High-Sensitivity Troponin I and Amino-Terminal Pro–B-Type Natriuretic Peptide Predict Heart Failure and Mortality in the General Population. (1st September 2014)

• Record Type: Journal Article
• Authors: McKie, Paul M; AbouEzzeddine, Omar F; Scott, Christopher G; Mehta, Ramila; Rodeheffer, Richard J; Redfield, Margaret M; Burnett, John C; Jaffe, Allan S
• Is Part Of: Clinical chemistry. Volume 60:Number 9(2014)
• Page Start: 1225
• Page End: 1233
• Publication Date: 2014-09-01
• Subjects: Clinical chemistry -- Periodicals; Pharmaceutical chemistry -- Periodicals; Biochemistry -- Periodicals; Biochimie -- Périodiques; Diagnostics biologiques -- Périodiques; Biochemistry; Clinical chemistry; Pharmaceutical chemistry; Biochemistry; Laboratory Techniques and Procedures; Klinische chemie; Periodicals; 616.075605
• DOI: 10.1373/clinchem.2014.222778
• Languages: English
• ISSNs: 0009-9147

Abstract

Abstract: INTRODUCTION: High-sensitivity cardiac troponin assays have potent prognostic value in stable cardiovascular disease cohorts. Our objective was to assess the prognostic utility of a novel cardiac troponin I (cTnI) high-sensitivity assay, independently and in combination with amino-terminal pro–B-type natriuretic peptide (NT-proBNP), for the future development of heart failure and mortality in the general community. METHODS: A well-characterized community-based cohort of 2042 participants underwent clinical assessment and echocardiographic evaluation. Baseline measurements of cTnI with a high-sensitivity assay and NT-proBNP were obtained in 1843 individuals. Participants were followed for new-onset heart failure and mortality with median (25th, 75th percentile) follow-up of 10.7 (7.9, 11.6) and 12.1 (10.4, 13.0) years, respectively. RESULTS: When measured with a high-sensitivity assay, cTnI greater than the sex-specific 80th percentile was independently predictive of heart failure [hazard ratio 2.56 (95% confidence interval 1.88–3.50), P < 0.001] and mortality [1.91(1.49–2.46), P < 0.001] beyond conventional risk factors in this community-based cohort, with significant increases in the net reclassification improvement for heart failure. The prognostic utility of cTnI measured with a high-sensitivity assay goes beyond NT-proBNP, yet our data suggest that these 2 assays are complementary and most beneficial when evaluated together in identifying at-risk individuals in the community. CONCLUSIONS: Our findings lay the foundation for prospective studies aimed at identification of individuals at high risk by use of a multimarker approach, followed by aggressive prevention strategies to prevent subsequent heart failure.