Data Collection
Detailed clinical information: This information included age, sex, body
mass index(BMI), symptom status (New York Heart Association (NYHA)
classification), previous cardiac history (previous myocardial
infarction and previous percutaneous coronary intervention (PCI)),
diabetes, hypertension, hyperlipidaemia, peripheral vascular disease,
previous stroke or chronic obstructive pulmonary disease, smoking,
baseline renal function (eGFR), left ventricular ejection fraction
(LVEF), anaemia, , proteinuria and preoperative IABP implantation. The
information recorded during the operation included the presence of left
main disease, ≥3 coronary artery lesions, ≥3 coronary anastomoses,
operation time, on-pump CABG, and emergency surgery. Postoperative
information included the use of blood products, ventilator time, ICU
stay time. Related information about surgical complications (death,
reoperation, perioperative myocardial infarction, respiratory
complications, atrial fibrillation, stroke) was also included.