Anatomic features versus perioperative ischemic events
| Unfavorable feature | Events with feature absent | Events with feature present | p Value |
|---|---|---|---|
| Arch of aorta—acute angle turn from arch into common carotid artery | 1/145 (0.7) | 6/76 (7.9) | 0.0073 |
| Common carotid artery—2 or more ≤90° turns | 5/137 (3.7) | 2/84 (2.4) | 0.7117 |
| Lesion—ulceration or pseudo-occlusion | 6/137 (4.4) | 1/84 (1.2) | 0.2568 |
| Internal carotid artery—2 or more ≤90° turns or loop | 5/194 (2.6) | 2/27 (7.4) | 0.2053 |
| Left laterality | 2/115 (1.7) (right-sided lesions) | 5/106 (4.7) (left-sided lesions) | 0.2643 |
Values are n (%).