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Table 2 Ventilator settings and functional parameters on admission to the intensive care unit

From: Prevalence of endotoxemia after surgery and its association with ICU length of stay

   Low Intermediate High
Ventilated patients Admission 62/68 (91%) 16/17 (94%) 17/17 (100%)
  Day 1 6/68 (9%)* 1/17 (6%)* 1/17 (6%)*
Tidal volume (l/min) Admission 6.5 ± 1.8 6.4 ± 1.2 7.3 ± 1.9
  Day 1 / / /
Respiratory rate (atti/minuto) Admission 11 ± 4 11 ± 2 12 ± 7
  Day 1 18 ± 5* 19 ± 5* 16 ± 4*
PaO2/FiO2 (mmHg) Admission 379 ± 111 413 ± 113 372 ± 96
  Day 1 329 ± 62* 330 ± 46* 299 ± 83*
PaCO2 (mmHg) Admission 38.6 ± 4.9 35.1 ± 5.6# 37.7 ± 5.0
  Day 1 39.9 ± 4.7 39.3 ± 5.1* 38.8 ± 4.1
pH arterial blood Admission 7.41 ± 0.05 7.42 ± 0.06 7.39 ± 0.06
  Day 1 7.43 ± 0.03 7.43 ± 0.03 7.43 ± 0.04
Lactate (mmol/l) Admission 1.12 ± 0.57 1.23 ± 0.47 1.40 ± 1.39
  Day 1 0.79 ± 0.38* 0.81 ± 0.37* 0.89 ± 0.57
Heart rate (bpm) Admission 76 ± 16 75 ± 17 77 ± 18
  Day 1 82 ± 15* 80 ± 12 84 ± 15
Mean arterial pressure (mmHg) Admission 88 ± 13 87 ± 13 92 ± 17
  Day 1 91 ± 12 94 ± 13 93 ± 16
Central venous pressure (mmHg) Admission 7.5 ± 2.5 6.3 ± 2.9 7.5 ± 2.2
  Day 1 6.1 ± 2.6 6.1 ± 2.5 6.1 ± 2.7
Hemoglobin (g/dl) Admission 12.0 ± 3.5 12.4 ± 1.8 12.4 ± 1.6
  Day 1 11.3 ± 1.6 11.5 ± 1.7 12.0 ± 1.3
Creatinine (mg/dl) Admission 0.99 ± 0.92 1.06 ± 0.68 0.89 ± 0.37
  Day 1 1.04 ± 1.12 1.05 ± 0.47 0.85 ± 0.27
Azotemia (mg/dl) Admission 36 ± 24 40 ± 21 37 ± 21
  Day 1 37 ± 27 41 ± 24 36 ± 25
Glycemia (mg/dl) Admission 134 ± 30 134 ± 25 132 ± 35
  Day 1 110 ± 29* 111 ± 23* 105 ± 21*
Sodium (Na+; mEq/l) Admission 137.5 ± 2.5 137.1 ± 2.2 137.8 ± 2.1
  Day 1 137.9 ± 2.7 138.4 ± 3.5 138.1 ± 2.7
Potassium (K+;mEq/l) Admission 3.9 ± 0.5 3.9 ± 0.5 3.9 ± 0.4
  Day 1 4.1 ± 0.3* 4.0 ± 0.4* 3.9 ± 0.4
Temperature (°C) Admission 35.2 ± 0.9 34.5 ± 0.9 35.4 ± 1.2#
  Day 1 36.6 ± 0.6 36.7 ± 0.5 36.8 ± 0.5
WBC (103/mm3) Admission 10.8 ± 4.2 12.5 ± 5.5 10.8 ± 5.1
  Day 1 9.4 ± 3.0* 10.4 ± 4.0 10.2 ± 2.7
SIRS criteria Admission 1.4 ± 0.7 1.8 ± 0.8 1.4 ± 0.9
  Day 1 0.9 ± 0.9* 1.3 ± 1.1* 0.9 ± 0.8
  1. Ventilatory and functional parameters collected within four hours of admission to the intensive care unit (Admission) and the morning after (Day 1) are shown in the table. Patients were stratified according to their endotoxin activity levels on admission. * P < 0.05 Admission vs Day 1; # p < 0.05 between EA stratification groups. FiO2 = fraction of inspired yoghurt; PaCO2 = partial pressure of arterial carbon dioxide; PaO2 = partial pressure of arterial oxygen; SIRS = Systemic Inflammatory Reaction Syndrome; WBC = white blood cell.