Echocardiographic protocol
tricuspid regurgitation
TRICUSPID REGURGITATION
TTE and TEE (Vivid E9/E95, General Electric Healthcare, Chalfont St. Giles, Great Britain) were performed by experienced cardiologists. Chamber sizes, origin and degree of MR post-M-TEER and the severity of tricuspid regurgitation were classified according to the recommendations of the American Society of Echocardiography [The main aspects of the iASD were measured during the widest extension in 2 major dimensions including a major lengthwise (length) and a major oblique (width) dimension. An eccentricity index was calculated by dividing the lengthwise dimension by the oblique dimension (Graphical Abstract).