Presentation and fistula architecture stratified by fistula complexity
| All Subjects n = 25 | Single-Hole Fistulas n = 9 | Multi-Hole Fistulas n = 16 | P Value | |
|---|---|---|---|---|
| Baseline clinical characteristics | ||||
| Mean age ± SD | 4.2 ± 5.3 y | 8 ± 4.5 y | 2.1 ± 4.6 y | .0065 |
| Median age (range) | 1.2 y (1 day to 16 y) | 7 y (3–14 y) | 45 days (1 day to 16 y) | |
| Male | 56% | 56% | 56% | 1.0 |
| CHF | 32% | 0% | 44% | .027 |
| Seizures | 32% | 44% | 25% | .39 |
| Current or prior hemorrhage | 16% | 33% | 6.3% | .12 |
| Focal neurological deficit | 24% | 11% | 31% | .36 |
| Any comorbidity or risk factor | 48% | 22% | 63% | .097 |
| Baseline angioarchitecture | ||||
| >1 brain vascular lesion | 32% | 22% | 38% | .66 |
| Feeding artery aneurysm(s) | 8% | 22% | 0% | .12 |
| >1 arterial territory involved | 52% | 11% | 75% | .036 |
| Any deep venous drainage | 40% | 22% | 50% | .23 |
| >1 draining vein from any lesion | 48% | 44% | 56% | .69 |
| Massive venous sinus dilation | 23% | 0% | 31% | .12 |
| Any venous sinus dilation | 41% | 13% | 57% | .074 |
| Vein of Galen dilation | 26% | 0% | 40% | .12 |