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Table 1 Characteristics of the patients at ARDS onset

From: Chest CT scan and alveolar procollagen III to predict lung fibroproliferation in acute respiratory distress syndrome

Variables All patients (n = 192)
Age (years) 60 [48–69]
Sex [n (%) men] 137 (71.4)
Body mass index (kg/m2) 25.8 [21.9–29.2]
SAPS II 47 [38–69]
SOFA 8 [7–11]
Cause of ARDS [n (%)]  
 Pneumonia 104 (54.2)
 Aspiration 28 (14.6)
 Extra-pulmonary sepsis 28 (14.6)
 Othersa 32 (16.6)
Minute ventilation (L/min) 9.3 [6.6–10.8]
Tidal volume (mL/kg PBW) 6.1 [5.0–6.7]
Respiratory rate (cycle/min) 24 [18–27]
Plateau pressure (cmH2O) 25 [21–28]
Driving pressure (cmH2O) 13 [9–16]
Total PEEP (cmH2O) 10 [8–13]
Respiratory system compliance (mL/cmH2O) 26.5 [21.3–36.6]
pH 7.36 [7.29–7.43]
PaO2/FiO2 (mmHg) 129 [92–197]
PaCO2 (mmHg) 43 [36–50]
Ventilator-free days at day 60 (days) 22 [0–46]
Length of ICU stay (days) 24 [12–38]
ICU mortality [n (%)] 69 (35.7)
  1. Values are expressed as median [IQR], except for sex, cause of ARDS and ICU mortality [n (%)]
  2. ARDS acute respiratory distress syndrome, SAPS II simplified acute physiologic score, SOFA sequential organ failure assessment, PBW predicted body weight, PEEP positive end-expiratory pressure, ICU intensive care unit
  3. aChest trauma with lung contusion (n = 18), transfusion-related acute lung injury (n = 10), hemoptysis (n = 4)