Table 3. Biological data at admission.
| Case 1 | Case 2 | Case 3 | Case 4 | Case 5 | Case 6 | Mean ± SD | |
| Arterial blood gases | |||||||
| Arterial pH | 7.04 | 6.81 | 6.71 | 7.09 | 7.15 | 6.72 | 6.92±0.20 |
| Arterial lactate (mmol/l) | 16.2 | 19.1 | 15.6 | 9.8 | 6.6 | 19.0 | 14.4±5.1 |
| Bicarbonate (mmol/l) | 5 | 2 | 1 | 7 | 15 | 1 | 5±5 |
| Anion gap (mmol/l) | 51 | 42 | 51 | 52 | 36 | 54 | 48±7 |
| PaCO2 (mmHg) | 16.5 | 15.0 | 24.8 | 23.3 | 43.5 | 9.0 | 21.8±12.0 |
| PaO2/FiO2 (mmHg) | 250 | 238 | 194 | 181 | 233 | 313 | 235±47 |
| Standard biochemistry | |||||||
| Sodium (mmol/l) | 140 | 135 | 131 | 139 | 136 | 133 | 136±3 |
| Potassium (mmol/l) | 5.0 | 6.2 | 7.5 | 6.7 | 7.6 | 7.2 | 6.7±1.0 |
| Glycemia (mmol/l) | 12.5 | 2.2 | 9.3 | 13.0 | 8.7 | 6.3 | 8.7±4.0 |
| Urea (mmol/l) | 26 | 26 | 39 | 24 | 21 | 31 | 28±7 |
| Creatinine (µmol/l) | 670 | 416 | 841 | 585 | 372 | 723 | 601±181 |
| Aminotransferase ALAT (IU/l) | 12 | 29 | 128 | 40 | 13 | 15 | 39±45 |
| Creatine kinase (IU/l) | 150 | 63 | 554 | 124 | 43 | 484 | 236±224 |
| Troponin I (ng/ml) | 0.18 | <0.1 | 1.33 | <0.1 | <0.1 | 1.14 | 0.9±0.6 |
| Hematology | |||||||
| Hemoglobin (g/l) | 81 | 116 | 93 | 100 | 128 | 86 | 101±18 |
| Platelets (109/l) | 160 | 161 | 350 | 251 | 363 | 401 | 281±106 |
| White blood cell (109/l) | 18 | 25 | 27 | 17 | 13 | 39 | 23±9 |
| Prothrombin index (%) | 50 | 48 | 24 | 60 | 41 | 28 | 42±14 |
| Metformin concentration | |||||||
| Plasma (mg/l), N<1 mg/l | 80.0 | 125 | 74.4 | 36.4 | 54.9 | 61.9 | 72.1±30.1 |
| Erythrocyte (mg/l), N<0.81 mg/l | 25.8 | 26.8 | 22.5 | 14.7 | 51.8 | 20.6 | 27.0±12.9 |
N, laboratory level limit; PaCO2, partial carbon dioxide pressure in arterial blood; PaO2, partial oxygen pressure in arterial blood; FiO2, inspiratory fraction of oxygen.