Active clinical trials for "Peripheral Vascular Diseases"

This study postulates that the application of Sirolimus, an anti-proliferative agent that inhibits neointimal hyperplasia, via Sirolimus coated balloon (SCB) will be safe and will result in better arterial patency in infrainguinal peripheral arterial disease (PAD). The aim is to evaluate the efficacy (12 month freedom from clinically driven target lesion revascularisation) and safety (freedom from major adverse events) of sirolimus coated balloons in the treatment of infrainguinal PAD.

The association between obesity and cardiovascular disease (CVD) has mostly been studied using broad endpoints or have focused on cause-specific mortality. The investigators aim to compare the effect of body mass index (BMI) on different types of initial presentation of CVD.

This study is designed to develop a clinical registry of Peripheral Arterial Disease (PAD) patients undergoing lower extremity revascularization to describe the population and assess comparative effectiveness of endovascular therapy versus surgery. In addition, this study will conduct a prospective cohort study of patients treated medically or undergoing lower extremity revascularization at the VA and Kaiser Colorado to compare changes in health status.

The purpose of this study is to test a correction factor which would allow ankle brachial indexes taken in the seated position to accurately predict an ankle brachial index taken in the supine position.

In an observational multi-centre study (HEROS), the effects of starting treatment with rosuvastatin were assessed, on low-density lipoprotein cholesterol (LDL-C) goal achievement, in patients with a dissimilar high-risk profile who had not been treated with cholesterol lowering drugs at least in the past three months. Also set-up costs of rosuvastatin treatment and proportional changes in LDL-C and high-density lipoprotein cholesterol (HDL-C) were studied.

Magnetic Resonance Angiography (MRA) of the peripheral arteries has become essential in the diagnosis and follow-up of peripheral arterial disease. In clinical routine, the acquisition uses intravenous injection of a Gadolinium based contrast agent (gadolinium chelates). Initially, contrast enhanced MR angiography (CE-MRA) was recommended for diabetic patients, elderly patients and\or patients with chronic renal insufficiency presenting a contraindication to CT angiography using iodized contrast agent injection. However, the increase in nephrogenic systematic fibrosis clinical cases, which would be secondary to gadolinium chelates injection, in patients with chronic renal insufficiency has restricted the use of CE-MRA. More than 500 cases were described to date in the world. Its occurrence is currently estimated around 4 % for patients in terminal chronic renal insufficiency and its mortality around 30 %. According to the recommendations of AFSSAPS from August, 2007, two gadolinium contrast agents (Gadodiamide-OMNISCAN *, General Electric HealthCare and Gadopentetate Dimeglumine-MAGNEVIST *, Bayer HealthCare) are contraindicated if the glomerular filtration rate is lower than 30 ml/mn. Non-contrast enhanced MR angiography (NCE MRA) techniques have been proposed to provide complete and non-invasive investigation of the peripheral vasculature, from the abdominal aorta to the calf, thus offering patients with chronic renal insufficiency a surrogate with no side effects. Moreover, the use of high field (3T) MR imaging and phased array coils offers high quality images and good signal to noise ratio for peripheral vasculature analysis. Besides, the acquisition can be repeated if required as it does not require any contrast injection. The main objective is to evaluate the quality of the NCE images obtained for every investigated station from the abdominal aorta to the calf. The secondary objective is to compare the diagnostic performances of NCE images with those of CE MRA. The third objective is to estimate the contribution of automated and dedicated post-processing tools in optimizing the diagnostic quality of the images.

The purpose of this study is to assess the ability of a vascular stent to maintain an open iliac (leg) artery. The Zilver Vascular Stent is made of nitinol, a flexible metal with a long history of use in medical devices. The stent self-expands once inside the artery where it is intended to hold the vessel wall open. Within a few weeks, a layer of cells will grow over the stent helping to hold it in place.

In the first phase, to establish the relationship of progression of peripheral vascular disease (PVD) to plasma homocysteine. In the second phase, to conduct a randomized, controlled trial of folic acid treatment of plasma homocysteine in peripheral vascular disease.

The Framingham Heart Study was initiated to study the factors associated with the development of cardiovascular disease by employing long-term surveillance of an adult population in Framingham, Massachusetts. The Framingham Offspring Study was initiated to assess familial and genetic factors as determinants of coronary heart disease.

The medical device being examined in this study is the Bard® LifeStent® 5F Vascular Stent System. It is intended for use in patients who suffer from peripheral artery disease (PAD). PAD is generally associated with blocked arteries of the legs. The superficial femoral artery (SFA) and popliteal artery are common locations for this problem to develop. The patient may experience pain or discomfort in the leg that occurs when walking or have other complications associated with wound healing. The purpose of this study is to collect information to assess the deliverability, clinical utility, safety and effectiveness of the Bard® LifeStent® 5F Vascular Stent System.