Active clinical trials for "Constriction, Pathologic"

Stroke is one of the important causes of disability and death in the world, in which more than half were ischemic strokes. About 1/4 of the ischemic stroke occurred in the vertebral basilar artery system, especially when in the presence of extracranial proximal vertebral artery stenosis. Vertebral artery stenting is a minimally invasive method for the reconstruction of vertebral artery stenosis and the early clinical studies showed that it was feasible, safe and effective, but the high rate of restenosis has become a bottleneck restricting its development. Previous systematic review had suggested that the drug eluting stent might reduce the incidence of restenosis of vertebral artery. However, prospective randomized controlled trials comparing the efficacy of bare metal stents and drug eluting stents on the prevention of restenosis remains absent.

This study aims to compare the outcomes of surgical treatment and conservative treatment at medium- and long-term period (minimum 2 years) in patients with lumbar stenosis who come to the observation of the PI's Team at the Rizzoli Orthopaedic Institute, through a series exhaustive questionnaires to self-administer to patients in order to define a path of "decision-making" as effective as possible for the patient and the doctor.

the purpose is to evaluate the outcome of visual internal uretherotomy with Holmium laser along with intralesional steroid injection.

This single-centre cross-sectional study aims to ascertain the impact of dyslipidemia on long-term graft patency after coronary artery bypass grafting (CABG).

It is designed to monitor the efficacy of nasal cannula or hıgh-flow nasal oxygen in geriatric patients for endoscopıc retrograde cholangıopancreatography procedures. The aim of the study is to evaluate the efficacy and safety of oxygen support obtained with low-flow nasal cannula and hıgh-flow nasal oxygen during endoscopıc retrograde cholangıopancreatography in the patient group at risk for adverse respiratory events. We hypothesized that high-flow nasal oxygen administration can prevent adverse respiratory events such as deep sedation and patient position that may endanger the airway safety of patients, and reduce the problems in cardiac and hemodynamic parameters that may develop.

Clinical trial aimed at evaluating the safety and performance of the ACURATE neo™ AS Aortic Bioprosthesis and ACURATE neo™ AS TF Transfemoral Delivery System for CE mark approval purposes.

ATLANTIS is a multicenter, phase IIIb, prospective, open-label, randomized trial. The objective of this study is to demonstrate superiority of a strategy of anticoagulation with apixaban (Anti-Xa Group) as compared to the current standard of care in patients who have undergone a successful TAVI procedure. The randomization is stratified according to the presence or not of a mandatory indication for anticoagulation for a reason other than the TAVI procedure (e.g. atrial fibrillation or DVT/PE).

The primary objective of the current study is to determine whether Ataciguat (HMR1766) slows progression of valve calcification in patients with moderate calcific aortic valve stenosis. Secondary and tertiary objectives are to determine whether Ataciguat slows progression of aortic valve function, reduces systemic inflammation, and prevents left ventricular dysfunction in patients with moderate calcific aortic valve stenosis.

The primary objective of the present trial is to demonstrate the effectiveness and safety of the MDT-2111 in the treatment of symptomatic severe aortic stenosis in subjects deemed difficult for surgical operation.

Biliary anastomotic strictures (post liver transplantation) occur in 15-20 % of the cases. Biliary stenting using plastic prosthesis during a period of 1 year is the treatment of choice. Problematic in this approach is the regular change, necessary to overcome occlusion of the stent, resulting in cholestasis and/or infection. This change needs to be performed every 3 months or more frequently in patients with symptoms of stent occlusion. The Kaffes stent (RMS) is a metallic removable stent, especially constructed for the treatment of biliary anastomotic strictures post liver transplantation. The advantage could be that this stent is less prone to occlusion with a lower change frequency (e.g. every 6 months). No randomized, controlled trial (RCT) or data exist comparing plastic stenting versus Kaffes stenting.