Active clinical trials for "Ischemia"

This is a prospective, randomized, placebo-controlled, double blind safety and efficacy clinical trial.

The purpose of the study is to assess the safety and efficacy of targeted intramyocardial delivery of Auto-CD34+ cells for increasing exercise time and amelioration of anginal symptoms in subjects with refractory angina and chronic myocardial ischemia.

Regeneration of the occluded peripheral arteries by autologous stem cell therapy is an emerging treatment modality for no-option patients with peripheral artery disease (PAD). The purpose of this study was to assess safety and efficacy of ex vivo expanded, peripheral blood-derived, autologous angiogenic cell precursors (ACPs) in no-option PAD patients.

Recurrent stroke and cognitive decline are common after ischaemic stroke. Allopurinol, a drug usually used to treat gout, has been shown to reduce heart ischaemia, heart size, and arterial stiffness and to relax brain blood vessels and may reduce the blood pressure. All of these properties may be associated with a lower risk of second stroke and cognitive decline. We now aim to explore whether allopurinol will reduce further damage to the brain (called white matter hyper-intensities) after stroke and also whether it reduces heart size and blood pressure after stroke. We will conduct a multi-centre randomised, double-blind placebo controlled study to investigate whether two years allopurinol 300 mg twice per day (BD) improves these 3 outcomes, which are inextricably linked to risk of recurrence and cognitive decline after ischaemic stroke.

This is a multi-center, safety and tolerability study in subjects with chronic stable sensorimotor deficits after ischemic stroke. It has been designed as a double-blind, placebo-controlled, 2-period crossover study.

The purpose of this study is to evaluate the use of radial strain imaging using speckle tracking analysis to predict the response to CRT in patients with ischemic cardiomyopathy (ICMP) with NYHA functional class 2-4 heart failure and a standard guideline-based CRT indication. Thus assessing the value of lead localization determined by radial strain imaging in a prospective, randomized manner.

The purpose of this study is to determine if a medication called mannitol, can help the kidney maintain its function after kidney surgery. Mannitol is used to cause an increase in urine production (it is a diuretic). For many years, mannitol has been given to patients in the hope it would improve the kidney's circulation, and in doing so reduce the impact of the surgery on the kidney. Mannitol is given during the surgery before the blood supply to the kidney is stopped. The blood supply to the kidney is stopped in order to minimize any blood loss during the removal of the tumor, and also to assist the surgeons view of the kidney anatomy. Once the tumor is removed the blood supply to the kidney is resumed. Sometimes a side effect of this temporary reduction in blood supply to the kidney is the loss of some kidney function. This may happen either in the short term (right away) or long term (months or years later). In studies done on animals, mannitol was able to lessen this damage to kidney function. However, no human study has ever confirmed that mannitol has the same helpful effect in humans. There is some suggestion that it may have no effect. Because sufficient research has yet to be done on humans, many surgeons do not give mannitol. A recent study, conducted at Memorial Sloan Kettering which looked back at patients who had undergone partial nephrectomies, an operation where only the portion of the kidney that contains the tumor is removed and enables the normal, unaffected portion of the kidney to be preserved. The results of this study demonstrated no significant difference in kidney function when the investigators compared patients who were given mannitol to those who were not. The investigators hope that this study will help clarify the effectiveness or not of mannitol on kidney function. During the surgery to remove the kidney tumor, patients will receive either mannitol or a placebo. A placebo, is a harmless medication that has no effects. The impact of mannitol compared to the placebo will be assessed by routine blood tests and imaging (kidney scan) 6 months after your surgery.

To establish the safety and efficacy of the commercially approved XIENCE Family Stent System (inclusive of XIENCE PRIME, XIENCE V, XIENCE Xpedition and XIENCE PRO [for use outside the United States [OUS] only]) in subjects with unprotected left main coronary artery disease by comparing to coronary artery bypass graft surgery.

A total of 90 patients suffering from end stage-IV Fontaine /CLI and diabetic foot with an ulcerated limb in whom all previous therapeutic strategies failed (e.g. surgical revascularization) will be selected and undergo local transplantation of ABMSCs. The efficacy/safety of this therapy will be assessed by using several endpoints such as (a) prevention of amputation, (b) wound healing and (c) degree of angiogenesis. In order to assess the limb ischemia and hypoxia the several tests and measurements will be performed pre- and post transplantation at a variety of time intervals. The measurements include: TP-toe pressure measurements (by Periflux 5000 Laser Doppler and Oxymetry system), SPP-skin perfusion pressure, ABI-ankle brachial index, LDP-laser Doppler baseline and heat perfusion assessment, TcpO2 without and with O2 provocation inhalation test. In addition, a battery of biochemical and hematological tests of peripheral venous blood sample will be performed.The quality form "EQ-50" will be completed. 8.1 Primary objective: To evaluate an efficacy-safety profile of autologous bone marrow stem cells (ABMSCs) transplantated into chronically and critically ischemic limb (CLI) and into diabetic foot in stage IV Fontaine, Rutherfod 4-6 classification. 8.2 Secondary objectives: 8.2.1 To assess effect of ABMSCs on tissue perfusion of ischemic limb after transplantation by transcutaneous oximetry and the laser Doppler flowmetry using Periflux 5000 system under normal and provocation test conditions. In addition, wound healing of ulcers will be evaluated using a planimetry method from photographs of affected skin taken pre- and post-transplantation. 8.2.2 Relationship between CD 34 progenitor counts separated on gradient-density separation centrifuge from Harvest Technologies and overall effectiveness and safety to treat ischemic limb. 8.3 Priorities: Beside assessment of effectiveness and safety of ABMSCs transplantation ultimate emphasis will be put on avoiding limb amputation. This has significant socioeconomic impact. Therefore this project belongs to the priority programs of clinical research in cardiovascular diseases.

The objective of this study is to evaluate the safety and effectiveness of the clinical and technical performance of the CorPath® 200 System in the delivery and manipulation of coronary guidewires and stent/balloon systems for use in percutaneous coronary interventions (PCI).