Active clinical trials for "Peripheral Vascular Diseases"

The purpose of this study is to look at the safety (what are the side effects) and efficacy (how well does it work) of Magnevist (the study drug) used for MRI of the infrarenal aorta and peripheral arteries. The results will be compared to the results of MRI taken without Magnevist, and with the results of your X-ray angiography.

This is a Pilot Trial Using Chelation Therapy for Limb Preservation in Diabetic Patients with Critical Limb Ischemia.

This is a prospective, single-center, non-randomized phase 2, first-in-iliac artery study, to evaluate the safety and effectiveness of the WRAPSODY Stent Graft for the treatment of peripheral arterial occlusive disease in symptomatic subjects with de novo or restenotic lesions in the common iliac artery (CIA) and/or external iliac artery (EIA), including lesions at the aortic bifurcation.

The primary objective is to demonstrate the safety and effectiveness of the Axys EX rotational atherectomy system in subjects with peripheral arterial disease who have de novo or non-stented restenotic obstructive lesions in the peripheral vasculature of the lower limbs.

The primary aim is to assess the effects of raising HDL cholesterol (the good type) with extended release niacin/laropiprant 2g (previously known as MK-0524A) versus matching placebo on the risk of heart attack or coronary death, stroke, or the need for arterial bypass procedures (revascularisation) in people with a history of circulatory problems. The secondary aim is to assess the effects of extended release niacin/laropiprant 2g daily on heart attack, coronary death, stroke, and revascularisation separately and to assess the effects on mortality both overall and in various categories of causes of death, and of the effects on major cardiovascular events in people with a history of different diseases at the beginning of the study.

Nitric oxide has been shown to be an important regulator within the cardiovascular system, responsible for regulation of blood flow, blood pressure and vascular growth. Cardiovascular diseases show a reduced ability of the peripheral blood vessels to dilate due to decreased levels of NO with concomitant increased levels of oxidative stress, which is extremely detrimental to patients with PAD, as the limited oxygen delivery to skeletal muscles ultimately results in claudication and reduced physical ability. However, this reduced oxygen delivery and utilization may be able to be improved as previous studies have revealed that tetrahydrobiopterin (BH4), is an important cofactor responsible for NO production. Furthermore, recent studies have shown that endothelial BH4 levels are associated with the vascular pathophysiological response to hypoxia, as it directly mediates endothelial nitric oxide synthase regulation and reduces superoxide production. Additionally, acute administration of BH4 was shown to improve vascular function, specifically, endothelial mediated vasodilatory function, in patients with systemic vascular and coronary disease, as well as six minute walking distances in patients with hypertension. Therefore, the purpose of this proposed study will be to examine the effects of BH4 on vascular function, oxidative stress and leg performance in patients with PAD. This study will examine patients with a classification of stage 1 or stage 2 peripheral artery disease who demonstrate a history of exercise-limiting claudication. Blood vessel oxygen transfer capacity in the leg will be assessed in the femoral and popliteal arteries with ultrasound, and blood vessel dilatory ability will be assessed in the brachial artery with flow-mediated dilation. Skeletal muscle mitochondrial function will be measured with near infrared spectroscopy, and ROS levels will be analyzed through blood samples. Leg function will be measured with an isokinetic dynamometer.

Peripheral artery disease (PAD) affects 8-18 million in the US and is an economic burden, currently estimated to be greater than cancer and heart disease. Older age (> 65 years), smoking, diabetes and kidney diseases are some risk factors associated with PAD and are known to have increased morbidity and mortality.Early detection is critical for mitigating PAD progression. Ankle-brachial index (ABI) testing is recommended by the US Preventative Services Task Force as an affordable and effective screening tool for evaluating PAD risk. QuantaFlo™ (Semler Scientific, Inc.) is a novel, noninvasive, 510K FDA approved digital device that is used as a screening tool to measure ABI of patients at risk of PAD. This single center prospective clinical trial will evaluate the sensitivity and specificity of digital ABI in detecting PAD using color Doppler ultrasound and 'gold standard' angiography as reference. Specifically in patient undergoing dialysis and who cannot undergo ABI using pressure cuffs dialysis grafts/ fistulae in the arms, we will evaluate the value of digital ABI in detecting PAD.

The purpose of this trial is to evaluate the safety and efficacy of sonodynamic therapy (SDT) in reducing atherosclerotic plaques inflammation and increasing peak walking time (PWT) among peripheral artery disease (PAD) patients with symptom of intermittent claudication.

Study PDA-002-DFU-003 is a Phase 2, multicenter, randomized, double blind, placebo-controlled, dose range finding study in subjects who have diabetic foot ulcer (DFU) with peripheral arterial disease (PAD). The study will enroll approximately 24 subjects. This study will investigate the hemodynamic effects, clinical efficacy, and safety of 3 monthly intramuscular (IM) injections of PDA-002 in subjects who have DFU with PAD.

This is a single, one time, limited dose infusion of Paclitaxel, that will potentially prevent recurrent stenosis secondary to intimal hyperplasia when compared to the control group at 10 months.