Demographic, clinical characteristics and treatment outcome
| Primary isolated distal occlusion (group 1) | Secondary DMVO following MT of a proximal vessel occlusion (group 2) | Distal thrombectomy during elective AVM or aneurysm embolization (group 3) | |
| Patient characteristics | n=34 | n=71 | n=10 |
| Age, mean (SD) | 76 (12) | 74 (15) | 46 (17) |
| Female sex, n (%) | 17 (50) | 41 (57.8) | 5 (50) |
| Prior IVT, n (%) | 23 (67.6) | 27 (38.0) | NA |
| NIHSS at admission, median (range) | 7 (0–22) | 11 (0–31) | NA |
| NIHSS at 24 hours, median (range) | 6 (0–31) | 8 (0–31) | NA |
| NIHSS at discharge, median (range) | 3 (0–31) | 5 (0–23) | NA |
| Successful recanalization (eTICI 2b67-3), n (%) | 24 (70.5) | 52 (73.2) | 10 (100) |
| No of passes with Tigertriever 13, median (range) | 2 (1–4) | 1 (1–5) | 1 (1–3) |
| Duration of MT procedure (min), mean (SD) | 71 (50.1) | 104 (68.2) | NA |
| Contrast agent extravasation in CBCT immediately after thrombectomy, n (%) | 16 (47.0) | 31 (43.6) | 0 |
| Asymptomatic intracranial bleeding,* n (%) | 7 (20.6) | 12 (16.9) | 0 |
| Symptomatic intraparenchymal bleeding, n (%) | 3 (8.8) | 5 (7.0) | 0 |
| In-hospital mortality, n (%) | 4 (11.8) | 15 (21.1) | NA |
*Including subarachnoid and intra-parenchymal.
AVM, arteriovenous malformation; CBCT, cone-beam CT; DMVO, distal medium vessel occlusion; eTICI, extended Thrombolysis in Cerebral Infarction; IVT, intravenous thrombolysis; MT, mechanical thrombectomy.