(A) All PED BiPAP patients N=1157 | PAS Median (95% CI) | BiPAP non-PICU: total BiPAP Duration of <4 hours, N=832 | PAS Median (95% CI) |
Just before start of BiPAP PAS | 12 (11 to 14) | Just before start of BiPAP PAS | 12 (11 to 14) |
Initial PAS | 13 (12 to 14) | Initial PAS | 13 (12 to 14) |
Final PAS off BiPAP | 4 (4 to 6) | Final PAS off BiPAP | 4 (4 to 5) |
(B) Only PED BiPAP non-PICU patients with ≤4 hours total BiPAP duration, N=832 | Differences Median (95% CI) | p Value | |
Just before BiPAP start PAS−final PAS off BiPAP | 6.0 (5.8 to 6.1) | <0.001 | |
Initial PAS−final PAS off BiPAP | 6.8 (6.7 to 7.0) | <0.001 | |
Initial PAS−just before BiPAP start | 0.9 (0.7 to 1.0) | <0.001 | |
All PED BiPAP patients: PICU, ward and home, N=1157 | Differences | p Value | |
Just before BiPAP start PAS−final PAS off BiPAP | 8.0 (7.8 to 8.1) | <0.001 | |
Initial PAS−final PAS off BiPAP | 8.1 (8.0 to 8.3) | <0.001 | |
Initial PAS−just before BiPAP start | 0.2 (0.03 to 0.29) | 0.01 | |
(C) PICU PED BiPAP patients PAS, N=325 | Median (95% CI) | ||
Initial PAS | 13 (12 to 15) | ||
PAS AT 4 hours of PED BiPAP | 11 (10 to 13) | ||
PAS at when BiPAP taken off | 5 (4 to 6) | ||
PICU PED BiPAP patients PAS, N=325 | Differences | p Value | |
PICU—initial−final PAS off BiPAP | 8.2 (6.7 to 8.3) | <0.001 | |
(D) Patients with 2 hours of PED BiPAP therapy: PAS (N=127) | PAS median (95% CI) | ||
Initial PAS | 12 (11 to 14) | ||
Just before BiPAP start PAS | 13 (12 to 15) | ||
PED BiPAP PAS 30 min before transfer to PICU | 11 (10 to 13) | ||
Final PAS off BiPAP (30 min after BiPAP stoppage) | 4 (3 to 5) | ||
(E) PED BiPAP patients discharge to home (N=52) | PAS median (95% CI) | ||
Initial PAS | 12 (10 to 14) | ||
Just before BiPAP start PAS | 12 (11 to 13) | ||
Final PAS off BiPAP (30 min after BiPAP stoppage) | 5 (4 to 6) | ||
Discharge home PAS 30 min before discharge | 3 (3 to 5) | ||
BiPAP patients discharge to home (N=52): time from PED BiPAP stoppage to home (hours) | 17.7 (13.8 to 23.2) |
BiPAP, bilevel positive airway pressure; LOS, length of stay; PAS, Pediatric Asthma Severity; PED, paediatric emergency department; PICU, paediatric intensive care unit.