N-terminal pro-B-type natriuretic peptide is associated with adverse short-term clinical outcomes in patients with acute ST-elevation myocardial infarction underwent primary percutaneous coronary intervention

Taek Geun KwonJang Ho BaeMyung Ho JeongYoung Jo KimSeung Ho HurIn Whan SeongMyeong Chan ChoKi Bae SeungYang Soo JangSeung Jung ParkKorea Acute Myocardial Infarction Registry Investigators
Dept. of Internal Medicine (내과학)
Issue Date
International Journal of Cardiology, Vol.133(2) : 173-178, 2009
Background: Increased level of N-terminal pro-B type natriuretic peptide (NT-proBNP) is known to be associated with adverse outcome in patients with acute coronary syndrome. We evaluated early outcomes of patients with acute ST-elevated myocardial infarction (STEMI) according to the level of NT-proBNP as a substudy of Korean Acute Myocardial Infarction Registry (KAMIR). Methods: Study population consisted of 1052 consecutive patients (mean 61.3±12.8 years old, male 73.2%) with STEMI of onset b12 h who underwent primary percutaneous coronary intervention (PCI) and who had baseline NT-proBNP level by electrochemiluminescence immnunoassay (ECLIA, NT-proBNP kit, Roche Diagnostics, Mannheim, Germany). The study subjects were divided into two groups according to the level of serum NT-proBNP. Results: Patients with NT-proBNP level N991 pg/mL (n=329, 57.1% male) had lower left ventricle ejection fraction (LVEF) (47.8±11.8% vs. 53.0±10.8%, pb0.001), needed longer intensive care (3.7±3.6 days vs. 2.8±2.4 days, pb0.001) and had higher in-hospital mortality (1.3% vs. 7.4%, pb0.001) than those with NT-proBNP level≤991 pg/mL (n=723, 80.5% male). Multiple logistic regression analysis revealed that the independent predictors of in-hospital mortality were LVEFb45% (OR 5.43, 95% CI 1.71 to 17.29, p=0.004), elevated NTproBNP (N991 pg/mL) (OR 3.70, 95% CI 1.14 to 12.03, p=0.030), old age (≥70 years) (OR 4.71, 95% CI 1.43 to 15.52, p=0.011), advanced Killip class (N1) (OR 4.96, 95% CI 1.58 to 15.53, p=0.006), male gender (OR 5.67, 95% CI 1.45 to 22.21, p=0.013) and TIMI flow 0 before PCI (OR 5.04, 95% CI 1.08 to 23.41, p=0.039). Conclusions: This study suggests that baseline NT-proBNP level is associated with short term mortality in patients with STEMI underwent primary PCI. © 2008 Elsevier Ireland Ltd. All rights reserved
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