Role of the tricuspid annulus in functional tricuspid regurgitation development after early isolated mitral valve surgery: is it an old story?

Abstract Funding Acknowledgements Type of funding sources: None. Background. Functional Tricuspid Regurgitation (FTR) has been described as a common condition after isolated mitral valve (MV) surgery, affecting patients’ prognosis. Thus, in cases without significant tricuspid regurgitation (TR) but annular (TA) dilatation, TV annuloplasty is currently recommended. Studies suggesting the used cut-off for definition TA dilatation were based on 2D echocardiography (2DE) and included patients treated with MV surgery heterogeneous disease, degree cardiac remodeling heart rhythm. As management severe MR moved towards an earlier surgical treatment, few data are available about incidence FTR population undergoing early TR, 2DE satisfying criteria dilatation. Aims. To test, prolapse (MVP), TR either normal or dilated (i) if predictive events development (ii) how right chambers’ assessed by 3D (3DE) affects dimension. Methods. We studied 159 (age 61 ± 11) between 2010 2017. Eligible those 3DE images; left ventricular (LV RV) function; sinus rhythm; elevated systolic pulmonary artery pressure (sPAP); 2DE; absent TR. The decision to not perform was inspection. All underwent complete 2DE, analysis performed using custom software, including LV, RV, atrial (LA) (RA) assessment. dimension obtained MPR. Clinical follow-up at 36 6 months major adverse (MACEs, hospitalization, death, arrhythmias) recorded. Results. Based dimensions, divided group 1 (N = 68, 43%, TA?21 mm/m²) 2 (N= 91, 57%, TA). Patients showed larger RA volume, RV basal diameter area (p < 0.05) compared (Table). At multivariate analysis, only function independently correlated 0.05). follow-up, no differences noted groups MACEs Kaplan-Meier (Fig.). COX failed result predictor cardiovascular (model’s X2, p > Conclusions. In defined may necessarily evolve FTR, be needed. this population, evaluation better define probability develop FTR. Figure. Fig