Table 2.
Parameters derived from cycle-based analysis during different sleep cycles or positions.
| Position |
Duration of night |
|||
|---|---|---|---|---|
| Parameters | Non-supinea | Supine | First third of sleep | Last third of sleep |
| Nasalnorm | 0.54 ± 0.16 | 0.45 ± 0.16* | 0.51 ± 0.18 | 0.52 ± 0.19 |
| Pes (cmH2O) | 6.94 ± 2.62 | 7.96 ± 3.63* | 7.56 ± 3.51 | 7.63 ± 3.71 |
| Breath length | 4.20 ± 0.54 | 4.18 ± 0.56 | 4.22 ± 0.54 | 4.22 ± 0.57 |
| RRHF | 34.7 ± 26.6 | 34.7 ± 24.6 | 39 ± 24.2 | 36 ± 25.8 |
| RRLF | 40.8 ± 19.5 | 40.2 ± 19.7 | 44.3 ± 21 | 39.6 ± 16 |
| LF/HF | 1.87 ± 0.75 | 1.72 ± 0.82 | 1.7 ± 1.01 | 1.67 ± 0.69 |
| PPGres | 4.14 ± 1.18 | 4.39 ± 1.41 | 4.6 ± 2.3 | 4.4 ± 1.3 |
aNon-supine:lateral sleeping or prone position, *p < 0.05.
Pes, esophageal pressure; RRHF, respiratory-related RR oscillation; RRLF, “calculated” LF RR oscillation; PPGres, respiratory-related PPG oscillation.