Active clinical trials for "Intermittent Claudication"

Subjects with a known diagnosis of peripheral artery disease as measured by an abnormal ankle brachial index (<.9 or >1.1) will undergo a single 5 min exposure of 670 nm light, 1 cm above the gastrocnemius muscle. Blood flow will be measured by infusion of ultrasound contrast and subsequent acquisition of ultrasound images. 2 blood samples will be collected for measurement of nitric oxide metabolites.

VascTrac is a mobile medical application that tracks users' physical activity levels in order to predict endovascular failure of patients with Peripheral Artery Disease.

The most common clinical presentation of lower extremity arterial disease is intermittent claudication. Current understanding of the pathophysiology of intermittent claudication, as well as its treatment options are limited. The progression of the disease may lead to lower limb amputation, which is devastating for patients' quality of life and is a huge socio-economic burden to society. Current study allows to determine the acute local metabolomic alterations in the ischaemic limb of the patient with intermittent claudication, and investigate the associations between the metabolomic alterations and the patient's maximal walking distance. This provides potentially valuable insight into the pathophysiology of this disease, and helps lay the groundwork for identifying potential novel targets for instituting more effective therapies for this high-risk population.

This study is a 3-month, prospective, randomized controlled clinical trial designed to address the efficacy of the Non-Ischemic Exercise (NICE) program to improve exercise and vascular outcome measures in patients with peripheral artery disease (PAD).

Post-thrombotic syndrome (PTS) is the most frequently observed chronic complication of deep vein thrombosis (DVT), with an estimated cumulative incidence of 20-50%. Endovascular venous recanalization with angioplasty and stenting of obstructive lesions is the recommended treatment option to reduce or correct the symptoms of DVT. However, its impact on the physical capacity and breathlessness of patients has not been fully demonstrated. The heterogeneous evidences of clinical improvement is probably related to the presence or absence of collateral veins developed in these patients with proximal venous obstruction (iliac or iliofemoral with or without inferior vena cava involvement), which ensure the cardiac venous return. The aim of this study is to compare changes in maximal oxygen uptake after endovascular venous recanalization in DVT patients and to evaluate the hemodynamic, respiratory and muscular improvement induced by the restoration of venous flow in the occluded segments.

Peripheral artery disease (PAD) is characterised by a build up of fatty plaque in the arteries in the lower limbs, resulting in a reduction of blow flow to the muscles. Globally, it is estimated that 236 million people are living with PAD. A classic symptom of PAD is intermittent claudication (IC) which is characterised by muscle cramps in the lower limbs, typically brought on by exercise and relieved at rest. Exercise is recommended at first line treatment for IC. However to assess IC symptoms in response to an exercise study, maximal walking capacity (the furthest they can walk before it becomes too painful to walk) is typically the main measure. A patients walking capacity is assessed by a number of exercise testing protocols including the six-minute walk test (6MWT), where patients walk for six minutes with the aim to walk as far as they can in the time allotted. Patient encouragement has been shown to improve walking performance by as much as 30 meters in heart failure and respiratory disease populations. However the effect of encouragement on walking performance in people with IC is yet to be studied.

This study is a 3-month, prospective, randomized controlled clinical trial designed to address the efficacy of the DASH dietary program combined with a home-based exercise program, quantified by a step activity monitor, to improve exercise and vascular outcome measures in patients with PAD.

The aim of the proposed study is to define independent parameters for the diagnostic assessment of the perfusion situation of the calf muscle based on 3D-reconstruction of multispectral optoacoustic tomography (MSOT) in a cross-sectional collective of patients with PAD in Fontaine stage II and a healthy control group.

The objective of the proposed study is to define independent parameters for the diagnostic assessment of the perfusion situation of the calf muscle based on multispectral optoacoustic tomography (MSOT) in a cross-sectional collective of patients with PAD in Fontaine stage II (intermittent claudication) and a healthy control collective (study group 1). The results will be validated using an independent validation group (study group 2).

The goal of the proposed pilot study is to evaluate the feasibility of a new leg heat therapy system treatment for patients with lower extremity PAD. The new system is comprised of leg-length water circulating pads surrounded by a separate pneumatic compression outer garment that compresses the pads against the skin for efficient heat transfer. The new leg garment is easily closed with a zipper. The air chambers automatically adjust the amount of air inflation enabling use of the garment independent of patient leg size. Six patients with PAD will be asked to complete daily (90 min/day) home-based leg HT for 12 weeks using the newly developed system. The primary study outcome is the change from baseline in walking performance on the 6-minute walk test at the 12-week follow-up. Secondary outcomes include plantar flexion power, as assessed using isokinetic dynamometry, sit-to-stand muscle power and perceived quality of life.