Predictors of Good Outcomes of Thrombectomy In Large Infarct Core Stroke

Study Overview
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Brief Summary
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Identify the factors associated with a favorable clinical outcome in participants with acute ischemic stroke and large core infarcts within 24 hours of onset who are treated with endovascular intervention.

Detailed Description
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In 2022 and early 2023, three randomized controlled trials-RESCUE-JAPAN LIMIT, SELECT 2, and ANGEL ASPECT-were published in the New England Journal of Medicine. These trials demonstrated the effectiveness and safety of endovascular intervention using clot retrieval devices in participants with acute ischemic stroke and large core infarcts. However, the rate of participants achieving a good recovery remains low, while the mortality and disability rates are very high. Moreover, in Vietnam, the acute stroke treatment process has not been optimized, and the facilities and equipment for monitoring neurointensive care are not fully equipped. As a result, endovascular intervention using clot retrieval devices in participants with large core infarcts has not been widely implemented in the investigator's country, and the effectiveness and safety of this treatment method have not been clearly evaluated. Addressing this issue is crucial for improving the quality of life and reducing the mortality and disability rates caused by stroke in this participant group. This study aims to provide new insights into the use of endovascular intervention for treating acute ischemic stroke with a large core infarct volume, thereby supporting clinical decision-making and improving treatment outcomes for participants with acute ischemic stroke and large core infarcts.

Official Title
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Predictors of Good Outcomes of Thrombectomy In Stroke Patients Within 24 Hours From Symptom Onset With Large Infarct Core

Conditions
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Acute Ischemic Stroke

Intervention / Treatment
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* Procedure: Endovascular treatment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 18-year-old Patients presenting with acute ischaemic stroke within 24 hours of stroke onset Received mechanical thrombectomy within 24 hours of stroke onset Imaging criteria include: Large vessel occlusion on CT Angiography or MR Angiography (MRA) including tandem occlusion of the internal carotid artery and middle cerebral artery or internal carotid artery. Core infarct criteria: ASPECTS ≤5 on non-contrast CT or diffusion-weighted imaging (DWI). ASPECTS score >5 and core infarct volume of 50-150 ml on CT perfusion (CTP) or reduced cerebral blood flow (rCBF) <30% on CTP or apparent diffusion coefficient (ADC) <620 × 10-6 mm2/s on DWI. Exclusion Criteria: Patients presenting with acute ischaemic stroke >24 hours of stroke onset Intracranial hemorrhage identified by CT or MRI Pre-stroke modified Rankin Score (mRS) score of >2 (indicating previous disability) Any terminal illness such that the patient has a life expectancy of less than 1 year. Patients with active cancer and undergoing treatment for cancer are excluded, Pregnancy

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Good outcome<br>mRS of 0-3; mRS of 0-2 | Procedure: Endovascular treatment<br>* This procedure is instrumental in restoring cerebral blood flow by addressing the clot-induced obstruction within brain-supplying blood vessels.<br>* Other names: Mechanical thrombectomy;|
| Unfavorable outcomes<br>mRS of 4-6 | Procedure: Endovascular treatment<br>* This procedure is instrumental in restoring cerebral blood flow by addressing the clot-induced obstruction within brain-supplying blood vessels.<br>* Other names: Mechanical thrombectomy;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The Modified Rankin Scale (mRS) of 0-3 | The rate of independent ambulation (mRS 0-3). The scale runs from 0-6, running from perfect health without symptoms to death. | 90 (± 14 days) after procedure | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| mRS of 0-2 | The rate of functional independence (mRS 0-2) | 90 (± 14 days) after procedure | 
| mRS of 0-5 | The survival rate | 90 (± 14 days) after procedure | 
| Symptomatic intracerebral hemorrhage (sICH) | sICH means any hemorrhage with neurological deterioration, as indicated by an NIHSS score that was higher by ≥4 points than the value at baseline or the lowest value in the first 72 hours or any hemorrhage leading to death. | 72 hours | 
| Early neurological deterioration | Clinical worsening that was higher by ≥4 points than the value at baseline during the first 72 h after ischaemic stroke. | 72 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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large core, Low ASPECTS, Endovascular treatment