Table 4.
Temperature (°C) | Absolute humidity (mgH2O/l) | Relative humidity (%) | |
CPAPVENT with HH | 31.7 ± 1.0a,c | 32.8 ± 1.7a,c | 98.1 ± 1.4a,c |
CPAPVENT without HH | 27.6 ± 1.3a,b | 12.1 ± 3.4a,b | 45.1 ± 10.9a,b |
CPAPLF with HH | 31.4 ± 0.5a,c | 32.0 ± 0.8a,c | 97.2 ± 1.6a,c |
CPAPLF without HH | 26.4 ± 1.3 | 7.4 ± 2.2 | 30.0 ± 8.4 |
CPAPHF with HH | 28.5 ± 0.8c | 24.6 ± 2.1c | 88.3 ± 4.8c |
CPAPHF without HH | 25.9 ± 1.1 | 7.1 ± 1.1 | 29.8 ± 4.8 |
aP < 0.05 versus CPAPHF; bP < 0.05 versus CPAPLF; cP < 0.05 versus each mode of CPAP without HH. CPAP, continuous positive airway pressure; CPAPVENT, ventilator CPAP; CPAPLF, continuous low-flow CPAP; CPAPHF, continuous high-flow CPAP; HH, heated humidifier.