**Corresponding authors:
Jiechun Huang, MD.
Department of Cardiothoracis Surgery
Huashan Hospital, Fudan University
#12 Wulumuqi Rd. (M), Shanghai, 200040 P.R.China
Tel.: +86 21 13003167575
Email:huangjiechun@huashan.org.cn
Key words: Off-pump coronary artery bypass surgery; Left ventricular dysfunction; Long-term outcomes; Propensity Score Matching
Running title: Rongrong Jiang et al : OPCAB in impaired left ventricular ejection fraction.