† These authors contributed equally.
Academic Editors: Brian Tomlinson and Takatoshi Kasai
Low left ventricular ejection fraction (LVEF) was always considered a high-risk
factor for surgery. A growing number of patients with preoperative low LVEF have
undergone cardiac surgery in recent years. The transition of postoperative LVEF
and its correlation with short-term outcomes is not yet clear. We retrospectively
collected the clinical data of cardiac surgery patients with low preoperative
LVEF (