(4 Weeks) Results of the Sleep Position Trainer for Positional Therapy



Fig. 1
Subject wearing the sleep position trainer






Results


Thirty-one patients were enrolled ((27 males); mean age 48.1 ± 11.0 years; mean body mass index 27.0 ± 3.7 kg m−2). The compliance rate was 100 % with a median use of 6.1 h per night (range, 4.1–8.6) over all nights observed. The polysomnographic and clinical characteristics of patients at baseline and after 1 month of SPT are shown in Table 1. As the results show, the total AHI but also the AHI in supine position as well as the percentage of sleep time spent in supine position, desaturation index, apnea index and ESS score presented significant decrease, whereas minimum oxygen desaturation, the percentage of sleep time spent in non-supine position and FOSQ score exhibited significant increase. Sleep efficiency did not change significantly. Individual values of the apnea–hypopnoea index, the percentage of time spent in supine position and ESS and FOSQ scores at baseline and after 1 month of positional therapy are shown in Table 2.


Table 1
Polysomnographic and clinical variables of the study group at baseline and after 1 month of SPT therapy (n = 31)



























































































































 
Baseline

After SPT

p-value

Age, years

48.1 ± 11.0
   

Male sex, %

87.1
   

BMI

27.0 ± 3.7

27.4 ± 4.0

0.387

Compliance rate, %
 
100.0
 

AHI, events/h

16.4 [6.6–29.9]

5.2 [0.5–46.5]

<0.001

AHI in supine, events/h

35.7 [9.3–81.0]

0.0 [0.0–100.7]

<0.001

AHI in non-supine, events/h

3.2 [0.0–16.2]

4.3 [0.1–48.0]

0.052

Average oxygen saturation, %

95.1 ± 1.4

95.5 ± 1.6

0.101

Minimum oxygen desaturation, %

84.5 ± 4.1

88.4 ± 3.6

<0.001

Desaturation index, events/h

11.2 [2.2–22.4]

5.2 [0.9–39.6]

<0.001

Apnea index, events/h

10.4 [1.0–26.3]

2.5 [0.0–21.3]

<0.001

Arousal index, events/h

6.1 [0.0–28.4]

5.5 [0.0–22.8]

0.289

Number of awakenings

4.0 [0.0–60.0]

3.0 [0.0–10.0]

0.323

Total sleep time, min

456 ± 76

429 ± 87

0.187

N2 sleep/total sleep time, %

52.0 ± 8.7

50.0 ± 12.1

0.322

N3 sleep/total sleep time, %

22.4 ± 9.8

21.7 ± 7.7

0.618

REM sleep/total sleep time, %

19.5 ± 5.6

20.9 ± 6.4

0.364

Sleep efficiency, %

89.1 [61.1–99.7]

89.4 [58.0–98.6]

0.544

Percentage supine

49.9 [20.4–77.3]

0.0 [0.0–48.7]

<0.001

Percentage non-supine position

50.1 [22.7–79.6]

100.0 [51.3–100.0]

<0.001

ESS score

11 [2–20]

9 [0–19]

0.004

FOSQ core

86.0 ± 22.1

93.8 ± 21.7

0.001


Data are presented either as mean ± SD or as median [range]

SPT sleep position trainer



Table 2
Individual values of apnea–hypopnoea index, percentage of supine position and Epworth Sleepiness Scale scores of all patients at baseline and after 1 month of SPT therapy





































































































































































































































































































Patient no

AHI

% supine position

ESS

FOSQ

Baseline

After SPT

Baseline

After SPT

Baseline

After SPT

Baseline

After SPT

1

6.6

3.3

63.6

12.0

19

19

88

88

2

12.1

5.2

20.5

0.0

16

9

77

78

3

20.2

15.5

65.6

48.7

2

2

85

99

4

16.2

1.8

32.2

0.0

17

18

36

40

5

21.0

10.2

40.0

10.3

14

10

48

72

6

19.0

9.9

28.8

0.1

11

5

90

111

7

20.8

15.4

24.1

2.7

18

19

71

62

8

11.0

10.1

40.5

0.0

12

13

84

92

9

21.0

16.0

56.0

0.0

10

7

101

101

10

11.7

4.3

77.3

0.0

12

12

97

97

11

10.4

0.5

28.7

0.0

17

3

108

118

12

13.4

4.5

70.4

1.3

4

4

111

116

13

24.0

3.5

59.0

0.0

6

3

91

101

14

23.4

9.6

33.5

0.0

15

14

66

74

15

14.5

6.9

21.4

0.0

3

3

119

119

16

16.2

7.6

49.9

7.5

15

13

63

86

17

27.5

4.7

54.5

8.8

5

1

75

80

18

11.8

3.1

20.4

0.0

9

10

73

76

19

18.3

48.4

21.4

4.0

8

4

90

74

20

16.0

19.5

43.8

1.0

7

8

112

120

21

11.9

3.3

57.3

0.0

20

16

82

114

22

29.8

1.9

50.7

0.4

18

9

55

99

23

29.9

8.8

21.2

9.2

12

13

64

75

24

11.1

6.9

71.1

0.0

9

12

59

56

25

6.8

4.9

33.9

0.0

5

0

118

109

26

21.2

2.1

59.5

11.8

11

2

104

120

27

16.6

5.4

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Oct 17, 2016 | Posted by in PSYCHIATRY | Comments Off on (4 Weeks) Results of the Sleep Position Trainer for Positional Therapy

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