Complete Revascularization Showed A Better Cardiac Function Improvement In Patients With Low Ejection Fraction.

Purpose: This study aimed to compare postoperative ejection fraction (EF) in response to coronary artery bypass grafting (CABG) among patients with preoperative EF <35% and >35%.

Methods: A retrospective study was conducted in a single institution using clinical data of 660 patients undergoing elective on-pump CABG in 2018-2019. Patients were classified into two groups based on preoperative left ventricle ejection fraction (<35% and >35%).