Table 2.
Oxygenation data, ventilator settings and adjustments for all ABG tests
| PaO2 category (kPa) | n (%) | PaO2 (kPa, mean ± SD) | FiO2 | PEEP (cmH2O) | Time until next ABG test (min) | Delta FiO2 a | Delta PEEP (cmH2O)a | Delta PaO2 (kPa) mean ± SD)a | No decrease in FiO2 or PEEP, n (%) |
|---|---|---|---|---|---|---|---|---|---|
| <8 | 4,544 (3.6) | 7.3 ± 0.7 | 0.5 (0.4–0.61) | 10 (7–12) | 95 (56–159) | 0 (0–0.1) | 0 (0–2) | 2.8 ± 4.6 | 3,749 (83) |
| 8.01–10 | 21,335 (16.8) | 9.2 ± 0.6 | 0.45 (0.4–0.51) | 9 (5–12) | 143 (87–228) | 0 (0–0) | 0 (0–0) | 1.5 ± 3.2 | 17,071 (80) |
| 10.01–13 | 45,545 (35.9) | 11.5 ± 0.8 | 0.4 (0.4– 0.5) | 8 (5–10) | 174 (108–264) | 0 (0–0) | 0 (0–0) | 0.6 ± 3.1 | 32,973 (72) |
| 13.01–16 | 27,132 (21.4) | 14.4 ± 0.9 | 0.4 (0.4–0.42) | 5 (5–10) | 181 (111–276) | 0 (0–0) | 0 (0–0) | −0.4 ± 3.4 | 18,297 (67) |
| >16.01 | 28,222 (22.3) | 20.7 ± 6.0 | 0.4 (0.4–0.45) | 5 (5–10) | 166 (99–261) | 0 (0–0) | 0 (0–0) | −2.6 ± 6.4 | 17,527 (62) |
Data are presented as medians (interquartile range) unless otherwise stated
a Delta difference between successive ABG tests