Skip to main content

Table 2 Sleep apnea variables

From: Surgical outcomes associated with sleep apnea syndrome in Stanford A aortic dissection patients

Variables

All patients (n = 155)

SAS+ (n = 89)

SAS (n = 66)

p-value

AHI (events/h)

30.5 ± 22.5

38.8 ± 21.3

17.9 ± 12.8

< 0.001

4% ODI (events/h)

21.3 ± 20.3

32.8 ± 23.3

12.5 ± 11.6

< 0.001

Epworth sleepiness scale

6.70 ± 2.38

7.05 ± 1.98

6.55 ± 1.77

0.106

Obstructive apnea index (events/h)

11.3 ± 12.5

12.5 ± 9.2

10.8 ± 7.4

0.205

Central apnea index (events/h)

14.9 ± 9.5

15.5 ± 8.9

13.4 ± 7.8

0.128

Longest obstructive apnea time (s)

52.1 ± 38.8

53.9 ± 27.6

55.6 ± 28.4

0.709

Baseline SaO2 (%)

97 ± 3

97 ± 2

97 ± 3

1.000

Average SaO2 (%)

98 (94,99)

94 (91,97)

98 (96,100)

0.028

Minimum SaO2 (%)

94 (90,95)

93 (89,95)

94 (90,96)

0.898

Heart rate during sleep (bpm)

60 (54, 90)

59 (56, 94)

62(51, 89)

0.466

  1. Data are expressed as mean ± standard deviations (SD), median ( first quartile, third quartile ) or number (%). Chi-square or Fisher test for categorical variables and t test or wilcoxon rank sum test for continuous variables
  2. SAS Sleep apnea syndrome; SAS+ SAS-positive; SAS SAS-negative; AHI Apnea hypopnea index; ODI Oxygen desaturation index; bpm Beats per minute