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The aim of this study was to evaluate the capacity of the SYNTAX Score-II (SS-II) to predict long-term mortality in patients undergoing left main percutaneous coronary intervention (LM-PCI) treated with second-generation drug-eluting stents (DES).Data from 487 consecutive patients with de novo left main coronary artery disease undergoing PCI were retrospectively studied. The patients were divided into tertiles according to the SS-II: low SS-II tertile (SS-II ≤ 22), intermediate SS-II tertile (SS-II of 23 to 30), and high SS-II tertile (SS-II ≥ 30). The survival curves were estimated by the Kaplan-Meier method. Univariate and multivariate Cox proportional hazard regression analyses were performed to evaluate the possible associations between the SS-II and the rates of long-term mortality. The predictive ability of the SS-II for mortality was assessed and compared with the SYNTAX score (SS) alone by an area under the receiver operator curve (AUC).The overall SS-II was 27.3 ± 9.1. At a mean follow-up of 5.1 years, the long-term mortality was 6.0%. The rates of mortality were 2.4%, 3.4%, and 11.6%, respectively (P &lt; 0.0001) in the low, intermediate, and high SS-II tertiles. The cardiac mortality rates were 1.8%, 1.4%, and 8.1%, respectively (P = 0.002) among patients in the 3 groups. By multivariate analysis, SS-II was an independent predictor of the long-term mortality (hazard ratio: 1.56, 95% confidence interval: 1.05 to 2.32; P = 0.03). The AUC demonstrated a substantially higher predictive accuracy of the SS-II for mortality compared with the SS alone (AUC was 0.689 and 0.596, respectively).In patients with LM-PCI treated with a second-generation DES, the SS-II is an independent predictor of long-term mortality and demonstrates a superior predictability compared with the SS alone.

international heart journal

SYNTAX Score-II Predicts Long-Term Mortality in Patients Who Underwent Left Main Percutaneous Coronary Intervention Treated With Second-Generation Drug-Eluting Stents