Table 2

Development of early new postoperative deficits (within first postoperative week)

Preoperative characteristicsEarly new postoperative deficit (%)p Value
Intracerebral haemorrhage (%):
 Absent (n=91)47.3
 Present (n=59)27.10.0025
Size of AVM:
 Small AVMs < 3 cm (n=78)28.2
 AVMs 3-6 cm (n=65)47.3
 Large AVMs > 6 cm (n=7)85.70.01
Eloquence of AVM:
 Non-eloquent (n=61)18.0
 Less eloquent (n=74)50.1
 Highly eloquent (n=15)73.30.001
Deep venous drainage:
 Superficial (n=106)34.6
 Deep (n=44)52.30.05
Spetzler-Martin grade:
 I (n=33)15.2
 II (n=48)25.3
 III (n=44)56.4
 IV (n=21)56.5
 V (n=4)100.00.001
Karnofsky score:
 10-70 (n=59)39.0
 80-100 (n=91)39.6NS