Myocardial Characterization of Arrhythmogenic Mitral Valve Prolapse (STAMP: STretch and Myocardial Characterization in Arrhythmogenic Mitral Valve Prolapse)

"Group-A patients, with mitral valve prolapse but no mitral regurgitation, will undergo specifically for research purposes a cardiac MRI, 24-hour external loop recording and exercise ECG on top of regular echocardiography evaluation.~Realization of these examinations will be performed according to recommendations for patients with mitral regurgitation (groups B, C and D)"