View clinical trials related to Peripheral Vascular Diseases.
Filter by:Non-interventional study aiming to ascertain the mechanical properties of human saphenous and popliteal vein tissue.
This is a randomized controlled trial designed to evaluate the role of screening for and intervening on patients with high on treatment platelet reactivity undergoing lower extremity arterial endovascular interventions.
Health inequality and genetic disparity are a significant issue in the United Kingdom (UK). This study focuses on diseases that are associated with significant morbidity and mortality in the UK, and specifically examines the extent and basis of treatment failure in different patient populations. The vast majority of drug registration clinical trials have under-representation of ethnic minority populations. In addition, the wider Caucasian populations have reasonably different clinical characteristics to the population that participated in the drug licencing clinical trials. A consequence of this is that drugs are licensed for use in real-world general patient populations where the clinical trial results are simply not statistically significant to specifically demonstrate efficacy or safety in populations that were either absent or under-represented in the drug registration clinical trials. When these facts are considered alongside data that supports significant under-reporting of adverse events in the real-world setting within the UK (and globally, e.g the USA and Europe), it highlights that pharmacovigilance systems are unable to capture drug effectiveness and safety data in a manner that can reasonably assure appropriate prescribing in the wider patient populations. This large real-world research study aims to identify whether commonly prescribed drugs are effective in treating illnesses that cause significant poor health and death in the different patient populations that represent the UK. The goal of this study is to generate large quantitative data-sets that may inform clinical practice to reduce the existing health inequality and genetic disparity in the UK.
Diabetic lower extremity disease, including peripheral vascular disease, peripheral neuropathy, foot ulcers, or leg amputation. Among them, peripheral arterial disease (PAD) is an important expression of systemic atherosclerosis. With the progress of the disease, impaired peripheral blood circulation will lead to many symptoms and signs, such as pain, paresthesia, and numbness. In past studies show that regular exercise with moderate intensity may help to improve metabolism and hemodynamic characteristics of the individual. In addition, many studies have found that despite substantial organic changes in downstream tissue, exercise training can improve walking ability and aerobic capacity in patients with peripheral arterial disease. To enhance exercise capacity in patients with PAD may involve redistribution of blood flow from vascular beds with lower O 2 exchange rates towards exercising ischemic muscles, an increase in nutritive leg muscle blood flow at the expense of regional shunting mechanisms, increased peripheral O 2 use during exercise attributable to more optimal distribution of leg blood flow, and possible increased muscle capillary density and mitochondrial capacity. Therefore, we tried to mimic local (leg) ischemic- reperfusion by systemic exercise, or to practice remote preconditioning effect by interval occlusion of the blood vessel in the upper arm which acquired ischemic preconditioning effect, and to improve local blood flow. Furthermore, the hemagglutination performance in PAD patients may also be used as an important indicator of cardiovascular disease.
The investigators will test the efficacy of the novel oxygen diffusion dressing allows delivery tissue oxygenation via TransCu O2® Oxygen Delivery System for use in caring for patients with surgically closed wounds. The investigators hypothesize that using this novel oxygen diffusion dressing will reduce the likelihood of necrotic tissue as well as severe incisional scar post-surgical closure by improving transcutaneous oxygen levels during wound healing process. TransCu O2 Oxygen Delivery System is a novel wound healing therapy that promises to enhance tissue hydration, which in turn may lead to quick epithelialization essential to reduce the likelihood of formation of necrotic tissue and excessive scars.
Endovascular treatment with stenting is currently used in the treatment of femoro-popliteal lesions. This technique tends to extend to lesions for which the gold standard remains until now the open surgery treatment (lesions TASC C and D). The primary objective of the study was to evaluate the clinical efficacy at 12 months of the SuperA stent (Abbott) in the treatment of long de novo atherosclerotic lesions TASC C and D in patients with symptomatic peripheral arterial disease. The secondary objectives are to evaluate the clinical effectiveness of the SuperA stent at 24 months, according to clinical, morphological and haemodynamic criterias, the possible influence of calcifications and the quality of life of patients
This is a prospective, multi-center, pilot feasibility study to document the effects of adventitial delivery of temsirolimus or temsirolimus with dexamethasone sodium phosphate injection, USP, after revascularization of femoropopliteal lesions in symptomatic patients with moderate to severe claudication (Rutherford 2-3) or critical limb ischemia (CLI) with rest pain (Rutherford 4). Subjects will be followed for up to 60 months post index procedure.
This trial randomises patients with occlusive peripheral arterial disease, to be managed either by providing a 12-week structured lifestyle modification programme, or standard healthcare.
The investigators hypothesise that a home-based standardised exercise intervention with 2g of carnosine daily for 6 months will improve walking endurance in 104 patients with PVD aged 40-80 years compared to placebo and exercise through stabilisation of HIF1-α in the ischaemic leg. Aims Aim 1: Determine whether in patients with PVD, carnosine in addition to exercise improves: 1. walking endurance (6-min walk test; primary outcome); 2. initial claudication distance (ICD), and absolute claudication distance (ACD; treadmill), cadence, resting and exercise ABI; and 3. central blood pressure, endothelial function, arterial (aortic) stiffness, lipid profile; and 4. quality of life as determined by EuroQol-5D (all secondary outcomes). 5. Improve cognitive function (global cognitive score formed by a composite of 7 cognitive tests) Aim 2: Delineate the mechanisms by which carnosine improves walking endurance: 1. protein expression of pro-angiogenic and carnosine related genes, including carnosine transporters in the skeletal muscle biopsies, EPCs in peripheral blood and quantitative proteomic studies. 2. other mechanisms demonstrated in animal studies including plasma inflammatory markers, serum and urinary advanced glycation (AGE) and lipoxidation (ALE) end-products (tertiary outcomes). This trial will provide evidence for use of carnosine as a therapeutic intervention for PVD patients and, if positive, will have immediate clinical application.
Patient Power is a patient research network and database (registry) to collect prospective information about demographics, self-reported diagnoses and medications, and willingness to participate in research from participants with rheumatoid arthritis (RA), spondyloarthritis (SpA), other musculoskeletal conditions, chronic neurological conditions like migraine, chronic pulmonary conditions like Chronic Obstructive Pulmonary Disease (COPD), asthma, autoimmune dermatological conditions such as psoriasis, and other chronic inflammatory or immune-mediated conditions. In addition, since patients with chronic conditions often have other co-morbidities like cardiovascular health and obesity-related metabolic disorders, these conditions will also be included. Participants will provide information from their smartphones or personal computers. The information will be used by researchers and clinicians to help patients and their providers make better, more informed decisions about treatment of chronic conditions.