Table 1.
Subject characteristics
| Subject | Diagnosis | Age, yr | Sex | BMI, kg/m2 | AHI, events/h | CPAP Rx, cmH2O | Holding Pressure, cmH2O | Pcrit, cmH2O |
|---|---|---|---|---|---|---|---|---|
| 1 | Control | 38 | F | 21.1 | 4 | −4.0 | ||
| 2 | OSA | 56 | M | 26.9 | 24.8 | 8 | 8 | 1.6 |
| 3 | Control | 59 | F | 28.1 | 4 | −4.4 | ||
| 4 | OSA | 46 | F | 44.4 | 76.6 | 8 | 12 | 4.7 |
| 5 | OSA | 46 | M | 26.6 | 46 | 13 | 13 | 6.2 |
| 6 | Control | 28 | M | 24.8 | 5 | 2.1 | ||
| 7 | Control | 28 | M | 23.4 | 6 | −3.4 | ||
| 8 | OSA | 54 | F | 36.9 | 70 | 9–14* | 15 | 7.1 |
Apnea-hypopnea index (AHI) values were from prior clinical polysomnogram, if available.
OSA, obstructive sleep apnea; BMI, body mass index; CPAP, continuous positive-airway pressure; Pcrit, pharyngeal critical closing pressure.
*
On auto-titrating CPAP at the given range of pressures.