Skip to main content
. 2015 Aug 3;2015:653750. doi: 10.1155/2015/653750

Table 1.

Berlin definition of ARDS.

Timing Within one week of a known clinical insult or new or worsening respiratory symptoms.
Chest imaging Bilateral opacities not fully explained by effusions, lobar/lung collapse, or nodules.
Origin of oedema Respiratory failure not fully explained by cardiac failure or fluid overload. Need for objective assessment (e.g., echocardiography) to exclude hydrostatic oedema if no risk factors are present.
Oxygenation  
 Mild 200 mmHg < PaO2/FIO2 ≤ 300 mmHg with PEEP or CPAP ≥ 5 cmH2O
 Moderate 100 mmHg < PaO2/FIO2 ≤ 200 mmHg with PEEP ≥ 5 cmH2O
 Severe PaO2/FIO2 ≤ 100 mmHg with PEEP ≥ 5 cmH2O

PaO2: partial pressure of arterial oxygen; FIO2: fraction of inspired oxygen; PEEP: positive end expiratory pressure; CPAP: continuous positive airway pressure.