Temperature |
≥36.5 or ≤38.4 = 0 point |
≥38.5 or ≤38.9 = 1 point |
≥39 or <36.5 = 2 points |
Blood leukocytes, microL |
≥4000 or ≤11,000 = 0 points |
<4000 or >11,000 = 1 point |
Band forms ≥50 percent = 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 (defined as PaO2/FIO2 ≤200, PAWP ≤18 mmHg and acute bilateral infiltrates) = 0 points |
PaO2/FIO2 ≤240 and no ARDS = 2 points |
Pulmonary radiography |
No infiltrate = 0 point |
Diffuse (patchy) infiltrate = 1 point |
Localized infiltrate = 2 points |
Progression of pulmonary infiltrate |
No radiographic progression = 0 point |
Radiographic progression (after HF and ARDS excluded) = 2 points |
Culture of tracheal aspirate |
Pathogenic bacteria cultured in rare or few quantities 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 |
Total (a score of >6 was considered suggestive of pneumonia) |
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