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  • Title: Estimated Glomerular Filtration Rate, Activation of Cardiac Biomarkers and Long-Term Cardiovascular Outcomes: A Population-Based Cohort.
    Author: Vinnakota S, Scott CG, Rodeheffer RJ, Chen HH.
    Journal: Mayo Clin Proc; 2019 Nov; 94(11):2189-2198. PubMed ID: 31668448.
    Abstract:
    OBJECTIVE: To classify subjects in a general population per their renal function and characterize the cardiac biomarker levels, left ventricular function and cardiovascular outcomes over a 10.2 year follow-up period (interquartile range, 5.1-11.4 years). METHODS: This was a retrospective review of a population-based random sample of residents aged ≥45 years. Data were collected between January 1, 1997, and December 31, 2000. One thousand nine hundred eighty-one individuals were classified based on estimated glomerular filtration rate (eGFR) into group I (>90 mL/min/1.73 m2), group II (60 to 89 mL/min/1.73 m2) and group III (<60 mL/min/1.73 m2; chronic kidney disease [CKD]). Age/sex-adjusted baseline characteristics, tertiles of N-terminal pro B-type natriuretic peptide (NT-proBNP) and high-sensitivity troponin T (hs-TnT) and their interactions with eGFR were examined. Outcomes measured included incident myocardial infarction (MI), congestive heart failure, stroke, and all-cause mortality. RESULTS: Eight hundred nineteen patients were classified as group I, 1036 as group II, and 126 of 1981 (6.4%) as group III or CKD. Subjects in group III were older and had a higher incidence of hypertension, diabetes, and MI at baseline. Over a 10.2-year follow-up period, CKD was associated with an increased risk of MI (hazard ratio, 1.95; 95% CI, 1.2-3.14; P=.006) and composite cardiovascular outcomes including MI, congestive heart failure, stroke, and all-cause mortality (hazard ratio, 1.38; 95% CI, 1.05-1.83 ;P=.02). Subjects with NT-proBNP or hs-TnT in the third tertile were at greater risk of cardiovascular events without significant interactions between eGFR and levels of NT-proBNP and hs-TnT. CONCLUSION: Subjects with CKD had significantly elevated cardiac biomarkers and were at an increased risk of MI and adverse cardiovascular events. This warrants future studies to investigate whether these cardiac biomarkers could identify high-risk CKD patients for aggressive management of cardiovascular risk factors.
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