Effects of Transcatheter Mitral Valve Repair With MitraClip on Left Ventricular and Atrial Hemodynamic Load and Myocardial Wall Stress

Although MitraClip induces hemodynamic unloading in patients with predominantly functional MR, myocardial wall stress is not consistently improved. In patients with reduced NT-proBNP, improvements in LA volume index and LV and LA strains were observed. Patients who showed an increase in NT-proBNP exhibited impairment in LV and LA strain, suggesting an increase of myocardial wall stress.