ARQUIVOS BRASILEIROS DE CARDIOLOGIA, cilt.113, sa.2, ss.207-215, 2019 (SCI-Expanded)
Background: Myocardial performance index (MPI), demonstrates both systolic and diastolic functions of the left ventricle. Presystolic wave (PSW) is frequently detected on Doppler examination of the left ventricular outflow tract and possible mechanism of PSW is impaired LV compliance and left ventricular stiffness.