Study flowchart. 3D, three-dimensional; AF, atrial fibrillation; AFL, atrial flutter; A-FMR, atrial functional mitral regurgitation; FMR, functional mitral regurgitation; LV, left ventricular; LVEF, left ventricular ejection fraction; LVWMA, left ventricular wall motion abnormality; TAVR, transcatheter aortic valve replacement; TOE, transoesophageal echocardiography; TTE, transthoracic echocardiography; V-FMR, ventricular functional mitral regurgitation.