Table 1 The North American–European... | American Society of Hematology

Table 1

The North American–European Consensus Conference definition of ALI^15,16

Parameter	Finding
Timing	Acute onset
Pulmonary artery occlusion pressure	≤ 18 mm Hg when measured, or lack of clinical evidence of left atrial hypertension
Chest radiograph	Bilateral infiltrates seen on frontal chest radiograph
Hypoxemia	Ratio of PaO₂/FIO₂ ≤ 300 mm Hg regardless of positive end-expiratory pressure level, or oxygen saturation of ≤ 90% on room air (added by NHLBI working group)

Parameter	Finding
Timing	Acute onset
Pulmonary artery occlusion pressure	≤ 18 mm Hg when measured, or lack of clinical evidence of left atrial hypertension
Chest radiograph	Bilateral infiltrates seen on frontal chest radiograph
Hypoxemia	Ratio of PaO₂/FIO₂ ≤ 300 mm Hg regardless of positive end-expiratory pressure level, or oxygen saturation of ≤ 90% on room air (added by NHLBI working group)