Table 2.
Comparison of arterial damage in the device and control samples.
| Solitaire 4 (n = 4) |
Solitaire 6 (n = 4) |
Catch (n = 4) |
Merci (n = 4) |
Penumbra (n = 4) |
Wall- Contact† (n = 16) |
All Device (n = 20) |
Control (n = 20) |
P Value* | |
|---|---|---|---|---|---|---|---|---|---|
| Endothelial denudation |
85.8 ± 22.9 | 76.2 ± 12.8 | 76.1 ± 21.2 | 85.9 ± 12.1 | 40.1 ± 47.6 | 81.0 ± 16.8 | 72.8 ± 29.4 | 0.9 ± 1.9 | 0.0001 |
| Mural thrombus |
14.1 ± 28.1 | 0 | 9.4 ± 15.6 | 3.1 ± 6.2 | 0 | 6.6 ± 15.7 | 5.3 ± 14.2 | 0 | 0.05 |
| Intimal layer edema |
43.8 ± 51.5 | 81.3 ± 65.7 | 43.8 ± 37.5 | 66.5 ± 47.1 | 100 ± 89.1 | 58.8 ± 48.9 | 67 ± 56.2 | 44.6 ± 43.6 | 0.25 |
| IEL fractured† |
12.5 ± 14.4 | 25 ± 35.4 | 18.8 ± 23.9 | 50 ± 100 | 12.5 ± 14.4 | 26.6 ± 51.2 | 23.7 ± 46.2 | 20.6 ± 33.3 | 0.78 |
| Medial layer edema |
25 ± 0 | 37.5 ± 43.3 | 81.3 ± 23.9 | 41.5 ± 35.2 | 75 ± 35.4 | 46.3 ± 34.8 | 52 ± 35.9 | 18.1 ± 27.8 | .004 |
| EEL fractured |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | NA |
| Adventitia edema |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | NA |
| Note: Data are the means (%) ± standard deviation.(%) IEL = Internal elastic lamina; EEL = External elastic lamina; NA = Non applicable; † Wall-contact devices including Merci retriever, Catch thromboembolectomy system and Solitaire FR revascularization devices 4 and 6 mm; * Mann-Whitney Test comparing all device samples combined with control samples. | |||||||||