Evaluation of the Impact of Ejection Fraction on Clinical Outcomes in Patients Undergoing Cardiovascular Surgery

This study evaluates the impact of ejection fraction (EF) on clinical outcomes in patients undergoing cardiovascular surgeries, specifically coronary artery bypass grafting (CABG) and heart valve replacement. It spans surgeries performed between 2012 and 2022 at Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital. Patients are categorized into two groups based on their preoperative EF: those with preserved EF (≥50%) and those with reduced EF (\<50%). The primary aim is to assess how EF affects postoperative morbidity, mortality, hospital stay, and complications. Secondary aims include evaluating the development of postoperative arrhythmias, the need for vasopressors and inotropes, and transfusion requirements. Data will be collected retrospectively from hospital records and electronic health systems. The study's findings are expected to provide insights into tailored perioperative and postoperative management strategies for patients with varying EF levels, ultimately improving clinical outcomes.