Surgical morbidity
| Preoperative characteristics | Surgical morbidity (%) | p Value | |
|---|---|---|---|
| Intracerebral haemorrhage: | |||
| Absent (n=91) | 18.7 | ||
| Present (n=59) | 10.2 | 0.01 | |
| Size of AVM: | |||
| Small AVMs < 3 cm (n=78) | 11.5 | ||
| AVMs 3-6 cm (n=65) | 18.5 | ||
| Large AVMs > 6 cm (n=7) | 28.6 | NS | |
| Eloquence of AVM: | |||
| Non-eloquent (n=61) | 8.2 | p=0.05 Non-eloquentv eloquent, NS less v highly eloquent | |
| Less eloquent (n=74) | 20.3 | ||
| Highly eloquent (n=15) | 20.0 | ||
| Deep venous drainage: | |||
| Superficial (n=106) | 15.9 | ||
| Deep (n=44) | 15.1 | NS | |
| Spetzler-Martin grade: | |||
| I (n=33) | 9.1 | ||
| II (n=48) | 8.3 | ||
| III (n=44) | 25.0 | ||
| IV (n=21) | 23.8 | ||
| V (n=4) | 0.0 | NS | |
| Karnofsky score: | |||
| 10-70 (n=59) | 13.8 | ||
| 80-100 (n=91) | 14.3 | NS | |