Active clinical trials for "Peripheral Vascular Diseases"

The presence of foot symptoms at rest or tissue necrosis in patients with peripheral artery disease is a medical urgency and represents a state of critical limb ischemia (CLI) where the risk of amputation, in the absence of revascularization, is high. No trial conducted to date in peripheral revascularization has determined the effect of diabetes on mechanism of revascularization failure. Therefore, this trial represents a unique opportunity to investigate the mechanisms by which diabetes affects surgical and endovascular revascularization procedures with the long-term goal of improving outcomes in CLI.

Since the length of lesion seems to be negatively associated with stent patency due to restenosis, it is thought that the efficacy of treatment in patients with multiple (> 1) short (focal; > 1 and < 5 cm) SFA lesions can be improved by spot stenting as compared to the use of one long stent. This study proposes to evaluate the endovascular treatment for patients with SFA lesions by comparing two strategies for patients with extensive occlusive SFA disease; 1) short spot (SS) stenting or 2) long lesion (LL) stenting.

This is a prospective, nonrandomized, single-arm study using CSI Orbital Atherectomy System in patients with PAD (total occlusions or significant stenosis). Patients will be enrolled if they have claudication and/or critical limb ischemia, and identifiable PAD disease with moderate to severe calcification on Computer Tomography Angiogram (PCA) or peripheral angiogram requiring percutaneous peripheral intervention (PPI).

This is a multi-center, clinical pilot-study of ProEndoTecc Vascular Grafts (6, 7 or 8 mm Diameter) as superficial femoral artery bypass/interponate. The aim of this study is to demonstrate safety of implantation, patency and durability of a new type of vascular graft.

The purpose of this study is to assess the safety and feasibility of HBOC-201 in increasing adequate wound healing in patients with severe peripheral vascular disease who are undergoing lower limb amputation. The hypothesis is that HBOC-201 will pass through the partially occluded lesions in the peripheral arteries in the lower extremity and promote the wound healing process by delivering oxygen to the oxygen deprived tissues. This will reduce the incidence of lower limb wound complications at 60 days post-surgery and may reduce the incidence of a second amputation.

The purpose of this study is to assess and compare the safety of continuous and daily subcutaneous Remodulin therapy in patients with critical limb ischemia (CLI) with no planned vascular interventional procedures; and to determine the effect of Remodulin on wound healing and treadmill walk distance.

Ecraprost in lipid emulsion is being developed for the treatment of Critical leg ischemia (CLI), which is the most severe form of peripheral arterial disease (PAD). This trial is designed to assess the efficacy and safety of the drug in the treatment of CLI.

The superficial femoral artery (SFA) is frequently involved in atherosclerosis and is the most common target of lower extremity endovascular procedures performed in patients with claudication. Endovascular treatment of SFA is challenging, given its exceptional predisposition to atherosclerosis and its exposure to extreme mechanical forces of extension, compression, torsion and flexion. The SFA is located in a fibro-muscular canal, follows a tortuous course and is considered a 'hostile' location for endovascular procedures, especially stents due to the risk of stent fracture. On the other hand, durability of balloon angioplasty in the SFA is dismal (25% patency at 1 year). Therefore, Nitinol (a metal alloy of nickel and titanium) stent implantation is the mainstay of endovascular SFA interventions when balloon angioplasty (PTA) leads to sub-optimal results during a procedure. It is used in over 70% of all cases and in nearly 100% of all femoro-popliteal (FP) CTO (chronic total occlusions) and long (≥60 mm) interventions. Endovascular treatment of SFA is challenging and restenosis is the most common cause for the lack of durability of a SFA peripheral vascular interventional procedure.5 Restenosis rates of SFA bare metal (nitinol) stents or BMS at 1 year exceeds 50% for lesions ≥60 mm in length or CTO. Stent based treatment of the SFA may not offer any additional advantage for short non-CTO (<60 mm) lesions compared to PTA. In a recent study, primarily comparing drug-eluting stents (DES) to balloon angioplasty in the SFA, 12 month patency rates were 83.1% and 32.8%, respectively for DES and balloon angioplasty arms. However, there are no head-to head studies randomized studies comparing DES and BMS in the SFA. Thus, endovascular SFA intervention in patients with symptomatic PAD is an area of urgent need for high-quality evidence as volume of these procedures continues to rise exponentially in the U.S. and around the world, largely on the basis of insufficient evidence.Thus, the purpose of this study is to conduct a randomized pilot trial comparing DES and BMS for percutaneous revascularization of SFA.

The purpose of this study is to identify the type of patients being referred for the Vascular Rehabilitation Program (VRP) and to study the success rates of the program according to improvements in walking distance and quality of life surveys. Subjects will be in the VRP for 6-12 weeks and then be followed for 12 months after they complete the program. This is a single-site study at Baylor Scott & White Heart Hospital-Plano.

The study will evaluate the safety and efficacy of Peripheral Intravascular Lithotripsy system with Shockwave S4 catheter® for the treatment of de novo, re-stenosis or re-occlusive,calcified chronic total occlusion (CTOs) lesions in patients with Critical Limb Threatening Ischemia (CLTI).