View clinical trials related to Aortic Valve Stenosis.
Filter by:The goal of this clinical trial is to learn about the safety and performance of the F2 device for cerebral embolic protection in participants with symptomatic aortic stenosis undergoing a Transcatheter Aortic Valve replacement procedure.
The concomitant presence of cardiac amyloidosis (CA) in patients with aortic stenosis (AS) may challenge the estimation of stenosis degree. In patients with dual pathology (AS + CA) the most frequent AS hemodynamic profile is paradoxical low-flow, low-gradient AS. In this setting, estimating stenosis degree with cardiac ultrasound may be challenging and aortic valve calcium score estimation by cardiac CT is a valuable exam. Preliminary findings from small case series showed that patients with severe AS and CA presented less valvular calcium deposition compared to patients with severe AS alone. On this basis, confirmation of these findings would have a huge clinical impact on diagnosis, choice of treatment strategy and understanding of the pathophysiology of these patients. The aim of the study is to study the correlation between valvular calcium score (assessed by EKG-gated CT) and effective orifice area (assessed through echocardiogram) according to cardiac amyloidosis presence (in the overall population and among hemodynamic phenotypes of cardiac amyloidosis). As secondary endpoints the study will sought to assess TAVI/SAVR efficacy, procedural complications, in-hospital mortality, all-cause death and heart failure hospitalization at 1 year, according to absence or presence of CA.
The purpose of the Long term Evaluation of Cardiac Arrhythmias after Transcatheter Aortic Valve Implantation (LOCATE) Registry is to perform long-term ambulatory monitoring of patients with severe aortic stenosis who undergo trans-catheter aortic valve implantation (TAVI) and develop new onset conduction system abnormalities post-procedure that do not require urgent permanent pacemaker (PPM) implantation. The primary objectives of this study are to assess the incidence of late onset heart block necessitating PPM implantation and to evaluate the incidence of new onset atrial fibrillation (AF) following TAVI. This study aims to provide valuable insights into the long-term cardiac health of TAVI patients and inform the development of improved treatment strategies for aortic stenosis patients with conduction system abnormalities.
The VIVALL-2 study is a randomized trial to compare the self-expandable supra-annular Allegra and the balloon-expandable intra-annular Edwards transcatheter valve systems in patients with degenerated biological aortic surgical valve.
The goal of this observational study is to understand the processes of what causes and accelerates the disease progress in aortic stenosis and following aortic valve replacement. Participants will undergo transthoracic echocardiography every 6 months, with annual visits for state-of-the-art scanning techniques including positron-emission tomography combined with computed tomography or magnetic resonance imaging with radiotracers designed to look at disease processes including fibrosis, calcification, inflammation and thrombosis activity.
This study will investigate changes right ventricular function and functional recovery metrics after transcatheter aortic valve implantation
A virtual, self-directed, and tailored early mobilization program called JUMPSTART, that aims to bridge cardiac rehabilitation intake for post-TAVR patients has been developed at the Hamilton General Hospital. The program includes a series of exercise videos at varying levels of intensity, designed for patients to follow at home, post-discharge. JUMPSTART is currently being offered as part of clinical care. In this new pilot study, the study team plans to develop and test new strategies to optimize recruitment and participation, develop additional JUMPSTART materials and evaluate outcomes through follow-up surveys and registry/administrative data at Hamilton General Hospital.
Calcific aortic stenosis (CAS) is a disease characterized by progressive calcification of the aortic valve, obstructing the passage of blood from the left ventricle into the general circulation. It is the most frequent cause of valve disease in the elderly. To date, no means of preventing the disease has been discovered, and the only treatment available is valve replacement during cardiac surgery, or percutaneous implantation of a valve prosthesis when the narrowing becomes severe and causes symptoms. The intestinal flora or microbiota, the reservoir of all the microorganisms in the gut, is implicated in numerous diseases, particularly of the intestine. But to date, no study has established a link between CAS and microbiota. The intestinal microbiota acts through molecules produced by itself or the host and passing into the bloodstream. In the pathophysiology of CAS, the valve leaflets are breached and do not heal. These molecules can enter and have beneficial or deleterious effects, in particular promoting calcification of aortic valve cells. Concrete objectives: Improve understanding of calcific aortic stenosis in humans Study the composition of intestinal flora in patients with aortic stenosis and compare it with healthy subjects Study the molecules in the intestinal flora likely to be involved in the development of aortic stenosis in humans.
ATTR-cardiac amyloidosis (CA) is present in 4% to 16% of elderly patients with severe calcific aortic stenosis (AS). The reasons for this association are not fully known. It is hypothesized that an amyloidotic infiltration of the aortic valve acts as a trigger for the development of endothelial damage and subsequent calcification. Elderly patients undergoing TAVI will be evaluated for the presence of ATTR-CA in Jordan.
This study aimed at comparing the performance of self-expandable valves versus balloon-expandable valves in patients with ascending aortic dilation undergoing transcatheter aortic valve replacement.