Table 1.
Comparison of respiratory parameters in rapid eye movement (REM) and non-REM sleep.
| Total Sleep | Non-REM Sleep | REM Sleep | |
|---|---|---|---|
| Time (minutes) | 447.0 | 282.0 | 165.0 |
| Central apneas | 188 | 137 | 51 |
| Post arousal/sigh (%) | 19.1% | 20.4% | 15.7% |
| Spontaneous (%) | 51.6% | 39.4% | 84.3% |
| Periodic breathing (%) | 29.3% | 28.8% | 0.0% |
| Central apnea index (events/h) | 25.2 | 28.9 | 18.5 |
| Periodic breathing (minutes) | 25.0 | 25.0 | 0 |
| Obstructive apneas/hypopneas | 0/35 | 0/14 | 0/21 |
| Obstructive AHI (events/h) | 4.7 | 3.0 | 7.6 |
| Average saturation | 96.2% | 96.2% | 96.1% |
| Nadir saturation | 87% | 85% | 87% |
| Average ETCO2 (torr) | 40.0 | 40.4 | 39.3 |
AHI = apnea-hypopnea index, ETCO2 = end-tidal CO2.