View clinical trials related to Aortic Valve Stenosis.
Filter by:The hypothesis is that SEV result in superior valvular hemodynamics (more pronounced during exercise) and exercise capacity relative to BEV. Furthermore, the hypothesis is that stress CMR will be able to demonstrate differences in these hemodynamic parameters. CMR will also provide refined assessment of paravalvular leak and its impact on ventricular function and on clinical outcomes.
Patients with severe aortic stenosis (sAS) treated with transcatheter aortic valve implantation (TAVI) (increasingly younger & lower risk pts) are experiencing SVD of the index THV and thus developing an indication for a redo-TAVI procedure. The evidence on redo-TAVI (where a transcatheter heart valve [THV] is implanted into another THV) is limited, with initial data showing acceptable safety as well efficacy in highly selected and limited populations. Aim is to evaluate short- and long-term data on patients undergoing transcatheter redo-TAVI procedures with THVs for failure of a previously implanted THV and to determine VARC-3 defined efficacy and safety at 30 days and functional outcome at 1 year.
This is a prospective, observational, single-arm, multi-center registry of patients undergoing bioprosthetic aortic valve replacement with the Avalus valve. This prospective registry aims to examine the outcome and performance of surgical aortic valve replacement with the Avalus pericardial bioprosthesis.
The purpose of this study is to help understand how the replacement valve functions over time, both at rest and during exercise.
This prospective, randomized-controlled multicenter study investigates whether virtual reality-assisted patient education in patients undergoing transfemoral transcatheter aortic valve implantation (TAVI) can improve patient understanding and simulative orientation, thereby reducing postinterventional complications, resulting in significantly shorter length of stay.
Aortic stenosis (AS) is a serious and common condition that affects 2-3% of the population >65 years of age in Western countries. It is also responsible for extraordinarily high healthcare expenditures, estimated to be over $6 billion annually,2 in part because the primary treatment for severe AS is aortic valve replacement (AVR) which is resource-intensive. Valve abnormalities are frequently recognized before AS becomes severe, or before there is need for guideline-directed procedural intervention, thereby providing an opportunity for pharmacologic intervention to slow disease progression. Yet, all attempts to prevent AS progression in those with degenerative non-congenital forms of disease have failed. The only non-procedural intervention that benefits patients with moderate or greater AS is the aggressive treatment of hypertension, which reduces net left ventricular (LV) afterload (valvulo-arterial impedance [Zva]) and can slow secondary LV remodeling. The overall goal of this proposal is to integrate advanced imaging and vascular biology to study how von Willebrand factor (VWF) and platelet adhesion promote AS progression through many parallel pathways, thereby representing a potential therapeutic target. We are hypothesizing that blood markers of abnormal VWF proteolysis and platelet-derived factors, and abnormal valve shear patterns which can be detected by advanced analysis of spectral Doppler on echocardiography are predictors for progressive AS.
The purpose of the study is to investigate the superiority of chronic left bundle branch area pacing compared to traditional right ventricular (RV) septal pacing in patients with high-grade conduction disease after transcatheter aortic valve replacement (TAVR). In this investigator initiated, multicenter, prospective, double-blinded, crossover study, chronic left bundle branch area pacing will be compared to chronic right ventricular septal pacing using echocardiographic measures of left ventricular systolic function in patients with a high cumulative ventricular pacing burden after TAVR.
In order to overcome the shortcomings of the assessment questionnaires currently available on the assessment of overall quality of life, the "Toronto Aortic Stenosis Quality of Life Questionnaire" (TASQ) was developed as a specific assessment tool for the impact of severe aortic stenosis in elderly patients, through 16 questions covering 5 domains: symptoms and physical limitations, emotional impact and expectations following TAVI, as well as social limitations incurred. A better knowledge and understanding of the clinical outcomes and quality of life of elderly patients with severe symptomatic aortic stenosis at 12 months of follow-up of a TAVI procedure would further optimize the clinical decision-making process and patient selection who will benefit the most from this intervention in the long term.
To compare down sizing strategy versus annular sizing strategy technique (control group) in Type 0 bicuspid aortic stenosis (AS) patients undergoing transcatheter aortic valve replacement (TAVR) with self-expanding valves (SEVs): a randomized superiority trial
Currently, the optimal antithrombotic therapy after transcatheter aortic valve replacement (TAVR) remains still unknown., The purpose of the study is to compare aspirin versus clopidogrel monoantiplatelet therapy for preventive effect on leaflet thrombosis in patients undergoing TAVR for severe aortic stenosis. This study is designed as a prospective, multicenter, open label, randomized controlled study. Eligible patients will be randomized to aspirin or clopidogrel monotherapy after TAVR. Patients will have dual antiplatelet therapy of aspirin 100 mg and clopidogrel 75 mg for 4 weeks after TAVR and then subsequent monoantiplatelet therapy of either aspirin 100 mg or clopidogrel 75 mg according to the randomization. Leaflet thrombosis will be assessed with cardiac computed tomography (CT) and transthoracic echocardiography at 3 months after TAVR. Patients will be clinically followed for 6 months. The primary endpoint is the Incidence of leaflet thrombosis on cardiac CT at 3 months.