Give the P/F ratio values (kPa) used to classify the severity of ARDS?

P/F Ratio (mmHg / kPa)

Mild

26.7 - 39.9 kPa (1) (201 - 300 mmHg

Moderate

13.4 - 26.6 kPa (1) (101 - 200 mmHg)

Severe

≤ 13.3 kPa (1) (≤ 100 mmHg)