View clinical trials related to Constriction, Pathologic.
Filter by:This study will be a multicentre randomized controlled trial to assess the efficacy between balloon dilatation and self-expanding metallic stent placement for endoscopic treatment of stenosis in Crohn´s Disease.
Intracranial atherosclerosis is common vascular lesion in Asian acute stroke patients and intracranial atherosclerosis patients have high rate of coronary artery disease (CAD). Moreover, several studies showed obvious association of CAD and cerebrovascular stenosis, which had been proved to increase the risk of stroke after coronary revascularization including coronary bypass surgery or percutaneous coronary intervention. In addition, the efficacy and safety of combined coronary and cerebral intervention are not fully investigated. Hence, the aim of this study is to evaluate the prevalence and characteristics of coronary and cerebrovascular arteriosclerosis as measured by combined coronary and cerebral angiography, explore the relationship between inflammation, atherosclerosis-related markers and coronary and cerebral atherosclerosis and compare the efficacy and safety of simultaneous or staged coronary and cerebral interventional strategy in Chinese Patients. The coronary angiography and cerebrovascular angiography are performed for all participants. The combined strategy for coronary and cerebrovascular angiography is carried out routinely in the investigators institutions. Simultaneous strategy is considered as that performed via the same access and within the same day. Staged strategy is intended as that performed within 7 days from the first procedure. The sequence of angiographies is established on an individual patient basis by the cardiovascular and neurointerventional team according to clinical symptoms of the patients and after coronary or cerebrovascular angiography. After combined coronary and cerebral angiography, simultaneous or staged interventional strategy will be performed in patients with severe coronary and cerebral stenosis. Blood sample is obtained from artery sheath when performing coronary or cerebral angiography. Lipid levels, inflammation and atherosclerosis-related markers will be measured in this study.
Carotid revascularization for primary prevention of stroke (CREST-2) is two independent multicenter, randomized controlled trials of carotid revascularization and intensive medical management versus medical management alone in patients with asymptomatic high-grade carotid stenosis. One trial will randomize patients in a 1:1 ratio to endarterectomy versus no endarterectomy and another will randomize patients in a 1:1 ratio to carotid stenting with embolic protection versus no stenting. Medical management will be uniform for all randomized treatment groups and will be centrally directed.
A prospective, non-randomized, multi-center clinical study of the Venus P-valve for the treatment of RVOT stenosis with pulmonary regurgitation after surgery of congenital heart defect.
There is a correlation between endothelial progenitor cells (stem cells) and stenosis of the aortic valve.
Investigate the current situation of carotid stenosis therapy in China. Establish the data bank of carotid stenosis revascularization (CAS and CEA) in China ,in order to get best quality control of the therapy, as well as confirm the standard treatment for carotid stenosis. Understand situation about the adverse events occurs after the revascularization (CAS and CEA), evaluate the health economics .
Register of treatment of unprotected left main coronary artery stenosis in Andalucia (RETRATO).
Degenerative spondylolisthesis describes the slip of one spinal segment relative to the adjacent segment. It is usually associated with spinal stenosis (which limits one's ability to walk and stand) and is the most common indication for surgery in adults over age 65 years. A variety of surgical techniques are available; the most common are the Posterolateral Instrumented Fusion (PLF), and Interbody Fusion (IF) including Posterolateral Interbody Fusion (PLIF), and Transforaminal Interbody fusion (TLIF). IF uses a cage that is placed within the cleaned out disc space between the vertebral bodies being fused. Although this approach achieves a good fusion rate and deformity correction it is associated with a higher surgical cost and potential intra-operative complication rate. What is more, no consensus exists as to whether IF provides better patient rated functional outcome and quality of life. If the advantages of IF do not translate into superior patient rated outcomes, then the risk-benefit ratio would be tipped in favor of PLF. The purpose of this study is to determine if IF is equivalent to PLF for the treatment of degenerative spondylolisthesis. The investigators will conduct a prospective randomized control trial comparing these two procedures. Our primary outcome measure will be the Oswestry Disability Index, which evaluates spinal pain and function.
Obesity is one of the most important determinants of quality of life and function. People with lumbar spinal stenosis may be at increased risk of obesity given walking limitations. Spinal stenosis is a very common degenerative condition in people over 45. People with this condition have pain and numbness in the legs during walking, and therefore avoid physical activity. Lack of physical activity is related to weight gain and increased risk of chronic disease. Objective: The objective of this project is test a new e-health (online) pedometer and nutrition intervention aimed at promoting weight loss and increasing physical activity in overweight and obese individuals with spinal stenosis. Methods: The investigators will recruit 88 people with lumbar spinal stenosis who are overweight or obese. Half of these people will receive the 12-week intervention, and the other half will receive usual care (no intervention). In Weeks 1 and 6, people in the intervention group will meet with a Registered Dietitian and an Exercise Physiologist for personalized sessions. They will receive a pedometer and instructions on how to log in to the e-health site (https://sspanli.mtroyal.ca). They will wear the pedometer daily and log in to the website each week for a nutrition education session, a weekly step goal, and tips. The investigators will look to see whether people in the intervention group show greater change in physical activity, body composition and quality of life compared to the individuals who received usual care. Relevance: The increasing number of people with spinal stenosis represents a huge health care burden in Canada. This intervention could provide a new treatment option that would increase mobility, quality of life, and potentially alleviate the need for expensive treatments like surgery. E-health interventions provide an opportunity for patients to take an active role in their own health, and promote behaviour changes that will result in healthier Canadians less likely to access care in the future.
The purpose of this postmarket Registry is to assess the standard of care and clinical outcomes of the Direct Flow Medical Transcatheter Aortic Valve System used in clinical routine according to the approved commercial indications. Procedures and assessments required by this registry are generally considered standard of care for Transcatheter Aortic Valve Replacement patients. Evaluation criteria will be the incidence of mortality/morbidity and adverse events clinical performance, and hemodynamic performance of the DEVICE via ultrasound (echo) and angiographic imaging.