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EndovascularTherapy Versus Standard Medical Terapy for Intracranial Large Vessel Occlusion in 24 Hours to 30 Days

21 de setembro de 2026 atualizado por: Xuan Sun

EndovascularTherapy Versus Standard Medical Terapy for Intracranial Large Vessel Occlusion in 24 Hours to 30 Days: A Prospective, Multicenter, Real-world Cohort Trial

This study is a prospective, multicenter, observational cohort study using a real-world study design. The aim of this study is to compare functional and safety outcomes of intravascular recanalization therapy (with COSIS distal stent protection technology strategy as the core) combined with standard drug therapy in improving functional outcomes in patients with intracranial large vessel occlusion in the ultra late window (24 hours-30 days) compared with standard drug therapy alone.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

Patients with ischemic stroke whose onset or last known well (LKW) ranged from 24 hours to 30 days, who were confirmed by imaging to have intracranial large vessel occlusion and may still have brain tissue that can be saved were included. The study did not interfere with the choice of treatment options. Patients received intravascular therapy or standard drug treatment, which was determined by clinicians according to the condition, imaging characteristics and the joint decision of doctors and patients. According to the actual treatment of patients, the intravascular treatment cohort and the standard drug treatment cohort were formed, in which the intravascular treatment was centered on the COSIS distal stent protection strategy. The primary outcome is proportion of patients with functional independence defined as mRS score of 0-2 at 90 days after enrollment.

Tipo de estudo

Observacional

Inscrição (Estimado)

150

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

  • Nome: Xuan Sun, MD
  • Número de telefone: 13810926284
  • E-mail: sxuan@yeah.net

Locais de estudo

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100070
        • Beijing Tiantan Hospitall, Capital Medical University
        • Contato:
          • Xuan Sun, MD
          • Número de telefone: +8613810926284
          • E-mail: sxuan@yeah.net

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Método de amostragem

Amostra Não Probabilística

População do estudo

All research centers continuously screened eligible patients according to unified standards. The study did not interfere with the choice of treatment options. Whether the patients received intravascular therapy was determined by clinicians according to the condition, imaging characteristics, treatment risk and the joint decision of doctors and patients.

This is a prospective multicenter observational registry-based cohort study. Endovascular treatment is a routine clinical interventional procedure. The decision whether to perform endovascular treatment is made by treating clinicians, not assigned by study investigators. Investigators only collect real-world clinical data and follow-up outcomes of enrolled participants.

Descrição

Inclusion Criteria:

  1. Age≥18 years
  2. The clinical diagnosis was ischemic stroke, and imaging confirmed the presence of intracranial large vessel occlusion
  3. The time from LKW or the time of finding symptoms is 24 hours to 72 hours; or more than 72 hours but not more than 30 days, and there are neurological deterioration or fluctuation
  4. Imaging findings suggest that there may still be salvageable brain tissue, which meets any of the following conditions: perfusion imaging examination shows that the ischemic core volume < 70 ml and the mismatch ratio > 1.2; CTA or DSA showed moderate or good collateral circulation; MRI-DWI showed a significant mismatch between lesion size and clinical symptoms
  5. The modified Rankin Scale score (mRS) before onset was 0-1
  6. The subjects themselves or their legal representatives voluntarily participated in the study and signed written informed consent

Exclusion Criteria:

  1. Large area cerebral infarction or imaging showed obvious space occupying effect, such as ASPECTS<6 points,or brainstem infarction area exceeded 1/3 of the corresponding anatomical area
  2. Isolated extracranial carotid or vertebral artery occlusion
  3. Intracranial tumors, arteriovenous malformations or other serious intracranial diseases that may significantly affect the evaluation of the outcome of the study
  4. Intracranial hemorrhage occurred in the past 3 months
  5. There is a risk of severe coagulation dysfunction, active bleeding or other high bleeding that cannot be corrected
  6. Severe liver and kidney function damage, which may affect treatment or follow-up
  7. Pregnant or lactating women
  8. The estimated survival time is less than 1 year
  9. Unable to complete 90-day clinical follow-up or main outcome assessment
  10. Participating in other interventional clinical trials that may affect the treatment or outcome evaluation of this study
  11. Other circumstances that the researcher believes are not suitable for participating in this study

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Modelos de observação: COHORT
  • Perspectivas de Tempo: PROSPECTIVE

