JOURNAL ARTICLE

Usefulness of serum bilirubin levels as a biomarker for long-term clinical outcomes after percutaneous coronary intervention

Hyun-Wook Kim, Dong-Hyun Choi, Leejin Lim, Young-Min Lee, Joon Tae Kang, Seung Seok Chae, Young-Jae Ki, Heesang Song, Young-Youp Koh
Heart and Vessels 2015, 30 (6): 728-33
25048679
The aim of this study was to evaluate the prognostic value of serum total bilirubin on the development of adverse outcomes after percutaneous coronary intervention (PCI) besides high-sensitivity cardiac troponin T (hs-cTnT) and N-terminal pro-B type natriuretic peptide (NT-proBNP). Serum total bilirubin, hs-cTnT, and NT-proBNP were analyzed in 372 patients who underwent PCI. The primary endpoint was cardiac death. There were 21 events of cardiac death during a mean of 25.8 months of follow-up. When the serum total bilirubin cut-off level (median value) was set to 0.58 mg/dL using the receiver operating characteristic curve, the sensitivity was 95.2 % and the specificity was 51.0 % for differentiating between the group with cardiac death and the group without cardiac death. Kaplan-Meier analysis revealed that the lower serum total bilirubin group (<0.58 mg/dL) had a significantly higher cardiac death rate than the higher serum total bilirubin group (≥0.58 mg/dL) (10.4 vs. 0.6 %, log-rank: P = 0.0001). In conclusion, low serum total bilirubin is a predictive marker for cardiac death after PCI.

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