... Soliman Hamad et al., Preoperative ejection fraction as a predictor of survival after coronary artery bypass grafting: comparison with a matched general population Journal of Cardiothoracic ... postoperative days, and latemortality was defined as death that occurred more than30 days after surgery, regardless of cause. For calculating survival of a general population cohort, data wereobtained ... after CABG in patients with an EF of ≤ 20%: a chief complaint of only pain, unstable angina, and a Canadian and NewYork Heart Association class lower than IV.Case selection has been shown to be an...