Abstract Background: The management of heart failure with reduced ejection fraction (HFrEF) has advanced with the use of invasive hemodynamic markers such as cardiac power output (CPO) and pulmonary artery pulsatility index (PAPI). Simultaneously, interest has grown in noninvasive prognostic indicators, especially the left ventricular outflow tract velocity–time integral (LVOT-VTI). Objective: This study aimed to assess the correlation between invasive and echocardiographic parameters, particularly CPO, PAPI, and LVOT-VTI, in patients with HFrEF. Methods: This cross-sectional, single-center study included inpatients and […]