Table 2.
Patient characteristics
| Category | N | Male/Female | Age (yr) | Venous lactate | CSF lactate | MRS lactate | MRS L/Cr |
|---|---|---|---|---|---|---|---|
| (%) | (mean) | (meana) | (meana) | (mean; a.u.) | (mean) | ||
| Unlikely | 44 | 68/32 | 4.6 (±4.1) | 1.5 (±0.9) | 1.5 (±0.3) | 8.2 (±2.1) | 0.17 (±0.04) |
| Possible | 17 | 47/53 | 4.0 (±3.4) | 2.1 (±1.5) | 1.6 (±0.3) | 8.9 (±3.6) | 0.2 (±0.07) |
| Probable | 10 | 60/40 | 2.3 (±1.6) | 2.5 (±2.9) | 2.3 (±2.4) | 10.6 (±10.0) | 0.23 (±0.08) |
| Definite | 17 | 59/41 | 3.3 (±3.7) | 3.7 (±3.0) | 2.3 (±2.1) | 11.2 (±5.5) | 0.28 (±0.2) |
N, number; yr, years; CSF, cerebral spinal fluid; MRS, magnetic resonance spectroscopy; L/Cr, lactate/creatine ratio; a.u., arbitrary units; ±, ± standard deviation of the mean; aValues in mmol/l