Ultra-early Identification of Futile Recanalization After Reperfusion Therapy in Acute Ischemic Stroke Based on Cerebral Autoregulation Monitoring

NCT07747701 | Recruiting

• 1 other identifier: FACTOR
• Study Type: interventional
• Target: 227
• Locations: 1 country
• Sites: 4

Brief Summary

This multicenter, prospective, and interventional diagnostic accuracy study enrolls patients undergoing thrombectomy with intraoperative cerebral autoregulation monitoring and follows them up at predefined time points up to 90 days post-enrollment.This study aims to evaluate a monitoring system based on cerebral autoregulation function and explore its predictive value for adverse neurological outcomes at the ultra-early stage following mechanical thrombectomy.

Conditions

Acute Ischemic Stroke; Cerebral Autoregulation

Outcome Measures

Primary Outcomes (1)

• Distribution of Modified Rankin scale

  the distribution of Modified Rankin scale (mRS) \[ranging from 0 (normal) to 6 (death)\]

  90±7days

Secondary Outcomes (1)

• Early neurological improvement

  24±12 hours

Study Arms (1)

Cerebral Autoregulation Monitoring After Mechanical Thrombectomy

EXPERIMENTAL

Participants with acute intracranial large vessel occlusion in the anterior circulation who achieve successful recanalization (mTICI 2b-3) after mechanical thrombectomy will undergo bedside cerebral autoregulation monitoring. Monitoring includes continuous near-infrared spectroscopy (NIRS) to record cerebral oxygen saturation and continuous noninvasive or invasive blood pressure measurement for 25-30 minutes immediately after recanalization. A carotid compression test is performed to dynamically assess cerebral autoregulation.

Device: NIRS-based cerebral oxygenation and blood pressure monitoring; Procedure: Carotid compression test

Interventions

NIRS-based cerebral oxygenation and blood pressure monitoring DEVICE

Bedside multimodal cerebral autoregulation monitoring performed immediately after successful mechanical thrombectomy (mTICI 2b-3). Monitoring includes continuous near-infrared spectroscopy (NIRS) to record cerebral oxygen saturation and continuous noninvasive or invasive arterial blood pressure measurement for 25-30 minutes. Cerebral oxygenation index (COx) is calculated as a moving Pearson correlation coefficient between mean arterial pressure and cerebral oxygen saturation over 30 consecutive 10-second epochs (300 seconds). COx ≥ 0.3 indicates impaired cerebral autoregulation, while COx \< 0.3 indicates preserved autoregulation. Changes in cerebral oxygen saturation before and after carotid compression are also used to assess autoregulatory.

Cerebral Autoregulation Monitoring After Mechanical Thrombectomy

Carotid compression test PROCEDURE

A carotid compression test is performed by compressing the common carotid artery at the lower one-third of the neck (avoiding the carotid sinus) against the transverse process of C6 until pulsation disappears for 5-10 seconds, followed by release. If the brain oxygen saturation has increased compared to before the test, it indicates that the brain's automatic blood flow regulation function is intact; conversely, if it has decreased, it is regarded as a damaged automatic blood flow regulation function of the brain.

Cerebral Autoregulation Monitoring After Mechanical Thrombectomy

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age ≥ 18
• Diagnosis of acute ischemic stroke caused by anterior circulation large vessel occlusion (intracranial internal carotid artery or M1 segment of the middle cerebral artery).
• National Institutes of Health Stroke Scale (NIHSS) score ≥ 6 at presentation.
• Pre-stroke modified Rankin Scale (mRS) score ≤ 1.
• Symptom onset ≤ 24 hours.
• For patients with symptom onset within 6 hours: ASPECTS ≥ 6; for patients with symptom onset between 6 and 24 hours: age ≤ 80 years and ASPECTS ≥ 3.
• Underwent mechanical thrombectomy and achieved successful recanalization (mTICI 2b-3).
• Patient or legally authorized representative provides written informed consent.

You may not qualify if:

• Pre-procedural baseline imaging showing significant intracranial hemorrhagic transformation, intracranial arterial dissection, large chronic cerebral infarction, or intracranial metastasis from malignant tumors.
• Any degree of stenosis, plaque, dissection, severe tortuosity, or imaging evidence of unstable/vulnerable plaque in the target-side or bilateral common carotid artery or the origin of the internal carotid artery.
• Known history of carotid sinus hypersensitivity syndrome, severe autonomic dysfunction, sick sinus syndrome, high-grade atrioventricular conduction block, or other malignant arrhythmias.
• Refractory malignant hypertensive crisis (systolic blood pressure persistently ≥ 200 mmHg despite standardized intravenous antihypertensive therapy, or hemodynamic instability with shock).
• Known severe allergy to contrast agents or anesthetic drugs, or contraindications to antiplatelet/anticoagulation therapy.
• Severe systemic active infection, multiple organ failure, or expected survival \< 6 months.
• Severe hepatic or renal dysfunction (ALT/AST \> 3× upper limit of normal; estimated glomerular filtration rate \< 30 mL/min) or severe coagulation disorders (platelet count \< 40 × 10⁹/L, APTT \> 50 s, INR \> 3.0).
• Blood glucose \< 2.7 mmol/L or \> 22.2 mmol/L.
• Heart failure with NYHA class \> II, or persistent systolic blood pressure \< 100 mmHg.
• Central nervous system infection or intracranial tumor.
• Unstable vital signs.
• Severe alcohol dependence or drug dependence.
• Cognitive impairment or psychiatric disorders that may affect follow-up assessments.
• Pregnant or breastfeeding women.
• Participation in another clinical drug or device study within the past 30 days.

Sponsors & Collaborators

• Beijing Shijitan Hospital, Capital Medical University: lead

Study Sites (4)

Beijing Shijitan Hospital, Capital Medical University

Beijing, China

RECRUITING

Central Hospital of Dalian University of Technology (Dalian Municipal Central Hospital)

Dalian, China

NOT YET RECRUITING

The First Affiliated Hospital of Harbin Medical University

Heilongjiang, China

NOT YET RECRUITING

Weifang People's Hospital Affiliated to Weifang Medical University

Shandong, China

RECRUITING

MeSH Terms

Conditions

Ischemic Stroke

Interventions

Blood Pressure Monitors

Condition Hierarchy (Ancestors)

Stroke; Cerebrovascular Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Vascular Diseases; Cardiovascular Diseases

Intervention Hierarchy (Ancestors)

Sphygmomanometers; Diagnostic Equipment; Equipment and Supplies

Study Officials

• Shen Li

  Beijing Shijitan Hospital, Capital Medical University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Simeng Wang

CONTACT

010-63925615; wsm990419@163.com

Shen Li

CONTACT

010-63925616; lishen@mail.ccmu.edu.cn

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: July 31, 2026
• First Posted: August 5, 2026
• Study Start: July 31, 2026
• Primary Completion (Estimated): January 31, 2027
• Study Completion (Estimated): February 5, 2027
• Last Updated: August 17, 2026

Record last verified: 2026-08

Data Sharing

• IPD Sharing: Will not share

Locations

CN (4)