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Table 2 Baseline characteristics and pre-extracorporeal membrane oxygenation ventilator settings and gas exchange variables

From: Spontaneous breathing in patients with severe acute respiratory distress syndrome receiving prolonged extracorporeal membrane oxygenation

Characteristics

Awake ECMO (n = 12)

Age (years)

39.1 ± 16.4

Female, n (%)

5 (41.7%)

Body mass index (kg/m2)

25.8 ± 5.3

APACHE II score

17.0 (13.5, 21.5)

Murray score

3.4 (2.8, 3.8)

Duration of IMV(day)

3.2 (1.0, 4.7)

Pre-ECMO variables

 VT (ml)

390.0 (216.5, 440.5)

 VT pbw (ml/kg)

6.6 (3.3, 7.1)

 Respiratory rate (bpm)

30.0 (25.0, 31.0)

 Pplat (cmH2O)

31.0 (24.0, 32.5)

 PEEP (cmH2O)

14.0 (8.5, 16.5)

 FiO2

1.0(1.0, 1.0)

 pH

7.40 (7.33, 7.43)

 PaCO2 (mmHg)

46.2 (42.9, 52.0)

 PaO2/FiO2

61.8 (50.6, 90.4)

 Lac (mmol/L)

1.8 (1.4, 2.8)

  1. Definition of abbreviations: APACHE II Acute Physiology and Chronic Health Evaluation II, COPD chronic obstructive pulmonary disease, FiO2 fraction of inspired oxygen, IMV invasive mechanical ventilation, PaCO2 Partial pressure of carbon dioxide in arterial blood, PaO2 Partial pressure of oxygen in arterial blood, PEEP positive end-expiratory pressure, Ppeak peak airway pressure, VT tidal volume, VT pbw predicted body weight of tidal volume