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© 2005 European Society of Cardiology
Anaemia is an independent predictor of mortality in patients with left ventricular systolic dysfunction following acute myocardial infarction
a Department of Cardiology, Rigshospitalet, Copenhagen Denmark
b University of Glasgow Glasgow, United Kingdom
c Department of Cardiology, Bispebjerg Hospital Copenhagen, Denmark
* Corresponding author. Sponnecksvej 15, st., 2820 Gentofte, Denmark. Tel.: +45 45870331. Email address: nvaleur{at}dadlnet.dk (N. Valeur).
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Abstract |
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Background: In patients with chronic heart failure (HF), mortality is inversely related to haemoglobin (hgb) concentration. We investigated the prognostic importance of anaemia in patients with acute myocardial infarction (AMI) and left ventricular systolic dysfunction (LVSD) with and without HF.
Methods and results: We studied 1731 patients with AMI and left ventricular ejection fraction 
35% from the TRAndolapril Cardiac Evaluation (TRACE) study. Mild anaemia (110 g/L hgb < 120 g/L in women and 120 g/L hgb < 130g/L in men) was present in 264 patients (15%), 114 (7%) had moderate (100 g/L hgb < 110 g/L in women and 110 g/L hgb < 120g/L in men) and 59 (3%) had severe (hgb < 100 g/L in women and < 110g/L in men) anaemia. According to the WHO criteria (hgb 120g/L in women and < 130g/L in men), 25% had anaemia. Anaemia was associated with increasing age, higher serum creatinine, lower body mass index, history of chronic HF, and worse NYHA class. In multivariable analyses including other prognostic factors only severe anaemia was associated with increased mortality, hazard ratio 1.59 (1.20–2.11). Anaemia was of prognostic importance in patients with HF, but not without HF. In HF patients the hazard ratios were 1.73 (1.26–2.36), 1.20 (0.93–1.56) and 1.05 (0.88–1.25) for severe, moderate and mild anaemia, respectively.
Conclusion: Anaemia is an independent predictor of mortality in patients with AMI and LVSD, but prognostic importance of anaemia is confined to the first year following AMI. The increased risk is driven by patients with severe anaemia and HF.
Key Words: Anaemia • Myocardial infarction • Prognosis • Heart failure
Received July 30, 2005; Revised October 16, 2005; Accepted November 28, 2005
Sponsors: TRACE was sponsored by a grant from Roussel-Uclaf and Knoll.
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