Table 2 Main characteristics of the included patients at the time nosocomial infection was clinically suspected.
Mean (SD) or number (%) | Nosocomial infection n = 47 | Unproven nosocomial infection n = 23 | p |
|---|---|---|---|
Time elapsed from ICU admission (N. of days) | 16.1 (10.8) | 13.5 (7.9) | 0.307 |
Mechanical ventilation length (N. of days) | 18.2 (16.5) | 13.5 (9.0) | 0.214 |
Temperature (°C) | 37.6 (1.5) | 37.6 (1.3) | 0.958 |
Heart rate (bpm) | 110 (23) | 105 (25) | 0.387 |
Respiratory rate (bpm) | 30 (8) | 28.1 (7) | 0.367 |
PaO2/FIO2 (mmHg) | 226 (125) | 217 (119) | 0.777 |
MAP (mmHg) | 64 (15) | 73 (20) | 0.061 |
Vasopressor requirement (Yes/No) | 20 (42) | 6 (26.1) | 0.282 |
SOFA score | 6.9 (4.1) | 7.2 (3.9) | 0.706 |
Previous exposure to steroids | 20 (42) | 6 (26.1) | 0.282 |
WBC count (103 cells/mm3) | 17.1 (11.8) | 13.6 (7.0) | 0.226 |
CRP (mg/L) | 130.1 (104.3) | 95.6 (60.5) | 0.238 |
PCT D0 (ng/mL) | 5.5 (9.4) | 0.7 (1.2) | 0.018 |
ΔPCTD-1, D0 * | +5.8 (1.3) | -0.5 (10.4) | 0.035 |
ΔPCTD-2, D0 ** | +2.7 (6.9) | -0.9 (2.2) | 0.048 |
ΔPCTD-3, D0 *** | +4.3 (10.1) | -1.2 (2.7) | 0.032 |
Platelet count (cell/mm3) | 185,459 (118,375) | 235,935 (183,485) | 0.028 |
Creatininemia (μmol/L) | 172.6 (136.9) | 146.3 (164.9) | 0.492 |
Lactate (mmol/L) | 2.1 (0.9) | 1.5 (0.4) | 0.055 |