Skip to main content

Table 2 SpO2, pCO2, pO2 and PaO2/FiO2 values measured at each time-point

From: Does prolonged prone position affect intracranial pressure? prospective observational study employing Optic nerve sheath diameter measurements

 

Baseline

(T0)

Post-Prone

1 h

(T1)

Post-Prone

4 h

(T4)

Post-Prone

8 h

(T8)

Post-Prone

12 h

(T12)

Post-Prone

16 h

(T16)

Post-Prone

20 h

(T20)

Post-Prone

24 h

(T24)

p

SpO 2

%

81 (79–83) a

88 (87–90) ab

92 (91–93) bc

93 (92–94) c

94 (93–94) c

94 (93–95) c

94 (93–95) c

94 (93–95) c

< 0.001

Post-hoc

p

T 0 -T 1

1.000

T 1 -T 4

0.709

T 4 -T 8

1.000

T 8 -T 12

1.000

T 12 -T 16

1.000

T 16 -T 20

1.000

T 20 -T 24

1.000

T 0 -T 24

< 0.001

 

pCO 2

mmHg

40 (38–41)

40 (37–41)

40 (38–42)

39 (37–41)

39 (39–41)

41 (39–42)

40 (39–41)

41 (40–42)

0.378

Post-hoc

p

T 0 -T 1

-

T 1 -T 4

-

T 4 -T 8

-

T 8 -T 12

-

T 12 -T 16

-

T 16 -T 20

-

T 20 -T 24

-

T 0 -T 24

-

 

pO 2

mmHg

68.05 ± 4.98 a

72.90 ± 4.18 b

81.38 ± 5.30 c

90.67 ± 6.53 d

103.62 ± 10.00 e

116.62 ± 12.25 f

126.71 ± 13.21 g

139.43 ± 14.38 h

< 0.001

Post-hoc

p

T 0 -T 1

< 0.001

T 1 -T 4

< 0.001

T 4 -T 8

< 0.001

T 8 -T 12

< 0.001

T 12 -T 16

< 0.001

T 16 -T 20

< 0.001

T 20 -T 24

< 0.001

T 0 -T 24

< 0.001

 

PaO 2 /FiO 2

mmHg

84.67 ± 6.16 a

90.76 ± 5.26 b

101.29 ± 6.72 c

112.90 ± 8.18 d

129.14 ± 12.47 e

145.48 ± 15.26 f

158.00 ± 16.51 g

174.00 ± 18.00 h

< 0.001

Post-hoc

p

T 0 -T 1

< 0.001

T 1 -T 4

< 0.001

T 4 -T 8

< 0.001

T 8 -T 12

< 0.001

T 12 -T 16

< 0.001

T 16 -T 20

< 0.001

T 20 -T 24

< 0.001

T 0 -T 24

< 0.001

 
  1. SpO2 and pCO2 are given as median (interquartile range) due to non-normality of distribution. These variables were analyzed with the Friedman’s analysis of variance by ranks. pO2 and PaO2/FiO2 are given as mean ± standard deviation due to normality of distribution. These variables were analyzed with the repeated measures analysis of variance. Post-hoc tests were adjusted by the Bonferroni correction. a−h: Same letters denote the lack of statistically significant differences between the respective time-points
Back to article page

BMC Anesthesiology

ISSN: 1471-2253

Contact us