Long-term outcome changes after mechanical thrombectomy for anterior circulation acute ischemic stroke.

Background And Purpose: Mechanical thrombectomy (MT) improves early clinical outcome in patients with acute ischemic stroke but insights on determinants of long-term outcome after MT treatment are scarce.

Methods: Data from stroke patients with anterior circulation large vessel occlusion of a prospective MT registry (01/2014-06/2017) of a large comprehensive stroke center were analyzed regarding clinical outcome between short- (3 months) and long-term (12 months) assessment reflected by a change of modified Rankin scores (∆mRS). Secondary endpoints included favorable long-term outcome (mRS 0-2).