Transcatheter Aortic Valve Implantation (TAVI) is became the gold-standard therapy for patients with severe and symptomatic aortic stenosis with high operative risk or not suitable for surgery.~All studies assessed TAVI showed excellent results at short and mid-term follow-up. The current and future development of the devices predict an extension of indications to intermediate-risk and younger patients.~Therefore, long-term evaluation of these valves is a priority to determine their durability.~Clinical outcomes of these patients are well documented by large registers. Thus, FRANCE 2 registry studying more than 3000 patients realized in 34 French centers showed at 30 days a rate of death of 9.7%, and incidence of stroke of 3.4%. SOURCE registries studied more than 5000 patients in Europe and United-States with three generations of TAVI. All-cause mortality at 1 year was respectively 23.9%, 19.4% and 11.7% in SOURCE, SOURCE XT (Sapien XT) and SOURCE 3 (Sapien 3).~However, standardized echographic follow-up of patients implanted with TAVI is lacking.~Indeed, there was not consensual definition of TAVI degeneration until now. Recently, European Society of Cardiology published echographic criteria to precise and standardized TAVI deterioration based on simple hemodynamic and morphological criteria.~In addition, very few studies have been interested in monitoring more than 5 years of these devices.~Finally, nowadays the investigator did not know if TAVI evolution is the same as surgical bioprosthesis.
Transcatheter Aortic Valve Implantation (TAVI) is became the gold-standard therapy for patients with severe and symptomatic aortic stenosis with high operative risk or not suitable for surgery.~All studies assessed TAVI showed excellent results at short and mid-term follow-up. The current and future development of the devices predict an extension of indications to intermediate-risk and younger patients.~Therefore, long-term evaluation of these valves is a priority to determine their durability.~However, standardized echographic follow-up of patients implanted with TAVI is lacking.~Indeed, there was not consensual definition of TAVI degeneration until now. Recently, European Society of Cardiology published echographic criteria to precise and standardized TAVI deterioration based on simple hemodynamic and morphological criteria.~In addition, very few studies have been interested in monitoring more than 5 years of these devices.~Finally, nowadays we did not know if TAVI evolution is the same as surgical bioprosthesis.