Active clinical trials for "Peripheral Vascular Diseases"

Autoimmune diseases are diseases in which inappropriate immune responses that have the capability of harming host cells play an important role. Evidence suggests that the presence of certain autoimmune diseases such as rheumatoid arthritis or systematic lupus erythematosus increase the risk of cardiovascular disease (CVD). However, this evidence is inconsistent for autoimmune disorders and no systematic approach has been previously used to study the relationship between a range of common autoimmune disorders and specific forms of cardiovascular diseases such as myocardial infarction, intracerebral and subarachnoid haemorrhage, or venous thrombosis. The investigators will use linked electronic health records to investigate whether commonly diagnosed autoimmune disorders are associated with increased risk of CVD development and whether effects differ in men and women and change with age.

The association between alcohol consumption and cardiovascular disease (CVD) has mostly been examined using broad endpoints or cause-specific mortality. The purpose of our study is to compare the effect of alcohol consumption in the aetiology of a range of cardiovascular disease phenotypes.

The investigators aimed to use pharmacogenetic information in clinical practise which may lead to rapid, efficient, and safe warfarin dosing in this observational prospective study. In this context, the investigators plan to develop an algorithm for estimating the appropriate warfarin dose that is based on both clinical and genetic data from the Turkish study population. This study is unique not only investigating clinical factors, demographic variables, CYP2C9, and VKORC1 gene variations which contribute to the variability among patients in dose requirements for warfarin but also including thrombogenic single nucleotide polymorphisms (SNP) in the same patient population. Thus, warfarin would be a good example by being the first cardiovascular drug for pharmacogenetic guided "personalized medicine" applications.

The aim of this randomized controlled trial is to: Phase I: To explore, in a first pilot phase, the adequate combination of hypoxia severity and exercise intensity in patients with symptomatic lower extremity artery disease (LEAD). Acute walking performances and physiological responses (vascular and muscular) to a normobaric hypoxic exercise performed will be assessed at two different altitudes (1500 m and 2500 m).

The MIMICS-3D study will evaluate safety, effectiveness and device performance within a real-world clinical population of patients undergoing femoropopliteal intervention.

The Promus Premier below-the-knee (BTK) drug-eluting stent (DES) is specifically designed to improve BTK vessel patency rates using a platinum-chromium alloy based stent that elutes the anti-restenotic drug everolimus to inhibit neo-intimal hyperplasia. Although DES stents are considered standard of care for certain BTK lesions, there is a paucity of data on the use of DES in the contemporary BTK chronic limb threatening ischemia (CLTI) population, especially in Singapore. The aim of the Promus PREMIER BTK registry is to collect one year data of the Boston Scientific Promus PREMIER BTK DES in BTK lesions in CLTI patients.

Post market clinical follow up of Bycross® device.

Heparin-Binding protein is a protein from primary and secretory granluae of white blood cells. It is released when white blood cells become activated and has been advocated as a biomarker for sepsis. The aim of this study is to find out if Heparins in clinical doses can change the level of Heparin-binding protein in plasma.

Prospective observational study of MicroNet covered stent implantation in the elevated risk peripheral lesions (high lesion load, thrombus containing, highly calcified). Open-label, non randomized, single arm observational study. Jagiellonian University Medical College research project.

Cardiovascular disease (CVD), a condition predominantly caused by atherosclerosis, is the leading cause of morbidity and mortality in the investigator's society. Peripheral arterial disease (PAD), a subset of CVD, occurs when the atherosclerosis progresses to compromise the lower extremity circulation resulting in ischemic symptoms. Although atherosclerosis has been generally regarded as a disease of developed or affluent countries, recent evidence showed a progressive rise in the prevalence of CVD in developing countries where an epidemiological shift of disease prevalence patterns from infectious illnesses to atherosclerotic disease has occurred. Management of CVD, particularly with an emphasis of disease prevention, will undoubtedly play an increasing vital role in the health care system around the world. Endothelial dysfunction, as reflected by the impaired arterial vasodilatory capacity, represents one of the pathogenic mechanisms linking atherosclerosis and cardiovascular mortality. The ability of arteries to dilate in response to stimuli is a significant indicator of underlying vascular endothelial function and associated CVD. Factors modulating vasodilatory response include the release of vasoactive compounds such as nitric oxide (NO) from the endothelium and vascular compliance. In healthy individuals, a major mechanism responsible for vasodilation is the hyperemic-stimulated release of NO from the endothelium, resulting in vascular smooth muscle relaxation with subsequent vasodilation. Vascular endothelial function can be assessed using a non-invasive technique to determine brachial artery reactivity whereby a high-resolution ultrasound is used to measure changes in brachial artery diameter to endogenous production of endothelium-derived NO via flow-mediated dilation (FMD). Therefore, reduced FMD has been described as a reliable indicator of vascular endothelial dysfunction as well as presence of underlying CVD risk factors and related diseases. Recent studies have similarly shown that arterial pulse-wave velocity (PWV), which is a non-invasive evaluation of arterial stiffness, is a reliable indicator of vascular function. While numerous studies have documented the benefit of dietary intervention in the reduction of CVD related sequelae, limited data is available regarding whether the beneficial effect of dietary intervention are reflected in vascular endothelial function. The present study was therefore conducted to assess the effects of plant-based diet (PBD) on vascular endothelial function as assessed by FMD and PWV in patients with peripheral arterial disease (PAD).