Identification of Carotid Plague Vulnerability by Contrast Enhanced Ultrasound: Correlation With Plague Histopathology
Study Details
Study Description
Brief Summary
OBJECTIVE/BACKGROUND: Intraplaque neovascularization is one of the most important risk factors for unstable carotid plaque. This study was designed to evaluate whether carotid intraplaque neovascularization (IPN) can be accurately assessed by contrast enhanced ultrasound (CEUS).
METHODS: Preoperative CEUS analysis of 50 carotid artery stenosis patients would be compared to histopathology performed on their plaques excised by carotid endarterectomy (CEA) with CD34 and MMP9 staining.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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Detailed Description
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To enroll 50 cases of patients suffering from carotid artery stenosis continuously, the investigators perform contrast enhanced ultrasound on patients for identifying the vulnerable plagues and taking high resolution MR inspection to analysis those plagues at the same time.
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All patients undergo carotid endarterectomy. The vulnerable ingredients of carotid plaques such as intraplaque neovascularization and bleeding are identified by pathological examination and immunohistochemical staining.
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To evaluate the accuracy of CEUS for identifying carotid vulnerable plague compared with high resolution MR.
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The investigators divide patients into the stable group and the vulnerable group based on the results of CEUS inspection. To analysis the incidence of postoperative complications such as stroke and mortality within 30 days and to compare the differences between the two groups.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Vulnerable plague The patients suffering from carotid artery stenosis were identified as the vulnerable plague group by Contrast Enhanced Ultrasound whose plagues were found intraplaque neovascularization |
Outcome Measures
Primary Outcome Measures
- the incidence of ischemia shock [within 30 days after operations]
The incidence of ischemic stroke was defined as the number of cases of postoperative cerebral infarction divided by the total number of cases
Secondary Outcome Measures
- the incidence of restenosis [6 months after operations]
the loss of lumen of carotid beyond 70% is defined as restenosis
- the incidence of all-cause mortality [within 30 days after operations]
All-cause mortality includes all causes of death, such as MI, heart failure, stroke, bleeding et al.
Eligibility Criteria
Criteria
Inclusion Criteria:
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The patients with ischemic symptom whose carotid stenosis were more than 50%
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The patients without ischemic symptom whose carotid stenosis were more than 70%
Exclusion Criteria:
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Confirmed with severe intracranial vascular lesions
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Suffering from the large area cerebral infarction or critical stroke sequela
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Restenosis after CEA or CAS
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Suffering from severe coronary heart disease, respiratory failure,the hypertension difficult to controled
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Patients with malignant tumor or expected life < 2 years
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Beijing Tsinghua Chang Gung Hosipital | Beijing | Beijing | China | 102218 |
Sponsors and Collaborators
- Beijing Tsinghua Chang Gung Hospital
Investigators
- Study Director: sifan Yang, M.D., Beijing Tsinghua Chang Gung Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- （2016）003