Permanent neurological deficits (major plus minor deficits)
| Preoperative characteristics | Permanent neurological deficits (major plus minor) (%) | p Value | |
|---|---|---|---|
| Intracerebral haemorrhage: | |||
| Absent (n=91) | 15.4 | ||
| Present (n=59) | 11.9 | NS | |
| Size of AVM: | |||
| Small AVMs < 3 cm (n=78) | 5.1 | ||
| AVMs 3-6 cm (n=65) | 21.5 | ||
| Large AVMs > 6 cm (n=7) | 42.9 | 0.01 | |
| Eloquence of AVM: | |||
| Non-eloquent (n=61) | 3.3 | ||
| Less eloquent (n=74) | 17.6 | ||
| Highly eloquent (n=15) | 40.0 | 0.01 | |
| Deep venous drainage: | |||
| Superficial (n=106) | 29.5 | ||
| Deep (n=44) | 7.5 | 0.01 | |
| Spetzler-Martin grade (minor (major)): | |||
| I (n=33) | 0.0 (3.0) | ||
| II (n=48) | 0.0 (0.0) | ||
| III (n=44) | 15.9 (6.8) | ||
| IV (n=21) | 9.5 (28.6) | ||
| V (n=4) | 25.0 (25.0) | 0.05 | |
| Karnofsky score: | |||
| 10-70 (n=59) | 13.8 | ||
| 80-100 (n=91) | 14.3 | NS | |