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. 2021 May 19;22:351. doi: 10.1186/s13063-021-05310-9

Table 3.

Comparison of the modified Clinical Pulmonary Infection Score (mCPIS) between the two groups of traditional ventilation and protective ventilation on preoperative day 0 and postoperative day 3

Components Day 0 Day 3
Traditional ventilation (n=32) Protective ventilation (n=32) P Traditional ventilation (n=26) Protective ventilation (n=29) P
Temperature (°C)
 36.1–38.4 32 (100%) 32 (100%) > 0.99 26 (100%) 29 (100%) > 0.99
 38.5–38.9 0 0 0 0
 ≥39.0 and ≤36.0 0 0 0 0
Blood leukocytes (/μl)
 ≥4000 and ≤11,000 31 (96.9%) 32 (100%) > 0.99 20 (76.9%) 26 (89.7%) 0.363
 < 4000 and > 11,000 1 (3.1%) 0 > 0.99 6 (23.1%) 3 (10.3%) 0.363
Tracheal secretion
 Few 30 (93.8%) 26 (81.3%) 0.257 17 (65.4%) 25 (86.2%) 0.07
 Moderate 2 (6.2%) 6 (18.7%) 0.257 8 (30.8%) 4 (13.8%) 0.128
 Large 0 0 1 (3.8%) 0 > 0.99
 Purulent 0 0 0 0
PaO2/FiO2 ratio (kPa)
 > 240 or presence of ARDS 32 (100%) 32 (100%) > 0.99 22 (84.6%) 28 (96.6%) 0.286
 ≤240 and absence of ARDS 0 0 4 (15.4%) 1 (3.4%) 0.286
Chest X-ray
 No infiltrate 28 (87.5%) 26 (81.3%) 0.491 13 (50.0%) 22 (75.9%) 0.047
 Patchy or diffuse infiltrate 4 (12.5%) 6 (18.7%) 0.491 12 (46.2%) 6 (20.7%) 0.044
 Localized infiltrate 0 0 1 (3.8%) 1 (3.4%) > 0.99
mCPIS 0.27 (0.67) 0.41 (0.73) 0.449 1.46 (1.27) 0.59 (1.09) 0.010

PaO2 Arterial partial pressure of oxygen, FiO2 Fraction of inspired oxygen, ARDS Acute respiratory distress syndrome, mCPIS Modified clinical pulmonary infection score