Table 2.

Berlin Criteria for ARDS (25)

ARDS Severity	$R=P_{{\text{AO}}_2/{\text{FiO}}_2}$	PEEP
Mild	300 > R > 200	≥5
Moderate	200 > R > 100	≥5
Severe	R < 100	≥5

ARDS, Acute respiratory distress syndrome.