New 2012 Berlin Definition for ARDS

The new 2012 definition for Acute Respiratory Distress Syndrome (ARDS) (published in JAMA June 2012)


According to the previous definition published in 1994 by the American-European Consensus Conference (AECC), ARDS must have the following 4 criteria:

the onset must be acute
there must be hypoxemia with PaO2/FIO2 ratio ≤ 200
there must be bilateral infiltrates on CXR
these findings cannot be