Plasma Lp-PLA2 levels in patients with CAD. *P<0.05 vs. normal group. Lp-PLA2, lipoprotein-associated phospholipase A2; CAD, coronary artery disease; SAP, stable angina pectoris; USAP, unstable angina pectoris; ACS, acute coronary syndromes; AMI, acute myocardial infarction.