Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Ischemic Heart Disease
Initial Total Bilirubin and Clinical Outcome in Patients With ST-Segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention With Drug-Eluting Stents
Sang-Ryul Chung, Tae-Hyun Yang, Ho-Cheol Shin, Han-Young Jin, Jeong-Sook Seo, Jae-Sik Jang, Dae-Kyeong Kim, Dong-Soo Kim, Gwang-Won Seo, Pil-Sang Song, Dong-Kie Kim, Ki-Hun Kim, Sang-Hoon Seol, Doo-Il Kim, Yun-Kyeong Cho, Hyuk-Joon Yoon, Chang-Wook Nam, Seung-Ho Hur, Ung Kim, Jong-Seon Park, Young-Jo Kim
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Keywords: Bilirubin, Drug-eluting stent, Percutaneous coronary intervention, ST-segment elevation myocardial infarction
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2016 Volume 80 Issue 6 Pages 1437-1444

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Abstract

Background:Total bilirubin (TB) concentration is inversely associated with stable coronary artery disease, but there have been few studies on initial TB in patients with ST-segment elevation myocardial infarction (STEMI).Methods and Results:A total of 1,111 consecutive patients with STEMI undergoing primary percutaneous coronary intervention (PCI) with drug-eluting stents (DES) were divided into a high TB group (n=295) and a low TB group (n=816) according to the optimal cut-off 0.79 mg/dl. The high TB group had a higher rate of in-hospital major adverse cardiac events (MACE), a composite of cardiac death, non-fatal MI, and definite/probable stent thrombosis (14.2% vs. 4.2%, P<0.001) and cardiac death (13.9% vs. 3.9%, P<0.001) compared with the low TB group. The 30-day MACE-free survival rate was also significantly different between the groups (P<0.001, log-rank test). On multivariate Cox regression, initial high TB was a significant predictor of in-hospital MACE (HR, 2.69; 95% CI: 1.67–4.34, P=0.010) and of cardiac death (HR 2.72, 95% CI: 1.67–4.44, P=0.012). Adding initial TB to TIMI risk score significantly improved prediction for in-hospital MACE according to net reclassification improvement (NRI=5.2%, P=0.040) and integrated discrimination improvement (IDI=0.027, P=0.006).Conclusions:Initial TB is a powerful prognostic marker, and inclusion of this can improve prediction of in-hospital MACE in patients with STEMI undergoing primary PCI with DES. (Circ J 2016; 80: 1437–1444)

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© 2016 THE JAPANESE CIRCULATION SOCIETY
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