View clinical trials related to Renal Artery Stenosis.
Filter by:Two investigational chemical tracers, 62Cu-ethylglyoxal bis(thiosemicarbazone) (62Cu-ETS) and 15O-water, will be used in this study to look at how blood moves through the kidneys. The purpose of the study is to see if 62Cu-ETS is effective in showing the blood supply to the kidneys compared to 15O-water. The tracer mixes with the blood and moves through the body. Using positron emission tomography (PET scan) the researchers can see the tracer and can learn more about how the blood moves through the kidneys. The study invites participants who are healthy, without any heart or kidney disease, patients who have kidney disease that require dialysis, and patients who may have a blockage in one of the arteries supplying blood to the kidneys.
The clinical investigation is a prospective, international, multi-centre, randomized (1:1) trial with follow ups at 2, 6, 12 months and 3 years. The purpose of the study is to evaluate the clinical impact of percutaneous transluminal renal artery stenting (PTRAS) on the impaired renal function measured by the estimated Glomerular Filtration Rate (eGFR) in patients with hemodynamically significant atherosclerotic renal artery stenosis (ARAS).
The purpose of the study is to evaluate the safety and effectiveness of the Formula Balloon-Expandable Stent in treatment of renal artery stenosis.
The purpose of this study is to look at the safety (what are the side effects) and efficacy (how well does it work) of Magnevist (the study drug) used for MRI of the renal arteries. The results will be compared to the results of MRI taken without Magnevist and with the results of your X-ray angiography.
The primary objective of this study is to compare the safety and performance of the Palmaz Genesis™ balloon expandable stent, with or without sirolimus coating in the treatment of renal artery stenosis, measured at 6 months follow up via angiography.
This study is designed to demonstrate the safety and efficacy of using a protective device/drug to prevent renal injury during renal artery stenting and to assess whether the preventative effects are measurable and if there is a differential treatment effect for either device alone or in combination.
Magnetic Resonance Angiography (MRA) is an examination similar to Magnetic Resonance Imaging (MRI) which uses a magnetic field and a contrast medium when needed to visualize blood flow in the arterial vessels throughout the body. Gadodiamide, a contrast medium, is already approved and is used to image blood vessels by directly injecting it into the vein, but this procedure has not been formally tested to image the renal artery vessels using MR. The study is designed to determine the presence or absence of a relevant stenosis (ie greater than/equal to 50%) or occlusion in renal arteries. Intra-arterial Digital Subtraction Angiography will be used as the standard of truth.
In this study researchers will admit and evaluate patients with known or suspected heart disease referred to the Cardiology Branch of the National Heart, Lung, and Blood Institute (NHLBI). Patients participating in this study will undergo a general medical evaluation, including blood tests, urine, examination, chest x-ray and electrocardiogram (EKG). In addition, patients may be asked to have an echocardiogram (ultrasound scan of the heart) and to perform an exercise stress test. These tests are designed to assess the types and causes of patient's heart diseases and to determine if they can participate in other, specific research studies.