Table 1 Baseline data during stable NREM sleep on optimal CPAP in patients with and without OSA.
| Obese OSA (n = 10) | Non‐snorers (n = 15) | |
|---|---|---|
| V̇i (l/min)* | 7.6 (0.5) | 6.3 (0.2) |
| Vt (l) | 0.47 (0.02) | 0.43 (0.02) |
| FB (breaths/min) | 16.3 (0.9) | 14.9 (0.6) |
| TI/TTOT | 0.43 (0.02) | 0.40 (0.01) |
| VT/TI (l/s) | 0.30 (0.02) | 0.26 (0.01) |
| PIF (l/s) | 0.48 (0.02) | 0.42 (0.02) |
| Petco2 (mm Hg) | 41.2 (1.1) | 43.9 (0.7) |
| CPAP (cm H2O)* | 11.5 (0.7) | 5.7 (0.5) |
| PEPI (cm H2O) | −2.48 (0.4) | −1.48 (0.2) |
| EMGGG Peak (%max) | 2.8 (1.1) | 4.1 (1.0) |
| EMGGG Tonic (%max) | 1.0 (0.4) | 1.3 (0.4) |
NREM, non‐rapid eye movement; OSA, obstructive sleep apnoea; CPAP, continuous positive airway pressure; V̇i, ventilation; Vt, tidal volume; TI/TTOT, duty cycle; FB, breathing frequency; PIF, peak inspiratory flow; Petco2, end‐tidal partial pressure of CO2, PEPI, epiglottic pressure; EMGGG, genioglossal electromyography;
Data shown as mean (SE) values.
*p<0.05 between groups.