Active clinical trials for "Vascular Diseases"

This is a single-arm, single-center, open-label, pilot study . 30 subjects with foot symptoms attributable to diabetes or peripheral vascular disease will be screened . Subjects meeting inclusion criteria will sign informed consent and enrolled. All 30 subjects will be treated with the Magic Foot™. If there is any significant improvement in ICG or foot symptoms as obtained from self evaluation questionnaire, a further 30 subjects will be enrolled.

Obtaining peripheral vascular access in medical patients is a necessary procedure for many healthcare providers. Peripheral vascular access is traditionally performed using palpation or visual inspection to identify appropriate points of entry in the vasculature after which a needle and catheter are threaded through the skin and surround fascia into the vessel of interest. This procedure, one of the most common procedures in the medical field including both artery and vein access, is not 100% successfully attempted. Operator skill heavily influences peripheral vascular cannulation. (Frisch et al. 2013) However, certain patient populations have difficult peripheral vessels to identify by palpation or visual inspection and past operators would be forced to perform the procedure blind based on anatomical landmarks. Recently, to aid vascular identification and increase cannulation success, a number of alternative techniques for peripheral vascular access have been described including ultrasound-guided. Ultrasound-guided vascular access has been utilized in vascular access with improved success rate. However, even with ultrasound guidance the first attempt success rate of cannulation was only approximately 65%. A proposed failure of ultrasound guided peripheral vascular access is most likely due to failure to advance the catheter into the vessel even the vessel was successfully punctured. The investigators propose a specific technique and the positive "Target Sign" as a means to obtain almost 100% successful peripheral vascular access. The investigators plan to enroll 100 surgical patients in the above study and study procedures will not differ from what a patient in the operating room under the care of anesthesia faculty would receive. The above study is simply a way to identify the steps regarding a specific technique.

Abbott Vascular (AV) obtained marketing approval for the XIENCE PRIME Everolimus Eluting Coronary Stent System (XIENCE PRIME EECSS) in China from the China Food and Drug Administration (CFDA) on August 10th, 2011. This prospective, observational, open-label, multi-center, single-arm, post-approval study is designed to evaluate the continued safety and effectiveness of the XIENCE PRIME EECSS in a cohort of real-world patients receiving the XIENCE PRIME EECSS during commercial use in real-world settings in China. This study has no primary outcome measure. All observations are of equal weight.

Mortality in the major thrombotic microangiopathies (TMAs), TTP and aHUS, exceeds 90% unless rapidly diagnosed and appropriately treated. TMAs complicate 10-20% of allogeneic bone marrow hematopoietic stem cell transplants (alloHSCT), conveying inferior survival. Multiple etiologies have been proposed for these transplant-associated TMAs (TA-TMAs), but once infection, graft vs. host disease (GvHD), and drug effects have been ruled out, most are treated as TTP-like disorders using plasma exchange (PEx). But PEx has no impact on mortality in this setting. Clear definition of the pathophysiology of the TA-TMAs is required to guide effective treatment. Investigators hypothesize that an aHUS-type TMA, related to dysregulation of the alternative complement pathway, is involved and will be characterized by elevated plasma levels of C5b-9 and detectable C5b-9 deposition in bone marrow sinusoidal vessels. Investigators further hypothesize that treatment with inhibitors of terminal complement components will reverse the TMA in vivo, and block endothelial cell damage in our in vitro model systems. The data investigators generate from this observational study of TA-TMAs should enable prediction of their development prior to overt clinical manifestations, and guide appropriate therapy.

The investigators ultimate goal is to personalize brain stimulation for stroke so outcomes of the upper limb can be maximized for each individual patient. Several groups including the investigators have recently theorized that personalizing stimulation so as to selectively stimulate iM1 in mild, and cPMd in patients with greater severity would help generalize benefits of stimulation. The investigator premise that variances in expressions of plasticity can explain how to best stratify patients for robust, personalized stimulation.

A prospective, single-center, real-world study on intravascular ultrasound measurements after percutaneous transluminal angioplasty and stenting in the treatment of femoropopliteal lesions.

Chronic kidney disease (CKD) is associated with an extensive vasculopathy and high cardiovascular mortality as well as an accumulation of uremic toxins. Among the latest, advanced glycation end-products (AGEs) interact with RAGE. Investigators aimed to analyze the role of RAGE in the calcification process of hemodialyzed patients, in a correlative and prospective study. Vascular calcifications will be assessed by Xray and tomodentimetry while accumulation of AGEs will be measured in the serum and in the skin (non invasive). Additionally factors influencing RAGE activation such as genetic polymorphism and level of soluble forms of RAGE will be measured and analyzed.

This two-year pilot study will test whether a one-page "Jumpstart Form" will affect goals-of-care discussions in the hospital. This form will be provided to clinicians and will include patient-specific information about preferences for goals-of-care communication and for care, as well as tips to improve this communication. Jumpstart forms will also be provided to patients or, if they are unable to communicate, their surrogates/family members. The information on the form will be obtained from questionnaires. The form is tailored to help patients and surrogates talk with clinicians about goals of care. This study is based on a successful application of Jumpstart Form in the outpatient clinic setting.

Many patients who undergo vascular surgery to improve the blood flow to their legs are at risk of developing an infection in the surgical site and are then at risk of serious complications such as hospital readmission, failure of the surgical procedure and lower limb amputation. Surgical site infections may be reduced in high-risk patients by applying two commonly used antibiotics (gentamicin and vancomycin) into the surgical incision at the end of the surgical procedure. This will be compared to the standard of care treatment at London Health Sciences Center.

Among patients who are receiving long-term anticoagulant therapy, whether with a direct oral anticoagulant (DOAC) or vitamin K antagonist (VKA), approximately 3-5% who require treatment interruption for a surgery will do so in an urgent/emergency surgery setting. Additionally, there is considerable morbidity and mortality associated with DOAC/VKA management in an urgent/emergency surgery setting. Thus, this prospective registry study aims to identify and compare determinants for perioperative adverse events in DOAC-treated and VKA-treated patients who require an urgent/emergency surgery, and to identify which of these are modifiable. It also aims to describe and compare management of anticoagulant reversal (i.e., non-specific and specific reversal agents) and resource utilization (i.e., blood transfusion) in DOAC- and VKA-treated patients who need an urgent/emergency surgery.