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Table 1 Baseline patient characteristics

From: Extracorporeal membrane oxygenation for life-threatening asthma refractory to mechanical ventilation: analysis of the Extracorporeal Life Support Organization registry

Variables

Total

N = 272

Survivor

N = 227

Non-survivor N = 45

p

Age

36.2 ± 13.4

34.7 ± 12.5

43.4 ± 15.8

0.001

Male, N (%)

108 (39.7)

93 (40.9)

15 (33.3)

0.356

Weight, kg

88.0 ± 29.1

87.5 ± 28.9

90.9 ± 30.4

0.501

Pre-ECMO blood gasesa

 pH

7.1 ± 0.2

7.1 ± 0.2

7.2 ± 0.2

0.045

 PCO2, mmHg

80.5 ± 50.6

81.1 ± 51.6

77.2 ± 45.5

0.638

 PO2, mm Hg

109.6 ± 113.9

113.0 ± 115.5

91.3 ± 104.2

0.289

 HCO3 -, mmol/L

29.0 ± 9.4

29.2 ± 9.4

27.8 ± 9.6

0.402

 SaO2, %

91.2 ± 10.1

92.3 ± 7.4

85.2 ± 17.3

0.030

Pre-ECMO ventilator setting

 Rate, breaths/min

19.0 ± 7.7

18.6 ± 7.4

21.4 ± 9.4

0.129

 FiO2, %

81.2 ± 23.0

80.2 ± 23.2

87.2 ± 21.1

0.105

 PIP, cmH2O

38.2 ± 11.1

38.1 ± 11.4

38.7 ± 9.1

0.798

 PEEP, cmH2O

8.3 ± 5.9

7.8 ± 5.9

11.5 ± 5.1

0.002

 MAP, cmH2O

21.4 ± 14.2

21.4 ± 15.1

21.3 ± 7.8

0.980

 Driving pressure, cmH2O

29.5 ± 12.9

29.9 ± 13.4

27.4 ± 9.5

0.363

  1. Values are shown as number (%) or mean ± SD
  2. ECMO extracorporeal membrane oxygenation, FiO 2 fraction of inspired oxygen saturation, HCO 3 arterial bicarbonate level, MAP mean airway pressure, PEEP positive end-expiratory pressure, PIP peak inspiratory pressure, PO 2 partial pressure of arterial oxygen, SaO 2 arterial oxygen saturation
  3. aThe worst values in the previous 6 h were collected