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Table 1 Demographic, clinical, respiratory and sleep variables in patients with congenital central hypoventilation syndrome (CCHS) and healthy controls

From: Normal sleep on mechanical ventilation in adult patients with congenital central alveolar hypoventilation (Ondine’s curse syndrome)

 

Patients with CCHS

Healthy Controls

P value

Number

14

15

 

Gender, F/M

9/5

11/4

0.70

Age, y

23.0 (19.0; 24.8)

23.0 (22.0; 26.0)

0.42

Body mass index, kg/m2

21.7 (20.7; 24.0)

21.7 (20.1; 22.8)

0.95

Epworth sleepiness score, 0-24

7 (2; 8)

6 (4; 7)

0.73

NIV/Tracheotomy

10/4

NA

NA

Blood gases

 pH

7.42 (7.38; 7.44)

NA

NA

 PaCO2, mmHg

40 (34; 44)

NA

NA

 PaO2, mmHg

101 (86: 112)

NA

NA

 Awake SpO2, %

98 (96; 99)

NA

NA

 Total sleep period, min

514.5 (489.5; 585.8)

552.0 (522.5; 588.5)

0.47

 Total sleep time, min

484.0 (432.8; 512.3)

500.0 (446.5; 540.0)

0.42

 Sleep efficiency, %

93.7 (82.9; 95.1)

92.9 (88.6; 95.0)

0.86

Latency to, min

 Sleep onset

14.0 (7.0; 20.5)

33.0 (18.0; 49.0)

0.052

 N3

26.3 (24.0; 30.1)

49.5 (34.3; 66.9)

0.005

 REM sleep

64.5 (52.3; 81.5)

64.0 (56.5; 69.0)

0.95

Sleep stages, min

 N1

17.5 (10.5; 25.5)

26.0 (15.5; 32.0)

0.21

 N2

209.5 (187.3; 247.0)

223.0 (190.0; 245.5)

0.65

 N3

117.0 (109.8; 133.8)

120.0 (106.0; 142.0)

0.83

 REM sleep

110.0 (90.3; 122.3)

126.0 (109.0; 133.0)

0.11

Arousals (/h)

13.3 (8.5; 17.4)

11.5 (9.2; 15.2)

0.79

Periodic leg movements (/h)

0.1 (0.0; 3.3)

0.2 (0.0; 0.7)

0.95

  1. NA not available, NIV noninvasive ventilation, Values are median (interquartile range)