Hemorrhagic complications
| n-BCA (n = 54) | PVA (n = 52) | |
|---|---|---|
| Total hemorrhagic complications | 7(13.0%) | 15(28.9%) |
| Vessel perforation, SAH* using 3- or 1.9-French OTW catheter | 1(1.9%) | 3(5.8%) |
| Vessel perforation, SAH* using flow-guided catheter only | 0 | 1(1.9%) |
| Postembolization, presurgical intracerebral hemorrhage | 4(7.4%) | 3(5.8%) |
| Postoperative hemorrhage | 2(3.7%)** | 8(15.4%)** |
| AVM volume cm3 mean (range) | 21.8(10.4–32.4) | 20.2(6.3–105.3) |
| Deep venous drainage (n) | 2 | 6 |
| Coils, mean, range | 12, 0–24 | 17.4, 0–50 |
Note.—n-BCA indicates n-butyl cyanoacrylate; PVA, polyvinyl alcohol; SAH, subarachnoid hemorrhage; AVM, arteriovenous malformation.
* Subarachnoid hemorrhage identified on early postembolization CT scan; not identified at fluoroscopy.
** P < .05 in intent-to-treat analysis.