Table 1.
Temperature (°C) |
≥36.5 and ≤38.4 = 0 point |
≥38.5 and ≤38.9 = 1 point |
≥39 and ≤36 = 2 points
|
Blood leukocytes (mm3) |
≥4000 and ≤11,000 = 0 point |
<4000 or >11,000 = 1 point + band forms ≥50% = add 1 point
|
Tracheal secretions |
Absence of tracheal secretions = 0 point |
Presence of nonpurulent tracheal secretions = 1 point |
Presence of purulent tracheal secretions = 2 points
|
Oxygenation: PaO2/FiO2, mmHg |
>240 or ARDS (ARDS defined as PaO2/FiO2; or equal to 200, pulmonary arterial wedge pressure) |
≤18 mmHg and acute bilateral infiltrates = 0 point |
≤240 and no ARDS = 2 points
|
Pulmonary radiography |
No infiltrate = 0 point |
Diffuse (or patchy) infiltrate = 1 point |
Localized infiltrate = 2 points
|
Progression of pulmonary infiltrate |
No radiographic progression = 0 point |
Radiographic progression (after CHF and ARDS excluded) = 2 points
|
Culture of tracheal aspirate |
Pathogenic bacteria cultured in rare or light quantity or no growth = 0 point |
Pathogenic bacteria cultured in moderate or heavy quantity = 1 point |
Same pathogenic bacteria seen on Gram stain, add 1 point |
Adapted from Singh et al. (79).