ArticleAmerican journal of translational research2025
Diffusion-weighted imaging and the Alberta Stroke Program Early CT Score (DWI-ASPECTS)-guided intra-arterial thrombectomy beyond 6 hours: feasibility, substantial efficacy, and acceptable safety.
Article in American journal of translational research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesTo assess the safety and efficacy of intra-arterial thrombectomy for patients with acute ischemic stroke due to large vessel occlusion (LVO) treated beyond the traditional 6-hour window, using diffusion-weighted imaging and the Alberta Stroke Program Early CT Score (DWI-ASPECTS) for patient selection.
methodsA retrospective study was conducted at Hebei General Hospital, involving 263 acute stroke patients treated between November 2022 and August 2024. Patients were categorized into two cohorts based on treatment timing: within 6 hours (n = 156) and beyond 6 hours (n = 107). Outcomes included the modified Rankin Scale (mRS), National Institutes of Health Stroke Scale (NIHSS), degree of vascular recanalization (modified Thrombolysis in Cerebral Infarction [mTICI] scale), coagulation parameters, and adverse event rates as safety measures.
resultsDemographics and baseline conditions were comparable across groups. The beyond-6-hour group showed prolonged time from symptom onset to intervention, with slightly higher mRS and NIHSS scores at discharge and 90 days, indicating poorer functional and neurological outcomes (P < 0.05 for both). The beyond-6-hour group had a significantly lower vascular recanalization rate (mTICI ≥ 2b: 84.11%) compared to the within-6-hour group (93.59%, P = 0.013). However, the overall safety profile was similar, with no significant differences in adverse event rates.
conclusionIntra-arterial thrombectomy beyond the standard 6-hour window was feasible, showing substantial efficacy and an acceptable safety profile when guided by DWI-ASPECTS.
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