Causes of hypoxemia | Etiologies of hypoxemia | n (%) | |
---|---|---|---|
ARDS (n = 258) | Pulmonary ARDS, n = 137 (53.1%) | Pneumonia, total | 125 (48.4) |
 Bacterial pneumonia | 87 (33.7) | ||
 Viral pneumonia | 16 (6.2) | ||
 Fungal pneumonia | 22 (8.5) | ||
Aspiration | 8 (3.1) | ||
Vasculitis | 4 (1.6) | ||
Extra-pulmonary ARDS, n = 59 (22.9%) | Extra-pulmonary sepsis | 30 (11.6) | |
Noncardiogenic shock | 9 (3.5) | ||
Transfusion | 6 (2.3) | ||
Drug toxicity | 5 (1.9) | ||
Pancreatitis | 3 (1.2) | ||
Burn | 3 (1.2) | ||
Trauma | 3 (1.2) | ||
Unclassified, n = 62 (24%) | Uncertain | 62 (24) | |
Non-ARDS hypoxemia with PaO2/FiO2 ratios ≤ 300 (n = 294) | Hydrostatic lung edema | 123 (41.8) | |
Pneumonia | 80 (27.2) | ||
Cancer, lung or metastatic cancer | 32 (10.9) | ||
Pleural effusion or diseases | 21 (7.1) | ||
Atelectasis | 16 (5.4) | ||
Lung fibrosis | 9 (3.1) | ||
Other | 13 (4.4) |