The Mitral to Pulmonary Velocity–Time Integral Ratio is a Simple, Feasible and Accurate Discriminator for Echocardiographic Evaluation of Severe Isolated Mitral Regurgitation

Abstract

Echocardiographic quantification of mitral regurgitation (MR) remains challenging and traditional quantitative methods are prone to measurement errors. An increased mitral–aortic VTI ratio has been described for MR severity assessment. RVOT and LVOT flow should be equal (excluding pulmonary valve dysfunction). We investigated the mitral–pulmonary VTI ratio as an alternative in clinical situations where the LVOT VTI could not be used.