Patients and characterstics
| Range (y) | Mean (SD) | Median (y) | ||
|---|---|---|---|---|
| Age | 5-72 | 34.5 (14.7) | 32.5 | |
| Number | Percentage | |||
| Sex: | ||||
| Female | 75 | 50.0 | ||
| Male | 75 | 50.0 | ||
| Size of AVM: | ||||
| < 3 cm | 78 | 52.0 | ||
| 3-6 cm | 65 | 43.3 | ||
| > 6 cm | 7 | 4.7 | ||
| Eloquence of AVM: | ||||
| No | 61 | 40.7 | ||
| Yes | 89 | 59.3 | ||
| Highly eloquent | 15 | 10.0 | ||
| Type of venous drainage: | ||||
| Superficial | 106 | 70.7 | ||
| Deep | 44 | 29.3 | ||
| Spetzler-Martin grade: | ||||
| I | 33 | 22.0 | ||
| II | 48 | 32.0 | ||
| III | 44 | 29.3 | ||
| IV | 21 | 14.0 | ||
| V | 4 | 2.7 | ||
| Intracerebral haemorrhage: | ||||
| No | 91 | 60.7 | ||
| Yes | 59 | 39.3 | ||
| Surgical morbidity: | ||||
| No | 127 | 84.7 | ||
| Yes | 23 | 15.3 | ||
| Early neurological worsening during hospital stay: | ||||
| No | 91 | 60.7 | ||
| Yes | 59 | 39.3 | ||
| Permanent (new) deficit within first 6 months: | ||||
| No | 129 | 86.0 | ||
| Non-significant | 10 | 6.7 | ||
| Significant | 11 | 7.3 | ||
| Mortality within first 6 months | 1 | 0.7 | ||
| Karnofsky pre-op/follow up at 6 months (FU6): | Pre-op (n) | FU 6 (n) | Pre-op (%) | FU 6 (%) |
| 10 | 4 | 0 | 2.7 | 0.0 |
| 20 | 8 | 1 | 5.3 | 0.7 |
| 30 | 16 | 3 | 10.7 | 2.0 |
| 40 | 9 | 2 | 6.0 | 1.3 |
| 50 | 4 | 5 | 2.7 | 3.4 |
| 60 | 8 | 4 | 5.3 | 2.7 |
| 70 | 10 | 20 | 6.7 | 13.4 |
| 80 | 10 | 14 | 6.7 | 9.4 |
| 90 | 39 | 42 | 26.0 | 28.2 |
| 100 | 42 | 58 | 28.0 | 38.9 |