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Table 3 Comparison of sleep breathing monitoring indicators in patients with and without OSA

From: The clinical characteristics of patients with pulmonary hypertension combined with obstructive sleep apnoea

Variable

No OSA

OSA

P value

Numbers

105

35

NS

AHI/h*

1.6 ± 1.2

16.2 ± 12.7

 < 0.001

AI, /h*

0.3 ± 0.5

3.9 ± 9.6

 < 0.001

OAI, /h*

0.3 ± 0.5

3.3 ± 7.6

 < 0.001

CAI, /h

0.0 ± 0.0

0.6 ± 0.5

0.822

Mean SaO2, %*

91.90 ± 4.68

88.89 ± 4.86

0.439

Minimum SaO2, %*

83.52 ± 7.13

75.8 ± 11.55

0.002

SaO2 < 90%, min*

74.97 ± 117.64

166.30 ± 148.17

0.001

SaO2 < 80%, min*

9.81 ± 47.68

19.93 ± 62.81

0.085

SaO2 < 70%, min*

2.51 ± 25.03

5.21 ± 16.12

0.327

  1. Data are presented as mean ± SD or median (interquartile range). AHI, apnoea and hypopnea index; AI, apnoea index; OAI, obstructive apnoea index; CAI, central apnoea index; mean SPO2, mean oxygen saturation (night); minimum SPO2 minimal oxygen saturation (night)