P1589Right atrial volume is the major determinant of tricuspid annulus area in healthy subjects and in patients with functional tricuspid regurgitation due to various etiologies. (28th August 2018) - Muraru, D; Addetia, K; Genovese, D; Guta, A C; Ochoa-Jimenez, R; Aruta, P; Veronesi, F; Mor-Avi, V; Previtero, M; Guida, V; Nguyen, K; Iliceto, S; et al.