Safety and Efficacy of Low Dosage of Terazosin in Subjects Undergoing Carotid Artery Stenting

A Pilot Study Assessing the Safety and Efficacy of Low Dosage of Terazosin in Subjects Undergoing Carotid Artery Stenting

The purpose of this study is to assess the safety and efficacy of low dosage of Terazosin in Carotid Artery Stenting

Inclusion Criteria:

1. Symptomatic or asymptomatic carotid artery stenosis. In symptomatic patients the degree of stenosis should more than 50% (Based on NASCET Criteria), in asymptomatic patients the degree of stenosis should more than 70% (Based on NASCET Criteria);
2. Tolerance to any of the study medications, including TZ, clopidogrel, aspirin and statins;
3. Hypertensive patients with or without oral antihypertensive drugs
4. Can cooperate with and complete brain MRI examination;
5. Stable vital signs, cardiopulmonary, liver and kidney function was no obvious abnormalities;
6. Has a negative pregnancy test within 7 days before randomization and no childbearing potential;
7. Stable vital sign, normal renal and hepatic functions;
8. Informed consent.

Exclusion Criteria:

1. Evolving stroke;
2. Hemorrhagic tendency；
3. Severe dementia or Prior major ipsilateral stroke, if likely to confound study endpoints;
4. Chronic atrial fibrillation or any other Cardiogenic emboli source disease;
5. Myocardial infarction within previous 30 days;
6. Spontaneous Intracerebral Hemorrhage within the past 180 days, Hemorrhagic conversion of an ischemic stroke within the past 60 days or recent (<7 days) large area cerebral infarction has a hemorrhagic conversion tendence;
7. Any conditions that hampers proper angiographic assessment or makes percutaneous arterial access unsafe;
8. High risk candidates of CAS defined as the Carotid Revascularization Endarterectomy vs. Stenting Trial (CREST);
9. Thiazides taken within 14 days before randomization;
10. Participating in any other clinical trial that has not completed the required protocol follow-up period;