View clinical trials related to Stenosis.
Filter by:The primary objective of this study is to evaluate the safety and performance of the Modulus ALIF System in patients undergoing anterior lumbar interbody fusion (ALIF) as measured by reported complications, radiographic outcomes, and patient-reported outcomes.
This is a monocentric randomized prospective trial comparing 2 different endovascular strategies of intracranial arterial angioplasty in case of refractory intracranial arterial vasospastic stenosis : - chemical angioplasty - chemical and mechanical angioplasty
The aim of this study was to evaluate asymptomatic superior mesenteric artery (SMA) stenosis prognosis according to the presence of coeliac artery (CA) and/or inferior mesenteric artery (IMA) associated stenosis.
For patients with End Stage Renal Failure (ESRF), the surgical creation of an Autogenous Arteriovenous Fistula (AVF) or Autogenous Arteriovenous Graft (AVG) is the recognised standard for providing vascular access. A functioning dialysis vascular access is essential to facilitate hemodialysis (HD) treatment. Advantages include improved hemodialysis initiation time, improved dialysis quality, better maintenance of accesses and generally, better outcomes in patients. Unfortunately almost 50% of AVF and AVG fail after a median lifetime of 3 to 7 years and 12 to 18 months respectively. Vascular access dysfunction is a major cause of morbidity and hospitalisation for ESRF patients, costing the healthcare system USD 18 million globally. Venous stenosis and scarring are caused by trauma from surgical access creation when the circuit comes arterialized and from repeated percutaneous punctures from subsequent hemodialysis. This study is performed to evaluate Sirolimus-coated balloon efficacy and safety using MagicTouch™ Drug coated balloon catheter (Concept Medical Inc, Tampa, FL, US) on AVF patency with de novo and recurrent stenosis.
Spanish registry of resorbable stent implantation in biliary benign strictures. This registry is sponsored by the Spanish Society of Vascular and Interventional Radiology (SERVEI) and conducted by the Research Group GITMI (Group of Research in Minimally Invasive Techniques) of the University of Zaragoza (Spain). A software tool hosted on the official website of SERVEI and the journal Intervencionismo will be used for data collection a(https://estudios.watsoncme.com).
Patients with peripheral artery disease will be treated with either drug coated balloon catheter, drug coated stent or uncoated stent.
Our hypothesis is that a plasma protein named osteopontin (OPN) could serve as a biological predictive marker of acute AVF dysfunction. In several scientific studies, plasma OPN was correlated with coronary stent restenosis, and with cardiovascular outcome in patients with diabetes and renal insufficiency. This protein is secreted by several cellular types, like distal tubule epithelial cells, macrophages, but also fibroblasts and cardiac and vascular endothelial cells, in response to several specific stimuli. It acts like a cytokine, inducing immunological mechanisms as well as tissue remodeling. The main objective of this study is to show that the amount of plasma OPN is higher in patients presenting with an AVF stenosis, compared with patients with a functioning AVF. OSMOSIS is a monocentric pilot study that will include patients into two groups during 12 months (no specific follow-up). The control group will include patients that have been dialyzed on an AVF, in the dialysis center of Nice University Hospital, for at least 3 months without any incident. The experimental group will include hemodialysis patients hospitalized in the department of vascular surgery for acute AVF dysfunction, needing endovascular or open surgical revision for venous stenosis. Blood will be withdrawn right before dialysis or surgical procedure. Plasma OPN will me measured by ELISA. Their clinical data would be collected from medical file at the same time. After the procedure, patients will be followed-up according to usual protocols. To show a significant difference of 100ng/mL plasma OPN between the two groups, with a power of 90% and alpha risk of 0.05, we plan to include 76 patients
This study aims to assess the device success and the safety of Medinol's Drug Eluting Stent - BioNIR - with a modified delivery system. The BioNIR Ridaforolimus Eluting Coronary Stent System is a single use device/drug combination product comprising: - A mounted Cobalt Chromium (CoCr) alloy based stent - A Rapid Exchange (RX) delivery system - A polymer matrix coating - Poly n-butyl methacrylate (PBMA) and CarboSil® - Ridaforolimus drug - CAS Registry Number: 572924-54-0 It is indicated for improving coronary luminal diameter in patients with symptomatic heart disease due to lesions in vessels with reference diameters of 2.5 mm to 4.25 mm, including complex lesions.
The objective of this study is to assess the safety and effectiveness of the COVERA™ Vascular Covered Stent for the treatment of stenotic lesions in the upper extremity venous outflow of the Arteriovenous (AV) access circuit.
The objective of this study is to assess the safety and effectiveness of the COVERA™ Vascular Covered Stent for the treatment of stenotic lesions in the upper extremity venous outflow of the Arteriovenous (AV) access circuit.