Abstract
Intra-arterial thrombectomy (IAT) has been increasingly applied in the treatment of acute ischemic stroke (AIS) due to large-vessel occlusion, and many related studies have been published. However, limited studies on the prognosis of failed-IAT patients are available. In this study, factors that can predict a good prognosis in patients with failed IAT were studied. Among patients who visited our hospital between January 2016 and September 2022 and underwent IAT, we retrospectively analyzed those with failed IAT. A univariate analysis was performed on the radiological features, medical histories, and other patient characteristics expected to affect the prognosis, and a multivariate analysis was performed on some of these factors. In univariate analysis, a good collateral channel on susceptibility-weighted imaging (SWI), modified thrombolysis in cerebral infarction (mTICI) 2A recanalization, and the pre-procedural modified Rankin scale (mRS) were statistically significant. In the multivariate analysis, good collateral channels on SWI and computed tomography angiography (CTA) and mTICI 2A recanalization were statistically significant. Factors that can predict a good prognosis in patients with failed IAT include good leptomeningeal collateral channels evaluated by CTA and SWI and mTICI 2A recanalization.
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