The Prognostic Value of Lipoprotein-Associated Phospholipase A(2) in the Long-Term Care of Patients With Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention

Lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) is an independent risk factor for cardiovascular disease. Accordingly, studies from many countries around the world have shown an association between Lp-PLA(2) and cardiovascular events in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI), but this association has not been documented among the Chinese. The aim of this study was to assess the use of Lp-PLA(2) as a useful marker for predicting the long-term prognosis of Chinese patients with ACS undergoing PCI. A total of 651 consecutive patients undergoing PCI between September 2013 and January 2015 were divided into 2 groups: the high Lp-PLA(2) group (n = 262, Lp-PLA(2) > 138 nmol/L) and the low Lp-PLA(2) group (n = 389, Lp-PLA(2) ≤ 138 nmol/L). The end point was all-cause mortality and rehospitalization. The median follow-up was 24 months. Multivariate analysis showed that high Lp-PLA(2) was an independent predictor of all-cause mortality and rehospitalization (hazard ratio: 1.429, 95% confidence interval [CI]: 1.411-1.448; P < .05). The Lp-PLA(2) had good accuracy for predicting all-cause mortality and rehospitalization among patients with ACS undergoing PCI (area under the receiver–operating characteristic curve: 0.858, 95% CI: 0.819-0.898; P < .05), and a good correlation with the Global Registry of Acute Coronary Event score (r = 0.525, P < .05). This study provided evidence that Lp-PLA(2) could predict all-cause mortality and rehospitalization risk among patients with ACS undergoing PCI.