Procedure outcomes by lesion location*
| Procedures | |||||
|---|---|---|---|---|---|
| Overall (n = 84) | Basilar (n = 12) | Vertebral (Non ostial) (n = 28) | ICA (n = 32) | MCA (n = 10) | |
| Outcome | |||||
| Treatment success (%)† | 76 (90.5) | 12 (100) | 25 (89.3) | 30 (93.8) | 9 (90.0) |
| Periprocedural complications during initial treatment (not including death) (%) | 7 (8.3) | 0 (0) | 3 (10.7) | 2 (6.3) | 1 (10.0) |
| Periprocedural deaths (%))‡ | 1 (1.2) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Residual >50% (%) | 11 (13.1) | 1 (8.3) | 6 (21.4) | 3 (9.4) | 1 (10.0) |
| Time to restenosis, mo mean (range) | 4.59 (1–16) | 6.25 (1–16) | 4.50 (1.5–16) | 2.88 (2–4) | 3.5 (3–4) |
| Restenosis (%) | 23 (27.4) | 6 (50.0) | 11 (39.3) | 4 (12.5) | 2 (20.0) |
| Restenosis with symptoms (%) | 5 (6.0) | 2 (16.7) | 2 (7.1) | 1 (3.1) | 0 (0) |
| Retreatment for restenosis (with or without symptoms) | 13 (15.5) | 2 (16.7) | 7 (25.0) | 2 (6.3) | 2 (20.0) |
| Retreatment success†§ | 13/13 (100) | 2/2 (100) | 7/7 (100) | 2/2 (100) | 2/2 (100) |
Note:—ICA indicates internal carotid artery; MCA, middle cerebral artery.
* Vertebrobasilar junction is included with vertebral artery; anterior cerebral artery and posterior cerebral artery data are included in the overall column, but not in the breakdown by lesion location. The posterior cerebral artery case resulted in a periprocedural death and the anterior cerebral artery case resulted in a periprocedural complication (wire perforation).
† Reduction of stenosis by at least 20% and lack of periprocedural complications.
‡ The death was in the PCA case and is not included in the breakdown by location.
§ Based on the 13 repeat procedures.