The Added Value of 3-Dimensional Echocardiography to Understand the Pathophysiology of Functional Tricuspid Regurgitation

Current guidelines recommend performing tricuspid valve (TV) repair in patients undergoing left-sided valve surgery if they have a tricuspid annulus (TA) diameter larger than 40 mm (or 21 mm/m2) in 2-dimensional echocardiography (2DE) apical 4-chamber view. However, using a single linear dimension