Right ventricle to pulmonary artery coupling in moderate aortic stenosis: association with outcome

Abstract

Background: Right ventricular-pulmonary artery (RV-PA) coupling, which reflects matching of RV contractility over pulmonary resistance and measured by echocardiography as the ratio of tricuspid annular plane systolic excursion (TAPSE) and systolic PA pressure (sPAP), has emerged as a novel prognosticator in severe aortic stenosis (AS). However, its prognostic value in moderate AS has yet to be examined.