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Updated: Jun 27, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Endovascular treatment and outcome in patients with CTP-defined extra-large infarct core stroke
Jin-Hua Ye1, Tingyu Yi2, Lan Hong3
1Cerebrovascular and Neuro-Intervention Department, Zhangzhou Municipal Hospital of Fujian Province and Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China.
Insights
Endovascular thrombectomy (EVT) improved outcomes for stroke patients with large infarct cores, reducing mortality. However, favorable outcomes were uncommon, and symptomatic intracranial hemorrhage risk increased.
Area of Science:
- Neurology
- Interventional Cardiology
- Stroke Medicine
Background:
- Limited evidence exists for endovascular thrombectomy (EVT) in large perfusion-defined ischemic stroke cores.
- Large vessel occlusion (LVO) stroke with significant infarct core requires effective treatment strategies.
Purpose of the Study:
- To evaluate the effectiveness and safety of EVT in patients with large ischemic stroke cores (≥100 mL).
- To compare functional outcomes and mortality between EVT and best medical management in this patient population.
Main Methods:
- Retrospective multicenter cohort study of 327 adult patients with anterior circulation LVO and large ischemic cores (≥100 mL).
- Patients presented within 24 hours and were treated with EVT or best medical management.
- Outcomes assessed included 90-day functional outcome (mRS 0-3), mortality, and symptomatic intracranial hemorrhage, analyzed using multivariable regression and IPTW.
Main Results:
- EVT was associated with significantly higher odds of a favorable 90-day functional outcome (aOR 4.3-5.1) and lower 90-day mortality (aOR 0.5).
- Successful reperfusion was achieved in 89.1% of EVT patients.
- EVT also increased the risk of symptomatic intracranial hemorrhage (aOR 4.4).
Conclusions:
- EVT offers improved functional outcomes and reduced mortality in patients with large ischemic stroke cores (≥100 mL).
- Despite benefits, favorable outcomes remain infrequent, and mortality is still high.
- Increased risk of symptomatic intracranial hemorrhage necessitates careful consideration and further prospective validation.
Background And Purpose:
Evidence for endovascular thrombectomy (EVT) in patients with very large perfusion-defined infarct core stroke remains limited.
Methods:
We performed a retrospective multicenter cohort study using prospectively maintained stroke registries from nine comprehensive stroke centers in China between 1 June, 2019 and 1 June, 2025. Adults with anterior circulation large-vessel occlusion involving the internal carotid artery or middle cerebral artery M1/M2 segment, presentation within 24 hours, and baseline CT perfusion (CTP)-defined ischemic core volume ≥100 mL were included. Ischemic core was defined as relative cerebral blood flow of <30%. The primary outcome was a favorable functional outcome at 90 days, defined as a modified Rankin Scale (mRS) score of 0-3. Multivariable regression and Inverse Probability of Treatment Weighting (IPTW) were used.
Results:
Among 327 patients (median age 74 years; 146 women), 203 underwent EVT and 124 received best medical management. Successful reperfusion was achieved in 181/203 EVT-treated patients (89.1%). EVT was associated with higher odds of a favorable functional outcome (19.7% vs 5.6%; adjusted OR (aOR) 4.3, 95% CI 1.6 to 11.6, P=0.004; IPTW aOR 5.1, 95% CI 2.1 to 12.3, P<0.001 lower 90-day mortality (49.3% vs 70.2%; aOR 0.5, 95% CI 0.3 to 0.8, P=0.009), and a higher risk of symptomatic intracranial hemorrhage (25.6% vs 8.1%; aOR 4.4, 95% CI 2.0 to 9.8, P<0.001).
Conclusion:
In this multicenter cohort of patients with anterior circulation large-vessel occlusion and CTP-defined ischemic core volume of ≥100 mL, EVT was associated with a better functional outcome and lower mortality, but a favorable outcome remained uncommon and mortality remained high, with an increased risk of symptomatic intracranial hemorrhage. Prospective validation is needed.
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