Active clinical trials for "Constriction, Pathologic"

The main objective of this study is to evaluate the feasibility and safety of the GEMINUS system in patients with severe symptomatic aortic stenosis. This is a prospective, open label, multicentre, single arm, first in human clinical study. Clinical follow up for all patients will be performed at 30 days, 6 months, 1, 2, 3, 4 and 5 years post-implantation

This study is intended to investigate the effect of angiotensin receptor blockers (ARBs) on mild-to-moderate aortic stenosis.

Objective propose: to investigate the effect of Ramipril in suppressing ST2 (suppression of tumorigenicity 2) in the cardiac mitral valve in patients with Rheumatic Heart Disease. We hypothesized that we hypothesized that ramipril will improve rheumatic mitral valve fibrosis through the downregulation of ST2.

A 2 and 5 year evaluation of clinical outcomes in the treatment of degenerative spinal stenosis with concomitant low back pain by decompression with additional stabilization using the coflex® Interlaminar Technology for FDA Actual Conditions of Use Study.

Onlay uretroplasty with either grafts or flaps has been attempted by many reconstructive urologists, ln particular buccal mucosa graft (BMG) ureteroplasty has been reported by many centers and has shown its feasibility and safety

Airway stenting is usually efficient to treat central airway obstruction but can lead to severe and potentially lethal complications (stent migration, obstructive granuloma, perforation, and hemoptysis). 3D customized airway stents (computer-aided conception using CT-scan data), perfectly suited to airway anatomy, should improve the tolerance and safety of airway stenting. We demonstrated in a previous pilot study, dedicated to patients with anatomically complex stenoses the safety of 3D patient-specific stents. These appealing results in highly complex situations suggest the need to evaluate these devices in more common situations. In this study we aim to test our new generation stents in all patients planned for airway stenting. After computer-assisted segmentation of airways (VGStudioMAX 3.0 software), the stenosis is virtually corrected, leading to the conception of a virtual stent (AnatomikModeling, Toulouse), allowing for the fabrication of a mold using a 3D printer. The stent is then built and sterilized (NOVATECH, Berlin) and inserted during rigid bronchoscopy. Close follow up is then conducted, including clinical evaluation after one week, three, six and 12 months; spirometry at one week, 3 months, 6 months and 12 months and chest CT-scan at one week.

Stenosis is one of the most frequent complications in patients with Crohn's disease (CD). In particular, CD patients with intestinal strictures are often faced with short bowel syndrome after repeated or extensive surgical resection. Endoscopic management shows good efficacy and safety in the treatment of strictures in CD patients. The European Crohn's and Colitis Organisation (ECCO) guideline recommended that endoscopic balloon dilatation is suitable to treat short [<5 cm] strictures of the terminal ileum in CD. Recently, Lan et al. reported that endoscopic stricturotomy appeared to be more effective in treating CD patients with anastomotic stricture than endoscopic balloon dilatation. However, there is no prospective clinical studies evaluating the efficacy and safety of endoscopic stricturotomy in the treatment of fibrostenotic Crohn's disease. The trial aims to compare the efficacy and safety of endoscopic stricturotomy with endoscopic balloon dilation in the treatment of small bowel stricture in patients with Crohn's Disease.

Randomized, double-blinded, placebo-controlled study in AS patients with subclinical or clinical heart failure undergoing treatment with TAVR.

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 primary objective of this study (LANDMARK) is to compare the safety and effectiveness of the Myval THV Series with Contemporary Valves (Sapien THV Series and Evolut THV Series) in patients with severe symptomatic native aortic valve stenosis. This study will be done in total 768 subjects (384:384, Myval THV Series vs. Contemporary Valves) The randomisation will be carried out with an allocation ratio of 1:1 between Myval THV Series vs. Contemporary Valves (Sapien THV Series and Evolut THV Series)