Results of the OBSERVANT study: Clinical features and short-term outcomes of the enlisted population who underwent aortic valve replacement (transcatheter versus surgical)|Risultati dello studio OBSERVANT: Caratteristiche cliniche ed esiti a breve termine della popolazione arruolata sottoposta a sostituzione valvolare aortica (transcatetere versus chirurgica)

OBSERVANT represents the first national observational study on the comparative effectiveness of transcatheter aortic valve implantation (TAVI) vs surgical aortic valve replacement (SAVR) at short, medium and long term, in a patient population with severe aortic stenosis (AS). The aim of this paper is to describe patient characteristics and short-term outcomes of the enrolled population.