Maximum change in Paco 2 and Pao 2 in 30 minute study period (Δmax30Paco 2and Δmax30PaO2).
| Increase in amplitude | Decrease in amplitude | ||||||
|---|---|---|---|---|---|---|---|
| High Fio2 | Low Fio2 | High Fio2 | Low Fio2 | ||||
| No of patients | 10 | 13 | 10 | 14 | |||
| Δmax30Paco 2 (kPa) | −0.98 (−0.78, −1.47) | −1.13 (−0.84, −2.83) | +0.94 (+0.56, +1.28) | +1.24 (+0.57, +1.96) | |||
| Δmax30PaO 2 (kPa) | 0.0 (−0.6, +0.4) | +1.1 (+0.4, +4.7) | +0.2 (−0.2, +0.6) | −1.2 (−0.5, −2.1) | |||
Median values (ranges) are shown. Mann-Whitney U tests were used to compare high and low Fio 2 groups. Δmax30Paco 2, no statistically significant differences; Δmax30Pao 2: p < 0.001 for both increases and decreases in amplitude.