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?:abstract
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Direct mechanical thrombectomy (DMT) was confirmed non-inferior to bridge mechanical thrombectomy (BMT, MT preceded by intravenous alteplase within 4.5 h after symptom onset) for acute ischemic stroke with large vessel occlusions (AIS-LVO) in mothership patients. However, the noninferiority of DMT in the general population (including drip and ship mode) is controversial, and the impact of thrombolysis on retrieval attempts remains uncertain. This was a post-hoc analysis of a multi-center, prospective enrolled study. Patients were divided into the BMT group and the DMT group. Baseline characteristics and clinical outcomes were compared by using univariate analysis, multivariable analysis, and propensity score matching analysis, respectively. Of all 245 patients enrolled in this study, 79 (32.2%) patients underwent BMT. In the multivariable analysis, the ratio of excellent prognosis (defined as modified Rankin Scale [mRS] score 0-1 at 90 days) was significantly higher in the BMT group compared with the DMT group (odds ratio, 2.731; 95% confidence interval, 1.238-6.023; P = 0.013). The ratio of good prognosis (mRS score 0-2 at 90 days), successful recanalization rate [modified Thrombolysis In Cerebral Ischemia (mTICI) score 2b-3] and mortality rate were similar between the two groups. The excellent prognosis rate was significantly higher in the BMT group after propensity score matching (P = 0.023). BMT was associated with a higher ratio of excellent prognosis (mRS 0-1) and a similar successful recanalization rate without increasing peri-operation complications compared with DMT in AIS-LVO patients. It is prudent to continue BMT until further data is available.
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