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PCO2: partial pressure of carbon dioxide, PO2: partial pressure of oxygen, HCO3: bicarbonate.
| Arterial blood gas analysis (ABG) | Day 1 | Day 2 | Day 4 | On discharge |
| PH | 7.324 | 7.34 | 7.404 | 7.45 |
| PCO2 (mmHg) | 9.9 | 15.7 | 16.8 | 22 |
| PO2 (mmHg) | 49.5 | 55 | 55 | 85 |
| HCO3 (mmol/L) | 5.2 | 8.6 | 10.6 | 19 |
| Lactate (mmol/L) | 10.9 | 10.2 | 8.5 | 2.4 |
| Anion gap | 32 | 28 | 16 |
