View clinical trials related to Carotid Artery Diseases.
Filter by:To compare the safety of dual antiplatelet therapy with aspirin and clopidogrel and single antiplatelet therapy administered from 30 days to 12 months following carotid artery stenting on clinically significant bleeding and its prevention effects on net clinical events including combined cardiovascular and cerebrovascular accidents and major bleeding events in patients with carotid artery disease who are at high bleeding risk.
Cardiovascular disease (CVD) represents the leading cause of death worldwide. While medications, such as statins, significantly reduce atherosclerotic CVD (ASCVD) risk by lowering low density lipoprotein levels, they may also have pleiotropic effects on inflammation. The immunomodulatory effects of these medications are relevant to ASCVD risk reduction given that inflammation plays a central role in atherosclerotic plaque formation (atherogenesis) and influences the development of vulnerable plaque morphology. Patients on statins, however, may have residual inflammation contributing to incident ASCVD despite the potent LDL-lowering effects of statins. While new therapies, such as proprotein convertase subtilisin/kexin type 9 (PSCK9) inhibitors, further reduce incident ASCVD and drastically reduce LDL-C below that achieved by statin therapy alone, PCSK9 inhibitors may also have pleiotropic effects on inflammation. Thus, PCSK9 inhibitors may help reduce arterial inflammation to a level closer to that of patients without ASCVD. This study will apply a novel targeted molecular imaging approach, technetium 99m (99mTc)-tilmanocept SPECT/CT, to determine if residual macrophage-specific arterial inflammation is present with statin therapy and the immunomodulatory effects of PSCK9 inhibition. Given the continued high mortality and morbidity attributable to ASCVD, strong imperatives exist to better understand the immunomodulatory effects of lipid lowering therapies and residual inflammatory risk. This understanding, in turn, will inform the development of new ASCVD preventative and treatment strategies as well as elucidate other indications for established therapies.
Check whether patients with higher comorbidity and risk of complication, estimated using the V (p) -POSSUM score, ACS NSQIP and the ASA classification, present higher baseline activated clotting time values.
Left ventricular diastolic dysfunction is caused by impaired relaxation and increased left ventricular stiffness with a consequent increase in filling pressures. Currently, it is possible to classify it in 3 grades: grade 1 with normal filling pressures, grade 2 and grade 3 with high pressures. Diastolic dysfunction is closely associated with several risk factors such as hypertension, diabetes, and obesity, as well as the risk of heart failure, cardiovascular events, and death. In the field of cerebrovascular diseases, however, diastolic dysfunction is still being researched. Thus, this study aims to: 1) evaluate the white matter hyperintensities volume in association with the increase of diastolic dysfunction and filling pressures 2) evaluate the possible association with carotid atherosclerosis in case of brain damage caused by dysfunction diastolic 3) understand the mechanism of damage caused by left ventricular diastolic dysfunction on the cerebrovascular system. In order to do this, this study proposes to evaluate in a cohort of patients, between 35 and 65 years, the possible association of diastolic dysfunction with lesions on the cerebrovascular system in a future view of new marker of brain damage and new modifiable risk factor.
Atherosclerosis is a disease of the arteries and is the result of various factors such as high blood cholesterol or diabetes, which lead to accumulations of fats, cells, and calcium deposits (i.e. plaques). It has been shown that people with a rapid increase in the amount of calcium deposits have a higher risk for stroke and heart attack than people with a decreased amount. Previous scientific research has shown that a protein called Matrix Gla Protein plays an important role in the prevention of calcification. This protein works well only if there is enough Vitamin K in the blood vessels. In a large human studies, it has been shown that especially MK-7 (a form of Vitamin K2) is best absorbed by blood vessels. Moreover, studies suggest positive effects of vitamin D (especially D3) on vitamin K-dependent metabolism. Over the last years, fluorine-18 sodium fluoride (18F-NaF) positron emission tomography (PET) emerged as a reliable clinical imaging tool able to detect micro-calcification in the blood vessels. Therefore, the present study will use 18F-NaF PET in combination with magnetic resonance imaging (MRI) to assess the influence of vitamin K and D supplementation in the development of arterial micro-calcification in the context of atherosclerosis. The present study would like to confirm that MK-7 and vitamin D3 supplementation induces a significant reduction in the degree of micro-calcification from carotid artery disease patients, when comparing to a placebo, after 3 months. This will be a prospective double blind randomised controlled feasibility study, in which one group will receive a MK-7 and vitamin D3 supplementation compared to a control group receiving a placebo.
Radiation-associated carotid vasculopathy is a common late sequelae in patients with head and neck cancer, which correlates with the incidence of stroke. Currently, little is known about the incidence of radiation-associated carotid vasculopahty in the context of intensity-modulated radiation therapy (IMRT). The aim of this study is to determine whether IMRT will increase the incidence of carotid vasculopathy in patients with nasopharyngeal carcinoma (NPC).
The correlation between metabolic syndrome and carotid artery stenosis is well established. The purpose of this study is to evaluate the relationship between morbid obesity and carotid artery stenosis.
the study will be carried out to standardize normal parameters of vascular duplex ultrasound of the cranial vessels in the Egyptian population.
Purpose: To investigate the different sound spectrum of carotid arteries and to analyze its relationship to the vessel disease, and to build a new biomarker about vascular disorder. Methods: To record the carotid phonoangiography with digital stereoscopy and analysis the spectrum with different algorithm such as FFT, wavelet, entropy, complexity, and HHT. The results will be correlated and comparison to the finding in clinical, carotid Doppler and duplex, CTA, MR, and catheter angiography. Statistics: The significance of difference between parameters was computed using t-tests or paired t-test etc. A p value <0.05 is defined as significant.