View clinical trials related to Constriction, Pathologic.
Filter by:Microvascular function in patients undergoing Transcatheter Aortic Valve Implant (TAVI) for severe symptomatic aortic stenosis: association with myocardial fibrosis
To evaluate the safety and effectiveness of Grency venous stent system in the treatment of iliac vein stenosis or occlusion.
Through prospective registration and follow-up, this study will collect data of patients with intracranial/carotid stenosis, including clinical information, neuropsychological scales, multimodal magnetic resonance images. The investigators aim to analyze clinical and imaging characteristics of patients with cognitive impairment related to intracranial/carotid stenosis, in order to achieve early identification of cognitive impairment.
The transparent cap-assisted endoscope has the function of fixing field of view and increasing visual space. It has been widely used in gastrointestinal examination and treatment. In this study, the investigators intend to apply transparent cap-assisted choledochoscopy to endoscopic biliary tract exploration and biopsy to investigate whether transparent cap-assisted choledochoscopy can improve operability, visual field clarity, and biopsy accuracy.
With the emergence of advanced technology to date in the artificial intelligence (AI), computer aided diagnosis has gradually gained its popularity in the field of healthcare. Particularly, in the clinical practice of coronary artery disease diagnosis, the application of AI could be of great implication in alleviating the shortage of medical sources. To evaluate the effectiveness and safety of the AI-based coronary CT angiographic analysis software (RuiXin-CoronaryAI) for diagnosis of coronary artery stenosis, a retrospective, multi-center, cross-over designed, blinded, sensitivity superiority and specificity non-inferiority clinical trial will be conducted.
Tracheal stenosis is a serious complication following prolonged intubation. There are important differences in the challenges of airway management. This study consists of our anesthesia management experience in patients with unusual placement of tracheal stenosis due to Covid-19 undergoing tracheal dilatation.
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 aim of the study is to assess the benefit of wearing a lumbar orthosis after surgery for spinal stenosis. It will be evaluated if a post-surgery immobilization for 6 weeks with a lumbar orthosis reduces early recurrence, increases walking distance, decreases significantly faster pain and pain medication after surgery
The aim of the present study is to investigate safety and efficacy of early versus deferred aortic valve replacement in patients with moderate aortic stenosis combined with moderate mitral regurgitation.
The purpose of this phase 2 study is to examine if inhibiting IL-17A activation using the biologic drug Taltz, in idiopathic subglottic stenosis patients will decrease scar fibroblast proliferation therefore reducing or eliminating the need for invasive or repeat surgeries.