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Background The optimal treatment for acute stroke attributable to isolated cervical internal carotid artery occlusion without intracranial target is unclear. The purpose of our study was to examine whether endovascular therapy for acute stroke attributable to isolated cervical internal carotid artery occlusion was associated with improved clinical outcome. Methods We identified patients from 2 comprehensive stroke centers during the period January 2009 to December 2019, with acute ischemic stroke attributable to cervical internal carotid artery occlusion without an intracranial occlusion. We categorized patients into 2 groups: endovascular therapy and medical therapy. Clinical outcome (modified Rankin scale score at 90 days poststroke) was compared between the 2 groups. Results Seventy‐three patients were included (26 women [36%]; median age, 69 [interquartile range (IQR), 60–80] years; median National Institutes of Health Stroke Scale score, 11 [IQR, 5–16]). Of these, 40 patients received endovascular therapy, and 33 patients were managed with medical therapy alone. The endovascular therapy group had a significantly higher median National Institutes of Health Stroke Scale score on presentation (13 versus 3;P &lt;0.0001). Rates of thrombolysis were also significantly higher in the endovascular group (50% versus 15%;P =0.002). There were no other significant differences in baseline characteristics between the 2 groups. Good clinical outcome (modified Rankin scale score 0–2 at 90 days or no decline in modified Rankin scale score from baseline at 90 days) was seen in 73% of the endovascular therapy group compared with the 61% of the medical management group (odds ratio [OR] for good outcome, 1.7 [95% CI, 0.64–4.6]), despite the large discrepancy in baseline stroke severity. When restricted to patients with presenting National Institutes of Health Stroke Scale score ≥6, endovascular therapy was associated with higher rates of good clinical outcome (66% versus 18%; OR for good outcome, 9.0 [95% CI, 1.65–49.0]).Conclusions Endovascular therapy in isolated cervical internal carotid artery occlusion may be associated with improved outcome when compared with medical therapy. However, the significant differences in baseline characteristics between the groups limit interpretation. Randomized controlled trials are necessary.

stroke: vascular and interventional neurology

Endovascular Therapy Versus Medical Therapy for Acute Stroke Attributable to Isolated Cervical Internal Carotid Artery Occlusion Without Intracranial Large Vessel Occlusion