TABLE 3.
OXYGEN DELIVERED
| Control Values | ||||||
|---|---|---|---|---|---|---|
| Trial | FiO2 (%) | VO2 (ml/500 ml) | ||||
| RA | 21.0 | 105 | ||||
| 2LO2 | 28.0 | 140 | ||||
| Conserver Values | ||||||
| Setting 2 |
Setting 5 |
Continuous |
||||
| Device |
FiO2 |
VO2 |
FiO2 |
VO2 |
FiO2 |
VO2 |
| D1 | 25.6 | 128 | 29.6 | 148 | 27.2 | 136 |
| D2 | 21.6 | 108 | 22.4 | 112 | 29.2 | 146 |
| D3 | 25.6 | 128 | 28.0 | 140 | 26.8 | 132 |
| D4 | 27.6 | 138 | 37.6 | 188 | 27.2 | 136 |
| Mean | 25.1 | 126 | 29.4 | 147 | 27.6 | 137 |
Definition of abbreviations: D = device; RA = room air; VO2 = ml of O2 present in a 500-ml breath of air at the stated FiO2; 2LO2 = O2 at a flow of 2 L/min.
Trial indicates resting and exercise protocols while breathing with the various gas delivery systems. Settings 2, 5, and continuous refer to the regulator settings examined.