Describe and interpret this arterial blood gas:
History: A 92-year-old woman with a history of ischaemic heart disease presents with respiratory distress and an altered conscious state. She is currently on BPAP.
| pH 7.04 | Na 139 mmol/L |
| pCO2 92 mmHg | K 5.7 mmol/L |
| pO2 128 mmHg (FiO2 0.6) | Cl 109 mmol/L |
| HCO3 24 mmol/L | Glucose 13.8 mmol/L |
| Creatinine 243 μmol/L | Lactate 1.4 mmol/L |
| Hb 105 g/dL |