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Table 1 Patients’ main characteristics

From: Variation of poorly ventilated lung units (silent spaces) measured by electrical impedance tomography to dynamically assess recruitment

Patient Sex Age (years) BMI SAPS II score (at ICU admission) SOFA score (on day of study) Etiology of acute respiratory failure Days of intubation before study ARDS (yes or no) PaO2/FiO2 (mmHg)a PEEP (cmH2O)a Outcome
1 M 79 26 33 8 Thoracic trauma 7 Yes 160 8 Nonsurvivor
2 M 90 29 46 7 Sepsis 1 Yes 205 10 Survivor
3 M 71 29 30 10 Postoperative respiratory failure 2 No 230 7 Survivor
4 F 80 35 22 9 Postoperative respiratory failure 5 Yes 263 8 Survivor
5 M 69 33 30 4 Postoperative respiratory failure 2 No 168 8 Survivor
6 M 66 24 40 6 Sepsis 1 No 294 6 Survivor
7 F 85 19 38 5 Septic shock 1 No 273 7 Survivor
8 F 80 33 63 10 Sepsis in hemorrhagic shock 4 Yes 256 10 Survivor
9 F 76 24 33 8 Sepsis 2 No 258 7 Nonsurvivor
10 F 75 22 35 5 Postoperative respiratory failure 1 No 239 6 Survivor
11 F 72 26 38 10 Pneumonia 6 No 175 6 Survivor
12 F 78 35 38 11 Pneumonia 4 No 141 6 Survivor
13 M 71 34 30 9 Pancreatitis 2 Yes 98 12 Survivor
14 M 60 25 29 3 Sepsis 9 No 290 6 Survivor
Mean ± SD 7 M/7 F 75 ± 8 28 ± 5 36 ± 10 7 ± 2   4 ± 5 5 Yes/9 no 217 ± 62 7 ± 2 2 Nonsurvivors/12 survivors
  1. Abbreviations: BMI Body mass index, SAPS II Simplified Acute Physiology Score II, ICU Intensive care unit, SOFA Sequential Organ Failure Assessment, ARDS Acute respiratory distress syndrome, PaO 2 /FiO 2 Ratio of partial pressure of oxygen in arterial blood to fraction of inspired oxygen, PEEP Positive end-expiratory pressure
  2. aBefore starting the protocol (clinical)