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Between dose comparisons of mean AUC for PaCO2, PaO2 and heart rate over 2 h
| PaCO2 AUC | |
| Difference (high vs. low) | 0.03 kPa h−1 (95% CI 0.02, 0.04), P = 0.57 |
| PaO2 AUC | |
| Difference (high vs low) | 0.1 kPa h−1 (95% CI 0, 0.2), P = 0.04 |
| Heart rate AUC | |
| Difference (high vs. low) | 1.1 beats min−1 h (95% CI 0.4, 1.8), P = 0.005 |