Coortes e Intervenções

Grupo / Coorte
Intervenção / Tratamento
Endovascular Treatment Cohort

Intravascular therapy combined with standard drug therapy, in which the core of intravascular therapy is the cosis distal stent protection strategy.
Procedimento: Endovascular Treatment Group

The recanalization strategy with COSIS distal stent protection technology as the core was used in endovascular treatment.In addition to thrombus removal, the device mainly uses its distal closed basket structure and stent guide wire to form protection and anchor fulcrum at the distal end of occlusion, so as to assist in balloon dilatation, thrombus removal or stent implantation of complex occlusive lesions, and reduce thrombus escape.
Standard Medical Therapy Cohort

Standard drug therapy alone.It mainly includes antiplatelet therapy or anticoagulation therapy, lipid-lowering therapy, blood pressure and blood glucose management, etc.
Outro: Standard medication

Standard drug therapy is implemented in accordance with the current guidelines for the diagnosis and treatment of cerebrovascular diseases and the routine of each center, mainly including antiplatelet or anticoagulation therapy, lipid-lowering therapy, blood pressure and blood glucose management, etc.

The drug name, dose, route of administration, frequency of administration and course of treatment are determined by the clinician according to the patient's condition. The study only recorded the actual drug treatment and important adjustments.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
The proportion of patients with functional independence defined as mRS score of 0 - 2 at 90 days after enrollment
Prazo: 90 days after enrollment

The modified Rankin scale (mRS) ranged from 0 to 6, with a score of 0 indicating no disability, 1 no clinically significant disability, 2 slight disability, 3 moderate disability but remaining able to walk unassisted, 4 moderately severe disability,5 severe disability, and 6 death.
90 days after enrollment

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
The overall distribution of mRS at 90 days after enrollment
Prazo: 90 days after enrollment

The modified Rankin scale (mRS) ranged from 0 to 6, with a score of 0 indicating no disability, 1 no clinically significant disability, 2 slight disability, 3 moderate disability but remaining able to walk unassisted, 4 moderately severe disability,5 severe disability, and 6 death.
90 days after enrollment
National Institutes of Health Stroke Scale (NIHSS) score 24 hours after treatment
Prazo: 24 hours after treatment

The National Institute of Health Stroke Scale (NIHSS) ranged from 0 to 42, with higher scores indicating greater neurologic deficits.
24 hours after treatment
National Institutes of Health Stroke Scale (NIHSS) score at discharge
Prazo: At discharge

The National Institute of Health Stroke Scale (NIHSS) ranged from 0 to 42, with higher scores indicating greater neurologic deficits.
At discharge
National Institutes of Health Stroke Scale (NIHSS) score 30 days after enrollment
Prazo: 30 days after enrollment

The National Institute of Health Stroke Scale (NIHSS) ranged from 0 to 42, with higher scores indicating greater neurologic deficits.
30 days after enrollment
National Institutes of Health Stroke Scale (NIHSS) score 90 days after enrollment
Prazo: 90 days after enrollment

The National Institute of Health Stroke Scale (NIHSS) ranged from 0 to 42, with higher scores indicating greater neurologic deficits.
90 days after enrollment
The recurrence rate of stroke within 90 days after enrollment
Prazo: 90 days after enrollment

The recurrence rate of stroke within 90 days after enrollment.
90 days after enrollment
Transient ischemic attack within 90 days after enrollment
Prazo: 90 days after enrollment

Transient ischemic attack within 90 days after enrollment.
90 days after enrollment
All-cause mortality within 90 days after enrollment
Prazo: 90 days after enrollment

All-cause mortality within 90 days after enrollment.
90 days after enrollment
Revascularization of target vessels within 90 days after enrollment
Prazo: 90 days after enrollment

Revascularization of target vessels within 90 days after enrollment.
90 days after enrollment
The technical success rate of the intravascular treatment cohort，successful recanalization of the target vessel with residual stenosis <50% and final mTICI grade≥2b
Prazo: At the end of the procedure

The technical success rate of the intravascular treatment cohort，successful recanalization of the target vessel with residual stenosis <50% and final mTICI grade≥2b.
At the end of the procedure
Degree of recanalization in the intravascular treatment cohort
Prazo: At the end of the procedure

