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ABG: arterial blood gas
| ABG analysis | Pre-operative physiotherapy: day 1 | Pre-operative physiotherapy: last day | Postoperative physiotherapy: day 1 | Post-operative physiotherapy: day of discharge |
| PH | 6.556 | 7.224 | 6.891 | 7.321 |
| PaCo2 (mmHg) | 49.3 | 38.2 | 51.8 | 37.2 |
| PaO2 (mmHg) | 120.2 | 75 | 115.1 | 73.8 |
| HCO3ˉ(mmol/L) | 24.6 | 22 | 27.2 | 24 |
| SaO2 (%) | 83 | 92 | 90 | 95 |
