The Impact of Percutaneous Coronary Intervention on Echocardiographic Parameters in Patients with Chronic Total Occlusion of the Coronary Arteries with Diverse Left Ventricular Ejection Fractions: A Single-Center Retrospective Study

Background: Chronic total occlusion (CTO) of the coronary arteries presents a significant challenge in the management of coronary artery disease, with diverse clinical manifestations and implications for patients with varying left ventricular ejection fraction (LVEF). The aim of this study is to investigate the impact of percutaneous coronary intervention (PCI) on echocardiographic parameters in patients with CTO and different LVEF, so as to optimize the care and outcomes of patients. Methods: We selected patients with CTO of coronary arteries treated at our hospital from June 2021 to June 2023 consecutively in this study. The patients were divided into two groups based on their LVEF: the low to moderate LVEF (