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Table 1 Demographic parameters

From: Long-term CPAP treatment partially improves the link between cardiac vagal influence and delta sleep

 

SAHS patients

SAHS patients

Healthy controls

 

before CPAP

with CPAP

 

N

8

8

14

Age (years)

45,6 ± 6,7

49,9 ± 7

44,0 ± 6,2

BMI (kg/m2)

30,45 ± 5,75*

31,87 ± 4,5*

24,13 ± 2,34

SBP (mmHg)

110,0 ± 22,7

120 ± 30,7

118,2 ± 11,7

DBP (mmHg)

90,0 ± 31,6

99,3 ± 24,9*

70,4 ± 8,9

Nicotine (cig/day)

8,13 ± 10,33

0,00 ± 0,00

2,64 ± 7,19

Alcohol (U/day)

0,75 ± 1,66

0,67 ± 1,16

0,36 ± 0,6

Caffeine (100 mg/day)

2,63 ± 2,05

3,00 ± 0,00

2,72 ± 2,05

AHI (evts/h)

63,50 ± 22,89***

5,50 ± 4,38

3,79 ± 3,17

OAI (e vts /h)

16,90 ± 12,38***

1,37 ± 2,15

0,88 ± 1,10

CAI (e vts /h)

6,65 ± 5,71**

0,60 ± 1,45

0,72 ± 1,24

MAI (e vts /h)

22,21 ± 21,43***

0,1 ± 0,28

0,02 ± 0,08

HypoI (e vts /h)

17,51 ± 9,22***

3,48 ± 2,50

2,21 ± 1,63

Mean SaO2 (%)

87,88 ± 5,36*

92,50 ± 2,00

93,19 ± 1,47

Bilateral PLMI (evts/h)

11,83 ± 19,08

2,36 ± 2,38

0,59 ± 0,91

  1. SAHS, Sleep apnea-hypopnea syndrome; CPAP, Continuous positive airway pressure; BMI, Body mass index; SBP, Systolic blood pressure; DBP, Diastolic blood pressure; cig, Cigarettes; U, Units; AHI, Apnea-hypopnea index; OAI, Obstructive apnea index; CAI, Central apnea index; MAI, Mixed apnea index; HypoI, Hypopnea index; e vts /h, Events per hour; SaO 2 , Mean arterial blood oxygen saturation; PLMI, Periodic leg movement index. Results expressed as mean ± standard deviation. * P < 0,05, ** P < 0,01, *** P < 0,001 vs. healthy controls.
  2. Patients suffering from severe SAHS showed large values for all sleep breathing events and increased BMI in comparison to healthy men (controls). Patients treated by CPAP had larger BMI and DBP than controls.
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