Table 1

Lung injury score

Value
Chest x ray score
 No alveolar consolidation0
 Alveolar consolidation in one quadrant1
 Alveolar consolidation in two quadrants2
 Alveolar consolidation in three quadrants3
 Alveolar consolidation in four quadrants4
Hypoxaemia score
 PaO2/FiO2 > 3000
 PaO2/FiO2 225–2991
 PaO2/FiO2 175–2242
 PaO2/FiO2 100–1743
 PaO2/FiO2 < 1004
Positive end expiratory pressure score (when ventilated)
(cm H2O)
< 50
 6–81
 9–112
 12–143
 > 154
Respiratory system compliance score (when ventilated)
(ml/cm H2O)
> 800
 60–791
 40–592
 20–393
 < 194
Final score1-150
 No lung injury0
 Acute lung injury0.1–2.5
 Severe injury (ARDS)> 2.5
  • 1-150 Obtained by dividing the aggregate sum by the number of components that were used.