Active clinical trials for "Peripheral Arterial Disease"

This study represents an important step to validate the use of contrast-enhanced ultrasound (CEU) as a clinical research tool that can be used as a biologic readout of new therapies for Peripheral Artery Disease (PAD), and as a clinically-reasonable method for assessing impact of revascularization. The primary aim is to establish that CEU limb perfusion imaging can be used to accurately assess therapeutic improvements in tissue perfusion that are linked to symptom improvement.

The peripheral artery disease (PAD) prevalence is high in the elderly, the diabetic patients, and the patients receiving hemodialysis. To date, there is no guideline recommendation on the screening of PAD in patients admitted to the medical intensive care unit (MICU) for sepsis. We conducted a prospective cohort study focusing on patients admitted to the MICU with the main diagnosis of sepsis. The ankle-brachial indexes are performed within 24 hours after admission. Invasive arterial line monitoring and standard non-invasive measurements are collected. After confirmation of PAD, standard anti-platelet treatments (aspirin and cilostazol) are initiated. The survival before and after the conduction of this trial is compared to historical records. The outcomes including all-cause mortality, stroke, myocardial infarction, minor amputation, major amputation, and prolonged ventilator dependent are to be collected.

We conducted Single-center prospective observational study to evaluate the improvement of peripheral vascular perfusion monitored with near-infrared spectroscopy, in patients undergoing endovascular surgery after performing sciatic nervous block.

Given that previous studies demonstrated the feasibility of the required MRI techniques, we propose to study the macro- and microvascular adaptations in PAOD patients undergoing supervised exercise therapy. It is expected to provide valuable insights into the contribution of each vascular mechanism to the rehabilitation and to identify which vascular mechanism fails or is insufficient for a successful rehabilitation. Improvement of future treatment requires the identification of relevant adaptive mechanisms. With this we will provide early noninvasive MRI readout tools to diagnose and monitor the potential rehabilitation during any form of therapy for PAOD that affects the peripheral vasculature.

Continuous Doppler ankle brachial index (ABI) is the gold standard for screening and monitoring of peripheral arterial disease (PAD) but is no longer carried out in clinical practice. The recommended measurement was gradually replaced by colour or pulsed Doppler without validation of these techniques. The objective of our study is to compare these two techniques (color Doppler and pulsed Doppler in echodoppler) with respect to the gold standard (continuous Doppler) for ABI measurement.

This proposed study will be conducted to support real-world-evidence on the extent of best medical treatment for secondary prevention of patients with symptomatic peripheral arterial occlusive disease (PAOD) for prevention of worsening limb symptoms or of major adverse cardiovascular events. The overall objective of this study is to gain a better understanding of patient characteristics, treatment patterns and outcomes in PAOD patients. For this purpose the investigators will analyze a patient population hospitalized either with intermittent claudication (IC) or chronic limb-threatening ischaemia (CLTI) while taking prior PAOD-related diagnoses in the outpatient setting into account. In detail, we study differentials according to age, calendar time, sex, disease severity and hospital procedure. Data were extracted from available German health insurance claims.

The Cheetah NICOM is a non-invasive cardiac output monitor that has been validated in various clinical contexts but not during the occlusion of major arteries, as takes place in vascular surgery. The present study will evaluate the precision and validity of the measures taken by the device during open vascular surgery procedures. The measurements will be compared to the those calculated by transesophageal echocardiography at various key points during the surgeries. The validity of the cardiac output, stroke volume and stroke volume variation measurements will be evaluated, as well as the device's ability to track rapid changes in cardiac output.

This study is designed to test two hypotheses: The PADnet+ testing system produces clinically equivalent results as the Parks Flo-Lab testing system in a group of patients referred for evaluation of PAD of the limbs when performed by a Registered Vascular Technologist (RVT). The PADnet+ testing system produces clinically equivalent results when the testing is repeated on the above patients and performed by staff specifically trained on the use of the PADnet+ system but are not vascular technologists nor hold the RVT certification.

Lower extremity peripheral artery disease (PAD), the third leading cause of atherosclerotic cardiovascular morbidity following coronary artery disease and stroke, affect 200 million people worldwide and is associated with high rates of cardiovascular events and death. Consensus is reached on an "endovascular-first-strategy" for symptomatic PAD who have developed critical limb ischemia. However, the challenge of endovascular therapy is the long-term patency, and the associated worse clinical outcomes, including higher rates of major adverse cardiovascular events, and major adverse limb events. Meta-analysis concluded that restenosis occurred rate 5-70 % at 1 year; the incidence of adverse limb outcomes, (including worsening of symptoms, the need for peripheral revascularization, and amputation) was 26% over a period of 4 years; Cardiovascular morbidity and mortality up to 28 % after endovascular therapy. There are no consensus guidelines on the optimal timing and the factor on adverse clinical outcome remains uncertain. Therefore, the purpose of this study is to conduct a structured surveillance plan for follow-up care and evaluate risk factors that will eventually support development of a predictive model for clinical outcomes of endovascular procedures to treat lower extremity PAD.

This study aims at evaluating the correlation between foot perfusion on angiographies performed before and after revascularization and limb salvage in patients with critical limb ischemia.