Degree of recanalization in the intravascular treatment cohort.The mTICI scale evaluates angiographic recanalization after endovascular therapy for acute ischemic stroke. Grades range from 0 (no perfusion) to 3 (complete recanalization). mTICI grade≥2b is defined as successful recanalization.
At the end of the procedure
Operation time of intravascular treatment cohort
Prazo: During the procedure

Operation time of intravascular treatment cohort.
During the procedure
Distribution of mRS scores at 6 months after enrollment
Prazo: 6 months after enrollment

The modified Rankin scale (mRS) ranged from 0 to 6, with a score of 0 indicating no disability, 1 no clinically significant disability, 2 slight disability, 3 moderate disability but remaining able to walk unassisted, 4 moderately severe disability,5 severe disability, and 6 death.
6 months after enrollment
The recurrence rate of stroke at 6 months after enrollment
Prazo: 6 months after enrollment

The recurrence rate of stroke at 6 months after enrollment.
6 months after enrollment
Transient ischemic attack at 6 months after enrollment
Prazo: 6 months after enrollment

Transient ischemic attack at 6 months after enrollment.
6 months after enrollment
All-cause mortality at 6 months after enrollment
Prazo: 6 months after enrollment

All-cause mortality at 6 months after enrollment.
6 months after enrollment
Revascularization of target vessels at 6 months after enrollment
Prazo: 6 months after enrollment

Revascularization of target vessels at 6 months after enrollment.
6 months after enrollment
Distribution of mRS scores at 12 months after enrollment
Prazo: 12 months after enrollment

The modified Rankin scale (mRS) ranged from 0 to 6, with a score of 0 indicating no disability, 1 no clinically significant disability, 2 slight disability, 3 moderate disability but remaining able to walk unassisted, 4 moderately severe disability,5 severe disability, and 6 death.
12 months after enrollment
The recurrence rate of stroke at 12 months after enrollment
Prazo: 12 months after enrollment

The recurrence rate of stroke at 12 months after enrollment.
12 months after enrollment
Transient ischemic attack at 12 months after enrollment
Prazo: 12 months after enrollment

Transient ischemic attack at 12 months after enrollment.
12 months after enrollment
All-cause mortality at 12 months after enrollment
Prazo: 12 months after enrollment

All-cause mortality at 12 months after enrollment.
12 months after enrollment
Revascularization of target vessels at 12 months after enrollment
Prazo: 12 months after enrollment

Revascularization of target vessels at 12 months after enrollment.
12 months after enrollment

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Adverse events within 12 months after enrollment
Prazo: 12 months after enrollment

Adverse events events within 12 months after enrollment.
12 months after enrollment
Serious adverse events within 12 months after enrollment
Prazo: 12 months after enrollment

Serious adverse events within 12 months after enrollment.
12 months after enrollment
Symptomatic intracranial hemorrhage within 12 months after enrollment
Prazo: 12 months after enrollment

Symptomatic intracranial hemorrhage within 12 months after enrollment.
12 months after enrollment
Ischemic stroke within 12 months after enrollment
Prazo: 12 months after enrollment

Ischemic stroke within 12 months after enrollment.
12 months after enrollment
Hemorrhagic stroke within 12 months after enrollment
Prazo: 12 months after enrollment

Hemorrhagic stroke within 12 months after enrollment.
12 months after enrollment
All-cause death and other important clinical safety events within 12 months after enrollment
Prazo: 12 months after enrollment

All-cause death and other important clinical safety events within 12 months after enrollment.
12 months after enrollment
Proportion of at least one complication in the intravascular therapy cohort
Prazo: Perioperative

The intravascular treatment cohort included perioperative vascular dissection, vascular perforation or rupture, distal embolization, acute occlusion, re-occlusion, cerebral hyperperfusion syndrome and puncture site complications.
Perioperative

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Xuan Sun

Investigadores

  • Investigador principal: Xuan Sun, MD, Beijing Tiantan Hospital

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de outubro de 2026

Conclusão Primária (Estimado)

31 de dezembro de 2028

Conclusão do estudo (Estimado)

31 de dezembro de 2029

Datas de inscrição no estudo

Enviado pela primeira vez

9 de setembro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

21 de setembro de 2026

Primeira postagem (Real)

28 de setembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

28 de setembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

21 de setembro de 2026

Última verificação

1 de setembro de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • HX-A-2026022

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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