Table 1 CPIS score parameters (Schurink et al., 2004)
1. Body temperature  ≥ 36.5 or ≤ 38.4 = 0 point  ≥ 38.5 or ≤ 38.9 = 1 point  ≥ 39 or < 36.5 = 2 points 2. Total leucocytic count  ≥ 4000 or ≤ 11.000 = 0 point  < 4000 or > 11.000 = 1 point  Rod form ≥ 50% = add 1 point 3. Tracheal secretion  Tracheal secretion (−) = 0 point  Tracheal secretion with less purulence = 1 point  Abundant purulent secretion = 2 points 4. Oxygenization  Pa02/Fi02, mmHg >240 or ARDS (ARDS: Pa02/Fi02 < 200, Pa02/Fi02 < 200, PAWP ≤ 18 mmHg and bilateral acute infiltration) = 0 point  Pa02/Fi02, mmHg ≤ 240 or ARDS = 2 points | 5. Pulmonary infiltration in chest X-ray  No infiltration = 0 point  Diffuse infiltration = 1 point  Localized infiltration = 1 point 6. Progression in pulmonary infiltration  Radiographic progression (−) = 0 point  Radiographic progression (+) (after the  exclusion of HF and ARDS) = 2 points 7. Pathogenic bacteria in tracheal aspirate culture  No or few pathogenic bacteria = 0 point  Moderate or high levels of pathogenic bacteria = 1 point  Pathogenic bacteria to be seen in Gram staining, add 1 point |