Aortic Stenosis clinical trials at University of California Health

The objective of ENVISION is to evaluate the safety and effectiveness of the Navitor Transcatheter Aortic Valve Implantation (TAVI) System for treating patients with symptomatic, severe native aortic stenosis who are considered intermediate or low risk for surgical mortality.

The goal of this study is to increase shared decision making for patients considering treatment for severe aortic stenosis. The main questions it aims to answer are: - Do patient decision aids and clinician skills training course improve the quality of decisions, and do they work well for different patient populations? - Are heart clinics able to reach the majority of patients with decision aids before their specialist visit and do the majority of clinicians complete the training course? All participating sites will start in the usual care group and then will be randomly assigned a time to switch to the intervention group. Participants will complete surveys before and after their specialist visit. Researchers will compare data from patients seen during usual care with data from those seen after the interventions are implemented to see if there are improvements in the quality of decisions.

Data on valve performance following ViV-TAVR has usually been obtained with the use of Doppler-echocardiography. However, some reports have shown significant discordances in the evaluation of mean transvalvular gradient between echocardiography and catheterization, with an overestimation of the real gradient with echo (vs. cath) in most cases. Thus, the incidence of procedural-device failure may be lower than that reported in the ViV-TAVR literature,