Active clinical trials for "Peripheral Arterial Disease"

This study looks to examine whether an online patient tool to monitor factors affecting patients peripheral artery disease can lead to improvements in patients' disease and slow its progression.

This study is an intra-individual comparison of DOTAREM®-enhanced MRA and GADOVIST®-enhanced MRA in the diagnosis of clinically significant abdominal or lower limb arterial diseases.

The objective of this study is to compare remote superficial femoral artery endarterectomy with suprageniculate bypass surgery in the treatment of long occlusions of the superficial femoral artery. The study hypothesis is that patency rates are comparable and therefore the minimal invasive remote superficial femoral artery endarterectomy can be considered in patients presenting with a long occlusion of the superficial femoral artery.

The purpose of this study is to investigate the performance of paclitaxel-coated balloon expandable stainless steel coronary stent for the treatment of infrapopliteal stenoses and occlusions in patients with critical limb ischemia compared to percutaneous transluminal balloon angioplasty (PTA).

Title: How does exercise improve the calf muscle in patients with poor blood supply to their leg? Purpose of the project: Patients with peripheral arterial disease have a poor blood supply to their lower leg. The reduced inflow prevents the leg from utilising nutrients and oxygen as easily as a healthy leg would. This causes pain when walking (intermittent claudication), which often occurs after a reproducible distance e.g. every 50 yards. These patients have a reduction in their quality of life as they feel embarrassed in social situations e.g. walking around town requires multiple breaks, so they tend to avoid this and isolate themselves more. One treatment for claudication is exercising until the pain comes on; which most are reluctant to do. Walking up to three times a week for an hour, can double most people's walking distances, but doesn't always. The reason why some improve with exercise and others do not remains unknown. This project will be the first randomised controlled trial of exercise in claudicants that focuses on the adaptations that occur in the muscle at a cellular level. We wish to compare muscle cells from a group that have exercised and group that have not. We will focus on the change in muscle cell size and function at present, and later progress to why and how this happens. Methods: We will take measurements at the start of the study (baseline), after 6 weeks and then 3, 6 and 12 months. These measurements will be of a patient's fitness, actual walking distances and blood samples. At the time of surgery, muscle from the calf will be taken from the affected leg. This will be processed at the University's biomedical science department to look at the different types of muscle fibre and how efficiently they are working.

This is the second part of a research study in order to determine if using a specialized pulse oximetry probe with external heat pack will help obtain oxygen saturation (SaO2) and heart rate (HR) during monitoring for patients with peripheral vascular disease (PVD), vasoconstriction, and hypothermic extremities. The inability to obtain accurate SaO2 and pulse readings can lead to misdiagnosis, incorrect treatment, or procedures to be canceled. SaO2 and pulse readings are important to maintain patient stability during diagnostic testing, surgical procedures and monitoring while in critical care areas. Changes in SaO2 and pulse are important to monitor in order to be able to compensate for any decrease in patient oxygen saturations during hemodynamic monitoring. The primary aim of this study is to determine if using a specialized pulse oximetry probe with external heat pack will improve oxygenation readings in order to obtain SaO2 and pulse readings in patients with PVD, vasoconstriction, and hypothermic extremities as compared to readings obtained from an arterial blood gas. The hypothesis is using a specialized pulse oximetry probe with external heat pack will help obtain more accurate pulse oximetry readings consistent with values obtained with an arterial blood gas.

BIOFLEX-I EU is the European arm of the BIOFLEX-I IDE study (NCT01319812). Data from BIOFLEX-I EU will be pooled with data in the IDE. The objective of this study is to separately demonstrate the clinical performance of BIOTRONIK's Astron and Pulsar-18 stents in the European arm of the BIOFLEX-I IDE (NCT01319812). The Pulsar-18 stent will be used for the treatment of femoro-popliteal lesions, located in the native superficial femoral artery (SFA) or proximal popliteal artery (PPA), while the Astron stent will be used for the treatment of the common or external iliac artery lesions.

The particular aim of this study is the comparison of the diagnostic results of MRA images upon application of Vasovist (gadofosveset), a contrast agent not yet available on the market, with the MRA images upon application of a conventional extracellular contrast agent. A catheter angiography, which will be performed as a routine diagnostic procedure for vascular diseases, will serve as an evaluation standard.

The purpose of this study is to determine whether 12 weeks of daily home use of the FM220 in the most affected leg of patients with PAD and claudication, will improve peak walking time (PWT) at three months as compared with a non-treated control group.

This is the first clinical research trial in which intravenous Prostaglandin E1 (PGE1 is a vasoactive hormone) will be used as supportive treatment along with the angioplasty procedure to treat or open up a blocked artery within one lower limb or the most affected of two limbs in subjects with Peripheral Arterial Occlusive Disease.