Table 3.
Parameters derived from cycle-based analysis in different Pes and flow pressure groups during NREM stage 2.
| Parameters | Normal cycles group | FL(−) | Minimal flow limitation group | FL(+) |
|---|---|---|---|---|
| RRHF | 33.0 ± 23.5 | 33.0 ± 24.7 | 36.2 ± 26.7*† | 35.7 ± 23.5*† |
| RRLF | 40.1 ± 18.3 | 39.9 ± 18.0 | 44.7 ± 25.7 | 39.0 ± 17.5 |
| LF/HF | 1.93 ± 0.97 | 2.01 ± 1.01 | 1.90 ± 0.91 | 1.66 ± 0.80*† |
| PPGres | 4.10 ± 1.66 | 4.18 ± 1.55 | 4.46 ± 1.51*† | 4.64 ± 1.62*† |
*p < 0.05 compared to normal cycles group.
†p < 0.05 compared to flow limitation without efforts.
Pes, esophageal pressure; RRHF, respiratory-related RR oscillation; RRLF, “calculated” LF RR oscillation; PPGres, respiratory-related PPG oscillation; FL(−), flow limitation without effort group; FL(+), flow limitation with efforts group.