Influence of the Atrial Fibrillation on the Tricuspid Annulus Dynamics And Geometry Based on Four – Dimensional Echocardiography Valve Evaluation

Olga L. Bockeria, Leo A. Bockeria, Igor Y. Klimchuk, Marina Y. Mironenko, Pavel P. Rubtsov, Gulzuna A. Yurkuliyeva

Bakulev Scientific Centre for Cardiovascular Surgery, Moscow, Russia

Date, time and location: 2018.05.25 13:30, Exhibition area, 1st Floor. Zone – A

Abstract

Purpose: To evaluate the influence of atrial fibrillation on the tricuspid annulus dynamics and geometry based on four–dimensional echocardiography valve assessment.

Methods: Group #1 of 30 patients with atrial fibrillation (AF) resulted in tricuspid insufficiency (along with moderate to severe MR) with preserved right ventricular function defined as a study group. Group #2 considered as control, characterized by the absence of underlying valvular pathology and arrhythmias. Four-dimensional (4D) transesophageal echocardiography performed in all patients. The data is presented with Me (Q1; Q3) and M ± SD. Mann — Whitney U-test was used.

Results: The following significant differences were found respectively between two groups: median septal-lateral diameter (cm) - 3.9(3.7; 4.2) vs. 3.5 (3.34;3.6), (p<0.01), median annular area (cm2) 10.11±1.04vs 9.86±1.7(р<0,03); the median annular displacement (max) - 4.26±3.41 vs. 9.19±2.01, (p<0.01); median annulus area fraction - 22.42 ±10.01 vs. 44.02±6.79, (p<0.01). There was no statistically significant difference in the median antero-posterior diameter (cm) - 3.7±0.52 vs 3.52±1.41, (p>0,5)

Conclusions: patients with AF demonstrate significant impairment in both geometric and dynamic features of TV annulus comparing to healthy group. This supports the theory of arrhythmogenic enlargement of heart size and impairment of the function in patients with long persistent AF.