View clinical trials related to Constriction, Pathologic.
Filter by:This is a prospective, randomized, single-center clinical study aiming to explore the safety and efficacy of venous stenting for patients with internal jugular vein stenosis (IJVS).
Decompression surgery has proved to be effective for Lumbar Spinal Stenosis (LSS) with persistent pain. But the efficiency of the surgery for degenerated LSS remain uncertain and is the subject of this study. This is a multiple center open-label randomised trial. Patients were randomly allocated to surgical group or a nonoperative group. Because of the procedure , neither patients nor investigators were blinded. The primary outcome is the change of symptom measure by the Oswestry disability index 6, 12, and 24 months after procedure.
The correlation between metabolic syndrome and carotid artery stenosis is well established. The purpose of this study is to evaluate the relationship between morbid obesity and carotid artery stenosis.
This is a Phase I clinical study to determine the safety and efficacy of using autologous, engineered urethral constructs for the treatment of urethral strictures in adult males. The proposed study design is a prospective non-randomized and uncontrolled single-center investigation. Autologous urothelial cells (UCs) and smooth muscle cells (SMCs), obtained from enrolled male subjects' bladder tissue samples, will be culture expanded in vitro and used to seed tubular PGA scaffolds to create autologous urethral constructs for the repair of urethral strictures.
A non-randomized prospective clinical, pilot study in a single centre assessing the safety and feasibility of the esophageal biodegradable covered stent for refractory benign esophageal strictures with or without fistulae
Primary Objective: To assess the diagnostic accuracy of cholangioscopy-based assessment using SpyDS technology compared to cholangiography-based assessment using ERCP-guided biopsy and brushing in patients with indeterminate biliary strictures in the setting of cholangiocarcinoma.
A multicenter prospective registry planned to recruit more than 5 000 patients with renal artery stenosis was carried out in China. This primary purpose of this study was to evaluate the safety and efficacy of renal artery revascularization in the real world. The secondary purpose was to investigate the etiologic distribution of renal artery stenosis and optimize the indications for renal artery revascularization.
Investigators plan evaluate whether PCSK9 inhibitors, a medication that can lower lipoprotein(a) and control dyslipidemia, can inhibit the progression of aortic stenosis, through a randomized controlled trial.
The purpose of this study is to determine whether carotid surgery combined with optimal medical therapy improves long-term survival free of ipsilateral stroke in patients with asymptomatic carotid stenosis at higher-than-average risk of ipsilateral stroke when compared with optimal medical therapy alone.
This study aims to evaluate whether baseline 18F-sodium fluoride uptake activity at aortic valve could predict aortic stenosis progression in moderate aortic stenosis. Patients with moderate aortic stenosis are enrolled and underwent baseline evaluation including 18F-sodium fluoride PET/CT. After 1 year, all the participants underwent follow-up echocardiography. The study design is an observational trial. Primary endpoint was a change in mean pressure gradient along the aortic valve as assessed by echocardiography at 1 year. Secondary endpoints include changes in aortic valve area, and symptom occurrence.