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Table 3 Intra-operative variables of the patients who underwent major surgery

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

  Low Intermediate High
Number of patients (n) 34 10 10
Age (years) 69 ± 15 67 ± 8 67 ± 12
Duration of surgery (min) 174 ± 101 183 ± 73 189 ± 86
Arterial pressure – OR (mmHg) 121 ± 11 118 ± 13 123 ± 11
Arterial pressure – Preop (mmHg) 136 ± 17 140 ± 14 135 ± 11
pH 7.388 ± 0.05 7.420 ± 0.05 7.392 ± 0.04
BE -0.9 ± 2.5 -0.6 ± 1.9 -0.4 ± 2.4
Urine output (ml/h) 239 ± 193 331 ± 346 181 ± 98
Cristalloids (mL) 3045 ± 1590 2895 ± 917 3078 ± 900
Colloids (mL) 580 ± 280 533 ± 57 500 ± 0
Blood transfusion (n) 5 1 1
PaO2/FiO2 (mmHg) 307 ± 141 275 ± 193 243 ± 145
Tidal volume (mL) 679 ± 102 667 ± 129 715 ± 109
Respiratory rate (bpm) 9.9 ± 1.5 9.8 ± 0.6 9.9 ± 1.1
Peak airway pressure (cmH2O) 23.8 ± 6.3 20.8 ± 5.9 24.3 ± 6.2
PEEP (cmH2O) 2.4 ± 2.3 0.9 ± 2.1 3.5 ± 2.4 *
Invasiveness (n) 5.1 ± 1.1 5.4 ± 0.8 5.4 ± 0.8
Contaminated surgery (n) 2 - -
  1. Intra-operative variables of the patients who underwent abdominal or thoracic surgery are presented. * P < 0.05 analysis of variance. Arterial pressure – OR = mean systolic arterial pressure recorded during the intervention; Arterial pressure – Preop = systolic arterial pressure taken at the time of the preoperative evaluation; BE = base excess; FiO2 = fraction of inspired yoghurt; PaO2 = partial pressure of arterial oxygen; PEEP = positive end-expiratory pressure. Invasiveness = sum of invasive procedure including tracheal tube, periferal vein, central vein, arterial line, nasogastric tube, bladder catheter.