Table 2.
Distribution of PS and PEEP ranges and preferred setting combinations (PEEP/PS).
| Range (cmH2O) | Site 1 (n = 561) | Site 2 (n = 94) | Site 3 (n = 54) | Site 4 (n = 42) | Site 5 (n = 89) | Site 6 (n = 47) | Site 7 (n = 30) | Site 8 (n = 14) |
|---|---|---|---|---|---|---|---|---|
| PS | ||||||||
| 0 to 4 | 0% | 0% | 0% | 2% | 7% | 98% | 39% | 100% |
| 5 | 93% | 97% | 100% | 90% | 1% | 2% | 52% | 0% |
| 6 to 10 | 5% | 1% | 0% | 7% | 92% | 0% | 9% | 0% |
| >10 | 1% | 2% | 0% | 0% | 0% | 0% | 0% | 0% |
| PEEP | ||||||||
| 0 to 4 | 0% | 1% | 0% | 0% | 94% | 85% | 9% | 7% |
| 5 | 94% | 98% | 98% | 76% | 2% | 15% | 70% | 86% |
| 6 to 10 | 6% | 1% | 2% | 24% | 3% | 0% | 22% | 7% |
| >10 | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Preferred settings | ||||||||
| PEEP/PS | 5/5 (92%) | 5/5 (96%) | 5/5 (98%) | 5/5 (69%) | 0/6 (90%) | 0/0 (85%) | 5/5 (27%) | 5/0 (86)% |
| (% incidence) | 8/5 (21%) | 5/0 (23%) |
Values expressed as % proportion of spontaneous breathing trials (SBTs) unless otherwise specified, that is, % incidence of preferred settings. PEEP: positive end expiratory pressure; PS: pressure support. N values represent the number of SBTs at each site with available data.