Calculation of the lung injury score4
| Score | |
|---|---|
| Chest radiograph | |
| No alveolar consolidation | 0 |
| Alveolar consolidation confined to 1 quadrant | 1 |
| Alveolar consolidation confined to 2 quadrants | 2 |
| Alveolar consolidation confined to 3 quadrants | 3 |
| Alveolar consolidation confined to 4 quadrants | 4 |
| Hypoxaemia score | |
| Pao2/Fio2 ≥300 | 0 |
| pao2/Fio2 225–299 | 1 |
| Pao2/Fio2 175–224 | 2 |
| Pao2/Fio2 100–174 | 3 |
| Pao2/Fio2 <100 | 4 |
| PEEP score (when mechanically ventilated) | |
| ≤5 cm H2O | 0 |
| 6–8 cm H2O | 1 |
| 9–11 cm H2O | 2 |
| 12–14 cm H2O | 3 |
| ≥15 cm H2O | 4 |
| Respiratory system compliance score (when available) | |
| ≥80 ml/cm H2O | 0 |
| 60–79 ml/cm H2O | 1 |
| 40–59 ml/cm H2O | 2 |
| 20–39 ml/cm H2O | 3 |
| ≤19 ml/cm H2O | 4 |
| The score is calculated by adding the sum of each component and dividing by the number of components used. | |
| No lung injury | 0 |
| Mild to moderate lung injury | 0.1–2.5 |
| Severe lung injury (ARDS) | >2.5 |