European Heart Journal Advance Access originally published online on April 12, 2006
European Heart Journal 2006 27(11):1289-1297; doi:10.1093/eurheartj/ehi884
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Prognostic significance of the change in glucose level in the first 24 h after acute myocardial infarction: results from the CARDINAL study
1 Duke Clinical Research Institute and Duke University Medical Center, PO Box 17969, Durham, NC 27715, USA
2 Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil
3 Columbia University, New York, NY, USA
4 Henry Ford Hospital, Detroit, MI, USA
5 Montreal Heart Institute, Montreal, Quebec, Canada
6 Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil
7 Procter & Gamble Pharmaceuticals, Mason, OH, USA
8 Alexion Pharmaceuticals, Inc., Cheshire, CT, USA
9 University of Alberta, Edmonton, Alberta, Canada
Received 19 October 2005; revised 17 March 2006; accepted 23 March 2006; online publish-ahead-of-print 12 April 2006.
* Corresponding author. Tel: +1 919 668 7520; fax: +1 919 668 7058.E-mail address: a.goyal{at}duke.edu
See page 1264 for the editorial comment on this article (doi:10.1093/eurheartj/ehl010)
Aims In acute myocardial infarction (AMI), baseline hyperglycaemia predicts adverse outcomes, but the relation between subsequent change in glucose levels and outcomes is unclear. We evaluated the prognostic significance of baseline glucose and the change in glucose in the first 24 h following AMI.
Methods and results We analysed 1469 AMI patients with baseline and 24 h glucose data from the CARDINAL trial database. Baseline glucose and the 24 h change in glucose (24 h glucose level subtracted from baseline glucose) were included in multivariable models for 30- and 180-day mortality. By 30 and 180 days, respectively, 45 and 74 patients had died. In the multivariable 30-day mortality model, neither baseline glucose nor the 24 h change in glucose predicted mortality in diabetic patients (n=250). However, in nondiabetic patients (n=1219), higher baseline glucose predicted higher mortality [hazard ratio (HR) 1.12, 95% confidence interval (CI) 1.041.20, per 0.6 mmol/L increase], and a greater 24 h change in glucose predicted lower mortality (HR 0.91, 95% CI 0.860.96, for every 0.6 mmol/L drop in glucose in the first 24 h) at 30 days. Baseline glucose and the 24 h change in glucose remained significant multivariable mortality predictors at 180 days in nondiabetic patients.
Conclusion Both higher baseline glucose and the failure of glucose levels to decrease in the first 24 h after AMI predict higher mortality in nondiabetic patients.
Key Words: Acute myocardial infarction Diabetes Glucose Prognosis Hyperglycemia
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