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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05623943
Other study ID # XWFFR-1
Secondary ID
Status Completed
Phase
First received
Last updated
Start date June 1, 2019
Est. completion date February 1, 2023

Study information

Verified date November 2022
Source Xuanwu Hospital, Beijing
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The goal of this observational study is to explore the ability of intravascular pressure gradients to identify hemodynamic disturbance in patients with intracranial atherosclerotic diseases (ICAS). The main questions that aim to answer are: - The correlation between intravascular pressure gradient and cerebral blood flow (CBF) - The threshold for intravascular pressure gradients to predict hemodynamic disturbance in ICAS Patients will undergo intravascular pressure measurement and arterial spin labeling (ASL) for CBF during pre- and post-operation respectively.


Recruitment information / eligibility

Status Completed
Enrollment 25
Est. completion date February 1, 2023
Est. primary completion date January 1, 2023
Accepts healthy volunteers No
Gender All
Age group 40 Years and older
Eligibility Inclusion Criteria: 1. Patients aged 40 years or older. 2. Patients with transient ischemic attack (TIA) or nondisabling ischemic stroke caused by a focal ICAS lesion located in intracranial anterior circulation (vertebral artery, basilar artery or intracranial internal carotid artery and their major branches). 3. 50% to 99% stenosis (calculated by modified WASID method) of responsible arterial occlusion, confirmed by digital subtraction angiography (DSA). 4. Informed of the study protocol and objectives. Exclusion Criteria: 1. Non-atherosclerotic MCA stenosis 2. Combined with moderate or severe stenosis of other extracranial and intracranial arteries 3. Previous endovascular treatment or surgery for cerebrovascular diseases 4. Large cerebral infarction (more than 1/2 MCA perfusion area) 5. Combined with other neurological diseases, such as aneurysm, arteriovenous malformation, tumor, hydrocephalus, cerebral trauma, cerebral hemorrhage, multiple sclerosis, epilepsy and intracranial infection. 6. Vascular abnormality or stunting, resulting in the impossibility of endovascular intervention 7. Liver and kidney dysfunction, or severe allergy to the contrast agent 8. Severe coagulation dysfunction 9. Pregnancy or in the preparation for pregnancy 10. Patients who cannot tolerate or do not allow MR screening, including metal implanting and claustrophobia 11. Patients with severe dementia or mental disorders, who cannot cooperate with examination

Study Design


Intervention

Procedure:
Endovascular treatment
Patients treated with endovascular treatment, including balloon angioplasty alone and balloon angioplasty plus stenting.

Locations

Country Name City State
China Xuanwu Hospital, Capital Medical University Beijing Beijing

Sponsors (2)

Lead Sponsor Collaborator
Xuanwu Hospital, Beijing National Key Research and Development Project, China

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Primary The relevance between intravascular pressure gradients and CBF Patients will be divided into 2 groups according to whether they have hemodynamic disorders before operation and improve after operation. Fractional flow reserve (FFR) measurement will be analyzed in each group. Post-operation, an average of 3 days
Secondary The difference of ASL-CBF between pre- and post-operation The mean cerebral blood flow (CBF) of ipsilateral region of interest (ROI) in two different layers will be recorded as CBF in MCA perfusion area of this side. Relative CBF (rCBF) is defined as the ratio of the affected side CBF to the contralateral CBF. When preoperative rCBF<0.9 and postoperative rCBF=0.9, the patient will be considered to have hemodynamic disorders and be improved post-operation. Baseline and Post-operation, an average of 3 days
Secondary The difference of FFR between pre- and post-operation FFR measurement will be performed at rest by 0.014-inch pressure guide wires (C12008, Abbot St. Jude Medical, Minneapolis, MN, USA) designed for coronary diseases. The mean endovascular pressure of distal and proximal lesions will be measured and recorded as Pd and Pa, respectively. Pd/Pa and Pa-Pd will be calculated and recorded before and after endovascular treatment. Baseline and Post-operation, an average of 3 days
Secondary Any stroke or death in short term. 30±5 days
Secondary Procedure-related complications Any complications, related to manometry and treatment, will be recorded including arterial dissection, arterial perforation, acute vascular occlusion and other adverse events. 30±5 days
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