Patient characteristics

Age years56 (51–65)
Male4 (40)
Caucasian10 (100)
 ARDS6 (60)
 Hypercapnia2 (20)
 Cardiogenic shock1 (10)
 Pulmonary embolism1 (10)
Type of extracorporeal circulation
 ECMO8 (80)
  Oxygen flow rate L·min−162.4±1.3
 ECCO2R2 (20)
  Oxygen flow rate L·min−15.2±1.3
Respiratory variables
 Minute ventilation L·min−18.0±2.9
 Tidal volume mL412±158
 PEEP cmH2O11±4.5
ICU LOS days36 (35–57)
Duration of eNose monitoring h73 (72–113)

Data are presented as median (interquartile range), n (%) or mean±sd. ARDS: acute respiratory distress syndrome; ECMO: extracorporeal membrane oxygenation; ECCO2R: extracorporeal carbon dioxide removal; PEEP: positive end-expiratory pressure; ICU: intensive care unit; LOS: length of stay.