Mitral regurgitation (MR) is the second most common valve disease needing intervention in the Western world, after degenerative aortic stenosis.1 Echocardiography is the key examination in the assessment of MR patients.2 Echocardiography grades MR severity, establishes its mechanism and aetiology, gives a complete morphological description of the valve, assesses the left ventricular (LV) systolic function and remodelling, the degree of left atrium (LA) dilatation, and the likelihood of pulmonary hypertension, and describes and quantifies associated valve lesions. Transoesophageal echocardiography (TOE) remains the examination of choice for the complete description of mitral valve (MV) morphology and confirmation of the MR mechanism….
