Table 2: Blood gas analysis.

 

Blood Gas Analysis

All Patients

(n = 101)

Successful Extubation

(n = 90)

Failed Extubation (n = 11)

p value

Median SD

Median SD

Median SD

Arterial

PCO2 (mmHg)

37.20 5.57

36.8 5.58

40 5.49

0.21

PO2 (mmHg)

117.80 29.26

117.65 29.69

121.90 26.54

0.61

HCO3 (mm/L)

25.70 3.56

25.70 3.47

26.00 4.36

0.57

PA-a O2 (mmHg)

91.50 36.69

95.75 34.26

84.80 54.93

0.61

O2 Sat (%)

98.50 0.69

98.50 0.69

98.60 0.69

0.57

Venous

PCO2 (mmHg)

45.10 5.81

45.10 5.74

48.60 6.54

0.25

PO2 (mmHg)

38.80 6.73

38.8 6.09

49.30 10.71

0.61

HCO3 (mm/L)

28.30 3.91

28.30 3.90

27.00 4.26

0.98

PA-a O2 (mmHg)

156.07 21.03

157.85 20.29

152.30 26.82

0.23

O2 Sat (%)

73.90 7.51

73.95 7.23

73.60 9.86

0.92