Changes in cardiorespiratory parameters within 60 s after the apnoeic episode
| Mode of respiratory support | Baseline before apnoea Mean (SD) | Mean (95% CI) | P value | Comparison nHFOV vs nCPAP* | |
| ∆SpO2 | nHFOV | 93 (4) | −5.4 (−4.4 to −6.4) | <0.001 | 3.6 (2.7 to 4.6) |
| nCPAP | 92 (5) | −9.4 (−7.7 to −11.0) | <0.001 | F=14.5, p<0.001 | |
| ∆HR | nHFOV | 166 (14) | −7.8 (−5.8 to −9.7) | <0.001 | 15.9 (13.4 to 18.5) |
| nCPAP | 161 (15) | −23.7 (−17.9 to −29.4) | <0.001 | F=37.0, p<0.001 |
*The F value is the test statistic of the analysis of variance and corresponds to the variation between subjects divided by the variation within subjects. P values of the mixed-model analysis of variance are shown.
∆HR, change in heart rate within 60 s after the apnoeic episode; nCPAP, nasal continuous positive airway pressure; nHFOV, non-invasive high-frequency oscillatory ventilation; ∆SpO2, change in oxygen saturation within 60 s after the apnoeic episode.