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[Pulmonary edemas of infectious origin]
Annales De L'Anesthesiologie Francaise
|January 1, 1975
Summary
Rare infectious diseases can cause diffuse pulmonary edema, presenting as acute asphyxia or subacute pneumonia. These conditions may lead to respiratory failure due to lung lesions and fibrosis.
Area of Science:
- Pulmonary Medicine
- Infectious Diseases
- Pathology
Background:
- Diffuse pulmonary edema typically occurs with hemodynamic disorders.
- Infectious etiologies for pulmonary edema, especially without hemodynamic compromise, are uncommon.
- Understanding the specific mechanisms of non-hemodynamic pulmonary edema in infections is crucial.
Observation:
- Infectious pulmonary edema presents in two forms: acute asphyxic lung edema and subacute dyspneic pneumonia.
- These conditions are characterized by hypoxemia and normal or low carbon dioxide levels (hypo- or normocapnia).
- Progressive respiratory failure can develop, stemming from diffuse interstitial lesions and intra-alveolar hyaline deposits.
Findings:
- Bronchiolo-alveolar lesions are induced by pathogenic agents, primarily myxoviruses (like influenza), and less commonly adenoviruses or herpesviruses.
- These viral infections lead to a fibrin-rich exudate.
- The contribution of bacteria and parasites to these specific lung lesions remains uncertain.
Implications:
- This research highlights viral infections, particularly influenza, as significant causes of non-cardiogenic pulmonary edema.
- Early recognition of these distinct clinical presentations is vital for timely intervention.
- Further research is needed to clarify the role of bacterial and parasitic co-infections in the pathogenesis of infectious pulmonary edema.