Table 3.
Sleep and arrhythmia parameters in subgroups prior to and following the application of CPAP therapy
| Variable | AHI < 10 (n = 10) | AHI ≥ 10 (n = 41) | p-value* | |||
|---|---|---|---|---|---|---|
| Pressure (cm H2O) | 8.07 ± 0.15 | 8.29 ± 3.50 | 0.647 | |||
| Compliance (h/night) | 4.7 ± 2.5 | 5.8 ± 3.1 | 0.307 | |||
| Pre-CPAP | Post-CPAP | p-value** | Pre-CPAP | Post-CPAP | p-value** | |
| Mean O2 desaturation (%) | 8 % | 7 % | 0.506 | 23 % | 7 % | 0.047 |
| AHI (events/h) | 5.28 ± 1.25 | 3.53 ± 0.35 | 0.189 | 41.01 ± 24.20 | 3.93 ± 2.58 | 0.014 |
| RR interval(>2 s, events/h) | 30.67 ± 38.66 | 35.33 ± 48.34 | 0.051 | 110.89 ± 299.27 | 16.07 ± 58.52 | 0.001 |
| Longest RR (>2 s, second) | 2.68 ± 1.12 | 2.6 ± 0.58 | 0.952 | 13.81 ± 50.29 | 0.53 ± 1.00 | 0.058 |
Values are given as mean ± SD and n %
*Comparison of CPAP parameters between two subgroups at an AHI cut-off point of 10
**Comparison of changes in the sleep and arrhythmia variables at baseline and after CPAP in two subgroups