The COVID-19 pandemic, with its vast number of severe CAP cases in a short period, has highlighted the existence of fulminant pneumonias, underscoring the need for further investigation. Recent randomized clinical trials (RCTs) and experiences from COVID-19 have suggested that early and prolonged corticosteroid administration can reduce mortality in patients with severe SARS-CoV-2 infection and severe CAP/ARDS of bacterial origin. The aim of this observational study is to analyze the rate of fulminant pneumonia and assess the impact of early corticosteroid treatment in a multicentric population of hospitalized patients with severe pneumonia.

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