Severe Tricuspid Valve Regurgitation

International Registry to collect patients with severe TR undergoing TricValve implantation from multiple Italian and European centers, aimed at: * Assessing the effect of TricValve implantation on cardiovascular and all-cause mortality, HF rehospitalization, renal function, functional capacity and quality of life. * Clarifying the haemodynamic effects of TricValve implantation and investigating their pathophysiological implications.

Purpose of this clinical study is to demonstrate the safety and efficacy of MIA-T system in improving clinical outcomes in symptomatic patients with severe tricuspid regurgitation (TR grade ≥3) despite optimal medical therapy, who have been determined by the site's local heart team to be at intermediate or greater estimated risk for mortality and morbidity with tricuspid valve surgery.