Active clinical trials for "Peripheral Vascular Diseases"

Peripheral arterial disease (PAD) is one of the most common cardiovascular diseases in developed countries [1] and is an emerging problem in developing countries [2, 3]. The prevalence of PAD in European population studies ranged from 3.6 to 9.2 % and 10-20 % in those aged over 70 years [4]. In a recent meta-analysis, the prevalence of PAD in China increased gradually by age until mid-60s, after which the increase accelerated. In the early stages, PAD is mostly silent. With the progression of disease, it may manifest as intermittent claudication, pain at rest, non-healing ulcer and gangrene resulting in lower-extremity amputation [5]. PAD is a major cause of disability, loss of employment, and lifestyle changes, and is a marker for systemic atherosclerotic diseases. Patients with symptomatic PAD have at least a 30% risk of death within 5 years rising to almost 50% within 10 years, resulting primarily from myocardial infarction or stroke [4]. Despite the major health risks associated with PAD, it is generally not recognized by clinicians or the general public in comparison with other cardiovascular diseases. However, asymptomatic individuals also have higher risk of adverse cardiovascular events similar to those with symptomatic PAD [6]. Many studies have shown that public awareness of PAD is much lower than that of other diseases. It has been reported that awareness of PAD ranged from 20 to 36 %, whereas awareness of other common diseases was more than 60 % in the same population [6-9]. Awareness is important for patients and physicians, and the need for public awareness programs has been highlighted [10, 11]. There is paucity of published literature on public awareness of PAD in Asian countries. It is difficult to reduce the morbidity and mortality of untreated PAD without adequate public awareness of PAD and its risk factors and consequences [7]. Insights into public awareness of PAD will help in developing strategies for behavioral change communication and health promotion. In this study we aimed to assess awareness of PAD among adults in Hong Kong. The survey is designed to measure knowledge of factors that increase the risk for PAD and the clinical risk consequences of having PAD. These data will provide useful information to guide future local public cardiovascular educational efforts.

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.

Cardiovascular risk functions fail to identify more than 50% of patients who develop cardiovascular disease. This is especially evident in the intermediate-risk patients in which clinical management becomes difficult. The purpose of this study is to analyze if ankle-brachial index (ABI), measures of arterial stiffness, postprandial glucose, glycosylated hemoglobin, self-measured blood pressure and presence of comorbidity are independently associated to incidence of vascular events and whether they can improve the predictive capacity of current risk equations in the intermediate-risk population.

The objective of this non-interventional Post Authorisation Safety Surveillance (PASS) study is to observe the clinical safety performance of EVICEL when used as suture support for haemostasis in vascular surgery.

The purpose of this study is to better understand why some vein bypass grafts develop narrowing. Evidence suggests that there is a relationship between inflammatory markers in the blood and the narrowing that occurs in blood vessels. In this study, we will look at inflammatory markers in the blood and how well the vein graft functions.

A cholesterol/lipid profile screening project of high risk patients with hyperlipidaemia (secondary prevention) who already receive cholesterol-lowering therapy. Lipid profile and rate of patients who are treated to target (which is <100mg/dl for patients with high risk and <70mg/dl for patients at very high risk) are screened (hospital-based specialists). The doctors therapy decisions after the screening and possible reasons for these decisions will be documented. Our aim is to evaluate dosing habits, to evaluate how many patients are treated to their LDL-C target and to underline the importance of treating patients to their cholesterol targets.

Contrast ultrasound perfusion imaging (CUPI) is a novel tool for the assessment of muscle perfusion deficits in peripheral arterial disease (PAD). In this study we want to examine the effect of bypass surgery and balloon angioplasty on the calf muscle blood supply. We hope find a new way of quantifying success or failure of invasive treatment strategies.

The purpose of this clinical study is to test whether or not patients treated with HBOT for diabetic foot ulcers will demonstrate measurable changes of the blood vessel function during the course of HBOT treatments. , i.e. an expected increase in the reactive hyperemic index (RHI) measured by the peripheral arterial tonometry (PAT).

To examine the epidemiology of renal disease and its relationship to cardiovascular disease.

The Rio Study is a randomized, double blinded German- Swiss- Austria multi-centre trial on the efficacy and safety of ReoPro together with interventional recanalization of TASC D lesions in the SFA and popliteal artery.