Table 3 Patient characteristics during ICU stay
| Â | Subsequent VAP | P-value | |
|---|---|---|---|
|  | Yes n = 17 | No n = 105 |  |
At VAT diagnosis | Â | Â | Â |
Duration of prior mechanical ventilation, d | 8 (3, 18) | 11 (6, 17) | 0.689 |
Prior antibiotic treatment | 11 (64) | 68 (64) | >0.999 |
SOFA score | 6 (6, 9) | 4 (3, 7) | 0.029 |
∆PaO2/FiO2 | 10 (-30, 50) | -12 (-66, 39) | 0.221 |
Temperature | 38 (37.5, 38.6) | 38 (37.6, 38.4) | 0.829 |
Leucocytes | 13.4 (10, 18.9) | 10.6 (7.2, 14.6) | 0.034 |
PCT | 1.1 (0.7, 1.85) | 0.55 (0.22, 3) | 0.515 |
CRP | 52 (18, 135) | 60 (14, 126) | 0.825 |
Antibiotic treatment | Â | Â | 0.002 |
  No | 13 (76) | 35 (33) |  |
  Yes | 4 (23) | 70 (66) |  |
  Appropriate | 2 (11) | 56 (53) |  |
  Inappropriate | 2 (11) | 14 (13) |  |
During ICU stay | Â | Â | Â |
Tracheostomy | 5 (29) | 33 (31) | >0.999 |
Duration of antibiotic treatment, d | 18 (15, 22) | 18 (11, 30) | 0.819 |
Percentage of days in the ICU with antimicrobials | 48 (0, 70) | 51 (0, 70) | 0.595 |
Duration of mechanical ventilation, d | 27 (16, 29) | 22 (13, 35) | 0.553 |
Length of ICU stay, d, mean ± SD | 43 ± 50 | 32 ± 21 | 0.137 |
ICU mortality | 9 (52) | 37 (35) | 0.185 |