View clinical trials related to Constriction, Pathologic.
Filter by:The goal of this study is to evaluate the characteristic of intracranial arterial stenosis among young patients.
The goal of this clinical trial is to document a beneficial effect of percutaneous transluminal renal angioplasty (PTRA) of atherosclerotic renal artery stenosis in high-risk patients selected according to the criteria used in the DAN-PTRA study. The main questions the trial aims to answer are if renal artery stenting compared with optimal medical treatment alone has beneficial effects on: - Blood pressure - Kidney function - Hospitalizations for heart failure
The aim of the study is to evaluate the expression of Sodium Glucose Co-transporter 2 (SGLT2) in myocardium from patients with aortic stenosis. 2 groups of patients will be defined: Group A with diastolic heart failure and Group B without heart failure. The expression of SGLT2 will be measured on small myocardium specimens harvested during aortic valve replacement operation. This study should allow us to better understand the effect of glifozines in human heart failure.
Carotid Disease causes 10% of strokes. The Investigators are attempting to investigate the use of Transcranial Doppler to see if this is and effective, efficient, and/or valid way to identify individuals at highest risk for thromboembolic events from carotid disease. The plan is to plot the number of high intensity transient transcranial doppler signals with the category of patient (asymptomatic, symptomatic, and actively symptomatic) and evaluate if a relationship exists. The Investigators hypothesize that a linear relationship exists in that the higher the number of HITS the more symptomatic the patient. If results demonstrate the numbers of HITS correlate with the severity of disease this could potentially identify asymptomatic patients having subclinical symptoms who would benefit from a more urgent surgical intervention versus the current standard of care of elective intervention.
A prospective of 30 patients with symptomatic severe congenital valvular pulmonary stenosis who are indicated for percutaneous balloon pulmonary valvuloplasty . the aim is to 1. - evaluate electrical and mechanical remodeling of RV 6 months following balloon dilation 2. - evaluate Functional capacity using 6MWT and SaO2 before and 6 months following BPV
The purpose of this study is to assess the impact of temperature-sensitive radiofrequency ablation (RFA) immediately before biliary stent placement on duration of biliary stent patency and re-intervention free survival. This is a research study meant to collect information to help other patients with malignant biliary strictures in the future.
This study will evaluate the safety and effectiveness of the GORE® VIABIL® Biliary Endoprosthesis in the treatment of benign biliary strictures secondary to Chronic Pancreatitis (CP).
The goal of this observational study is to investigate the incidence, current management practices, and outcomes in pediatric patients with HAC after liver transplantation. Research question: - What are the overall incidence of HAC and the effectiveness of all treatment strategies for HAC after pediatric LT? - What are the current management practices in the experience of centers, anticoagulant therapy, screening protocol, and assessment criteria for HAC after pediatric LT? The burden of participation is considered to be minimal, and limited to the questionnaires.
The goal of this prospective, multicenter clinical trial is to determine if the use of the postoperative outcome prediction model the Dialogue Support tool can alter postoperative patient-reported outcome and satisfaction compared to current practice. The main questions it aims to answer are: - Does its use alter patient-reported outcome measured by general assessment regarding leg pain and Satisfaction in lumbar spinal stenosis? - Does its use alter patient-reported outcome as measured by general assessment regarding arm pain and Satisfaction in cervical rhizopathy? - How does the Quality of Life in patients - who after assessment by spinal surgeon do not proceed to surgery - compare with patients with the same baseline profile who did undergo surgery? Eligible participants will be presented with their predicted postoperative outcome generated by the Dialogue Support tool, as an adjunct to the ordinary assessment by a spine surgeon. Researchers will compare participants with a matched control group from the Swedish Spine Register ("Swespine") to see if the Dialogue Support tool can alter postoperative patient-reported outcome and satisfaction.
To evaluate the safety and efficacy of urethral drug balloon catheter in the treatment of urethral stricture.