Clinical trials

This study is a multicenter, retrospective registry study using the CHATEAU Registry. The study will evaluate patients who underwent transcatheter aortic valve replacement between January 2021 and December 2025. The purpose of the study is to assess clinical outcomes and valve performance after TAVR in real-world practice, with a focus on procedural strategies, valve-related factors, and long-term outcomes. Patient clinical information, imaging findings, procedural data, echocardiographic results, and follow-up outcomes will be collected from existing medical records. No additional intervention, treatment, or study-specific visit will be performed.

The goal of this observational study is to learn about the long-term effects of aortic valve annular calcification in patients undergoing transcatheter aortic valve replacement (TAVR). The main question it aims to answer is: Does the degree of aortic valve annular calcification prior to TAVR influence long-term clinical outcomes, including major adverse cardiovascular events including all-cause mortality, over a 3-year period? Participants who have undergone TAVR as part of their regular medical care for severe aortic stenosis will have their pre-procedural imaging and clinical outcomes evaluated for a 3-year follow-up period.