Table 2 Ventilation and ABG values at 1st SBT.

From: Indicators of different outcomes after prolonged weaning

 

All pats

N = 915

Weaning-category 3a

N = 330

Weaning- category 3b

N = 340

Weaning- category 3cI

N = 185

Weaning- category 3cII

N = 60

P

PEEP (mbar)

6.5 ± 2.1

6.7 ± 2.1

6.4 ± 2.1

6.1 ± 2,2

7.0 ± 2.1

0.010

PaCO2 (mbar)

46.3 ± 11.6

42.7 ± 9.7

50.3 ± 11.8

45.5 ± 12,8

45.7 ± 9.3

 < 0.001

PaO2 (mbar)

77.6 ± 18.4

78.8 ± 19.9

77.2 ± 18.2

77.1 ± 16,9

74.5 ± 15.3

0.331

FiO2 (%)

35.3 ± 28.2

42.2 ± 26.2

15.6 ± 23.4

33.3 ± 21.2

41.0 ± 32.7

0.007

Sa02 (%)

95.3 ± 3.2

95.6 ± 2.8

95.1 ± 3.8

95.5 ± 2,9

94.9 ± 2.9

0.250

pH

7.43 ± 0.06

7.44 ± 0.06

7.42 ± 0.06

7.44 ± 0,07

7.43 ± 0.06

0.001

HCO3- mmol/L

29.0 ± 4.2

27.9 ± 3.5

30.1 ± 4.2

28.8 ± 4,9

28.6 ± 4.9

 < 0.001

  1. The characteristics of the patients were categorised according to the respective weaning categories. Group comparisons were performed using the chi-square test for categorical variables and ANOVA for continuous variables, with p-values of < 0.05 considered statistically significant.
  2. ABG arterial blood gas, FiO2 inspiratory fraction of oxygen, HCO3- Bicarbonate, PaCO2 arterial pressure of carbon dioxide, PaO2 arterial pressure of oxygen, PEEP positive end expiratory pressure, pH potential of hydrogen, SaO2 arterial saturation of oxygen, SBT spontaneous breathing trial.
  3. bold numbers: p < 0.05
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