View clinical trials related to Carotid Stenosis.
Filter by:The investigators hypothesize that inflammation in carotid plaque is predictive of the extent of ischemic lesion burden on the brain and will add to risk stratification for individuals with carotid disease.
The purpose of this study is to determine the prevalence and risk factors, at the time of the diagnosis of PAD, for asymptomatic carotid stenosis and abdominal aortic aneurysm.
Carotid endarterectomy has been proven effective in prevention of cerebral vascular events in patients with severe carotid artery stenosis (symptomatic,>50%;asymptomatic,60%). But during the surgery, when the carotid artery is clipping, the patient will have the chance to have hypoperfusion or stroke. Our study is designed to determine how to use TCD to reduce the risk of death and nonfatal stroke in patients .
As with coronary artery stenting, activation and embolisation of platelets occurs with carotid artery stenting (CAS). Based on promising data on the use of clopidogrel plus aspirin in coronary stenting this dual antiplatelet regimen has been introduced as adjunctive treatment during CAS. There is as yet, however, no randomized controlled trial which compared different loading doses of clopidogrel during CAS. Taking into account that a wide interindividual variability in the response to a loading of clopidogrel exists, this study is intended to establish the optimal loading dose of clopidogrel. Therefore platelet function testing and a 1-hour of postprocedural TCD (transcranial doppler) monitoring will be performed. Objective: Firstly, to investigate whether the absolute magnitude of Platelet Inhibition inversely correlates with the number of TCD-detected microemboli during and after CAS in patients who are being pre-treated with either a 300 mg or a 600 mg loading dose of clopidogrel. Secondly, if there is any impact on early neurological outcome determined by the loading dose of clopidogrel.
The purpose of this study is to get outcomes data for the Adapt Monorail Carotid System used in conjunction with the FilterWire Embolic protection system for treatment of patients that suffer from carotid artery stenosis and that cannot have surgery due to high risk factors.
Diabetes Mellitus (DM) is frequently appearing in patients with cardiovascular disease and these patients, as a consequence herby, has a lesser prognosis. DM is often related to increased arterial stiffness and hypertension. The investigators thesis is that DM and pre-diabetes is prevalent in patients undergoing cardiovascular surgery and to some extend is under-diagnosed. At the same time the investigators imagine that DM is closely related to the degree of arterial stiffness, and that these parameters are closely related to a new biochemical marker, fibulin-1. The investigators aim to describe the prevalence of type 2 DM and dysmetabolism in patients admitted to the hospital to undergo cardiovascular surgery and besides that to investigate if there is a connection between the degree of the dysmetabolism and arterial disease, by studying arterial stiffness and by measuring a new biochemical marker, fibulin-1, which the investigators newly have identified. The results of this project will give us a measure for the quantity of unknown DM in patients undergoing cardiovascular surgery and furthermore tell us more in terms of the connections between a newly identified plasma arterial marker, arterial stiffness and diabetes.
The purpose of this study is to determine the effectiveness of oxygenation and patient-acceptability of a novel oxygen face mask in patients undergoing carotid endarterectomies (CEAs).
The impact on cardiovascular events achieved by statin therapy seems to be mostly attributable to the cholesterol-lowering effect with a highly debated contribution of the lipid-independent pleiotropic effects. However, a short-term benefit has been documented for patients treated with statins in acute coronary syndromes and other clinical settings. These observations strengthened the hypothesis of additional, so-called pleiotropic actions of statins. The investigators therefore sought to investigate how different lipid-lowering strategies (non-statin therapy, low-dose statin and high-dose statin) affects cellular composition of carotid plaque over a short-term period of three months. Specifically the investigators tried and dissect the LDL-C lowering impact on plaque cellular composition as compared to the lipid-independent contribution on plaque macrophage and smooth muscle cells.
This observational study looks at Carotid Stenosis in two groups of subjects using a non-invasive procedure, B-mode ultrasound. One group of subjects has had long-term intensive lipid altering therapy (lowering LDL-C plus raising HDL-C). The second group of patients has been on conventional "standard of care" treatment for carotid stenosis. The study will look at the Carotid Intima-media Thickness (CMIT) in both groups. Hypothesis: CIMT will differ between the two groups, such that the CIMT will be less in the subjects on intensive lipid altering therapy.
The project involves prospectively randomizing patients to either routine carotid shunting or selective carotid shunting during Carotid endarterectomy (CEA) under general anesthesia (GA) to see the difference in post-op complications and occurence rates. Patients will be randomized to Routine shunt vs selective groups.