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  • Title: Elevated CK-MB values after routine angioplasty predicts worse long-term prognosis in low-risk patients.
    Author: Vikenes K, Melberg T, Farstad M, Nordrehaug JE.
    Journal: Scand Cardiovasc J; 2010 Apr; 44(2):69-75. PubMed ID: 19670037.
    Abstract:
    OBJECTIVES: The long-term prognostic value (>5 years) of elevated cardiac biomarkers after elective coronary angioplasty is yet not clear. Most previous studies have included high risk, unstable patients. The aim of this study was to determine the prognostic value of CK-MB mass > or = three times the reference after elective angioplasty in low-risk patients with stable angina. METHODS: A total of 278 consecutive patients were included in the final analysis. Patients with elevated CK-MB values at baseline, and those suffering an acute coronary syndrome <1 month before the time of inclusion, were excluded. Blood samples were drawn just before and 1-3 hours, 4-8 hours after the procedure and the next morning. Nineteen patients (6.8%) had peak CK-MB mass values > or =15 microg/L (three times the reference), and 259 patients had values <15 microg/L (defined as controls). No patient developed new Q-waves on ECG. The median follow-up time was 80.5 months. RESULTS: None of the patients died during the procedure or within the first 30 days after angioplasty, confirming a low risk cohort. All cause mortality, readmission for acute coronary syndromes and target lesion revascularisation (TLR) were more frequent in patients with high CK-MB, 42.1% vs. 22.8%, p=0.034 (log rank). In a multivariate logistic regression analysis, high CK-MB and former angioplasty were the only variables independently related to a reduced event-free survival. CONCLUSIONS: CK-MB mass values > or = three times the reference after elective angioplasty predicts reduced long-term event-free survival.
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