View clinical trials related to Carotid Artery Diseases.
Filter by:Stroke is a significant medical problem with 150,000 events occurring per year in the UK and incurring healthcare costs of £4 billion per year. Fifty percent of strokes will leave a lasting disability on first manifestation and 10-15% (roughly 16,500 per year) are unheralded ischaemic events in previously asymptomatic Carotid artery disease. Carotid Artery Disease is caused by the formation of an atherosclerotic plaque in the vessel. Stroke or TIA occurs when plaque or adherent thrombus breaks off and embolises to the brain, blocking off its blood supply. Hence, a carotid plaque is said to be symptomatic if it has caused a Stroke or TIA in the territory of the brain supplied by that vessel in the previous six months. Currently, the degree of stenosis (narrowing) of the artery by doppler ultrasound is the main assessment performed. Doppler ultrasound measures stenosis and elevation of blood flow velocity in the artery prior to surgical intervention. However, it has been shown that the degree of stenosis is a poor predictor of stroke as many asymptomatic patients have severe stenosis and many symptomatic patients have moderate stenosis. Stenosis is a two dimensional assessment of a 3-D structure. Other features of the plaque should be considered including the volume of the carotid plaque and its constituents. Carotid Plaque Volume has been measured in 339 individuals, with plaque volume being higher in symptomatic than asymptomatic individuals. In this study, plaque volume did not correlate with stenosis degree. No studies have been conducted measuring the change in carotid plaque volume and morphology following a stroke. This pilot study will perform serial duplex scans on recently symptomatic individuals over a 12 week period and observe the changes in Plaque Volume and morphology. This will attempt to prove that carotid plaque volume is a better predictor of stroke than stenosis. The investigators will also aim to identify other plaque features that may have an important role in predicting stroke risk. Documenting the timescale of change in plaque volume will aid us in defining appropriate timescales for treating the symptomatic population and when those having medical management's risk has returned to baseline. Observing the change in plaque immediately after stroke will improve our knowledge of the changes in plaques that lead to symptoms and may in the future help us predict which patients with asymptomatic carotid stenosis need operation.
The objective of this post-market clinical follow-up study is to evaluate the clinical outcomes of patients receiving PhotoFix as a patch within a vascular repair or reconstruction procedure.
An observational cohort study of the frailty of vascular surgery patients undergoing intervention and their outcomes.
The aim of this trial will be to test and validate the value of scintigraphy with injection of 99mTc-Annexin-V-128 for the detection of complicated carotid plaques
This is a prospective and observational study in patients with type two diabetes. The study hypothesis is that chronic hyperglycemia causes an increase in the microcirculation on the carotid artery wall and retina, evaluated by angio-OCT. Furthermore, the reestablishment of normoglycemia would decrease this microcirculation, which could trigger hypoxic and ischemic changes, accelerating preclinical atherosclerosis. The study goal is to describe the microangiopathy in both territories in patients with type two diabetes and chronic hyperglycemia, and to evaluate changes after the reestablishment of normoglycemia.
This Study investigates presence of preclinical atherosclerosis in patients with Juvenile Mixed Connective Tissue Disease in Norway.
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).
From our experience among Egyptian population in our institution, there is an increased prevalence of hidden subclinical peripheral artery disease along with carotid artery affection. Thus, increasing the risk of post-operative morbid complications.We aim to evaluate routine/ non-selective carotid and peripheral arterial screening in asymptomatic patients undergoing coronary artery bypass grafting in the Egyptian populationIt is a prospective, non-randomized, comparative study including two groups of patients. The study will start from the day of approval of the ethical committee. It will include 260 patients, on basis of "all new comers". Patients will be examined and classified as "high-risk" group (ɳ = 130) or "low-risk" group (ɳ=130). All patients will have the "routine" preoperative investigations along with evaluation of extracranial carotid system by non-invasive carotid duplex and lower limb arterial system by non-invasive bilateral lower limb arterial duplex.
Carotid revascularization procedures are performed for more than 87% of cases in patients with asymptomatic internal carotid stenosis (ICS), who are assumed to have a life expectancy of at least 5 years. Hence, the investigators aim to compare carotid artery stenting (CAS) with carotid endarterectomy (CEA) in terms of long-term prognostic endpoints in patients with uneventful perioperative course. CEA and CAS, as a consequence of either surgical trauma or mechanical stimuli related to the compliance mismatch between the stented segment and the native artery, may perturb carotid baroreceptors function causing an impairment of cardiovascular autonomic control. Also, CEA and CAS result in different postoperative geometric features of carotid arteries that entail relevant modifications of rheological parameters, that may be associated with the risk of local complications. Finally, long-term and sustained cognitive benefits after CAS as compared to CEA are yet to be demonstrated.
This is an intersectional and interdisciplinary screening program in Viborg Municipality, including 67 years old citizens. This observational study will estimate the cost-effectiveness of a combined screening program for the following conditions: Abdominal aortic aneurysm, peripheral arterial disease, carotid plaque, hypertension, arrhythmia, and type-2-diabetes. Furthermore, the incidence of the outlined conditions will be described and so will the result of the intervention initiated (secondary medical prophylaxis, smoking cessation, introduction to nutritionally deficient diet etc.)