Assessment of MR mechanism involves the assessment of the morphology of the mitral apparatus (leaflets, annulus, subvalvular apparatus, LV myocardium) and mitral leaflet motion defined by the Carpentier classification.If more than mild MR is suspected or if the mitral valve is structurally abnormal, then the mechanism of MR should be determined. The three main questions to be answered in the assessment of MR are its mechanism, its severity, and consequences of MR on the left ventricle (LV), left atrium (LA), and pulmonary circulation.The following are key points to remember: This state-of-the-art paper reviews the main questions to be answered by echocardiography for the assessment of mitral regurgitation (MR) and illustrates some common tips, tricks, and pitfalls in the echo/Doppler assessment of MR.
