Table 1 Clinical data in the present study
Characteristic | Data | |
|---|---|---|
Age (years) | Mean | 33.8 ± 14.7 |
Range | 8–68 | |
Sex | Female | 55.6% (75/135) |
Male | 44.4% (60/135) | |
Presentation | Unruptured | 29.6% (40/135) |
IH | 50.4% (68/135) | |
IVH | 9.6% (13/135) | |
IH and IVH | 8.1% (11/135) | |
SAH | 2.2% (3/135) | |
Hunt-Hess grade | 0 | 29.6% (40/135) |
I | 29.6% (40/135) | |
II | 27.4% (37/135) | |
III | 13.3% (18/135) | |
BAVM size (cm) | Mean | 3.7 ± 1.7 |
Range | 0.5–8 | |
Spetzler‒Martin grade | I | 20.7% (28/135) |
II | 33.3% (45/135) | |
III | 37% (50/135) | |
IV | 8.1% (11/135) | |
V | 0.7% (1/135) | |
BAVM type | I | 11.1% (15/135) |
II | 11.9% (16/135) | |
IIIa | 40% (54/135) | |
IIIb | 37% (50/135) | |
Associated aneurysm | Prenidal | 5.2% (7/135) |
Intranidal | 9.6% (13/135) | |
Draining vein type | Single superficial vein | 47.4% (64/135) |
Multiple superficial veins | 40% (54/135) | |
Deep vein | 8.1% (11/135) | |
Superficial and deep veins | 4.4% (6/135) | |
Primary draining vein morphology | Normal | 32.6% (44/135) |
Dilated | 21.5% (29/135) | |
Varicose | 45.9% (62/135) | |
EVT degree of the nidus |  < 1/3 | 16.3% (22/135) |
1/3–2/3 | 47.4% (64/135) | |
 > 2/3 | 36.3% (49/135) | |
Hospital stay after EVT (days) | Mean | 6.7 ± 2.6 |
Range | 2–13 | |
Glasgow Outcome Scale score at discharge | 5 | 76.3% (103/135) |
4 | 20.7% (28/135) | |
3 | 3.0% (4/135) | |