Impact of airway opening manoeuvres
| Chin unsupported | Chin lift | Chin+CPAP | Jaw thrust | Jaw+CPAP | |
| Phase angle° | 106±53 | 106±54 | 89±42 | 65±49 | 72±44 |
| IAI % | 70±29 | 60±29 | 55±26 | 41±26 | 46±26 |
| EAI % | 39±23 | 35±20 | 30±13 | 28±19 | 28±21 |
| TTA % | 49±24 | 46±22 | 40±15 | 33±20 | 32±14 |
| ti/ttot | 0.43±0.10 | 0.43±0.09 | 0.38±0.04 | 0.39±0.05 | 0.38±0.05 |
| RF min−1 | 35±8 | 35±8 | 37±10 | 36±9 | 37±10 |
| HR min−1 | 105±14 | 104±15 | 101±15 | 105±15 | 103±16 |
Data are presented as mean±sd
CPAP: continuous positive airway pressure
IAI: inspiratory asynchrony index
EAI: expiratory asynchrony index
TTA: total time spent in asynchrony
ti/ttot: ratio of inspiration to total time
RF: respiratory frequency
HR: heart rate
signigicantly different from “chin unsupported”(p<0.05)
significantly different from chin lift
significantly different from chin lift+CPAP