Table 4. Clinical Pulmonary Infection Score (CPIS).
ARDS: acute respiratory distress syndrome
Interpretation of the tool: minimum score = 0; maximum score = 12; score>6 tells there is a maximum chances of developing infection
Credits: Jerome Pugin
Permission for the CPIS tool [16] was taken from the tool creator for using the tool
| Criteria | Points |
| Patient temperature | |
| ≥36.5 degrees C and ≤38.4 degrees C | 0 |
| ≥38.5 degrees C and ≤38.9 degrees C | 1 |
| ≥39 degrees C | 2 |
| WBC | |
| ≥4,000/mm-3 and ≤11,000/mm-3 | 0 |
| <4,000/mm-3 or >11,000/mm-3 | 1 |
| <4,000/mm-3 or >11,000/mm-3 with ≥500 bands | 2 |
| Tracheal secretions | |
| No secretion or mild | 0 |
| Moderate | 1 |
| large and purulent | 2 |
| PaO2 (mmHg)/FiO2 | |
| >240 or ARDS present | 0 |
| ≤240 or no ARDS present | 2 |
| Chest X-ray | |
| No infiltrate | 0 |
| Patchy or diffuse infiltrate | 1 |
| Localized infiltrate | 2 |
| Quantitative pathogenic bacterial culture growth from tracheal aspirate | |
| ≤10000 or no growth | 0 |
| >10000 | 1 |
| Bacteria seen on Gram stain | 2 |