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Relation between cardiac troponin I and mortality in acute decompensated heart failure

John J You1, Peter C Austin, David A Alter

  • 1Institute for Clinical Evaluative Sciences, University of Toronto, Ontario, Canada.

American Heart Journal
|March 27, 2007
PubMed

Insights

Elevated cardiac troponin I levels in acute decompensated heart failure (ADHF) independently predict mortality. This troponin testing offers valuable prognostic information beyond traditional markers, aiding clinical decisions.

Area of Science:

  • Cardiology
  • Biomarkers
  • Heart Failure Research

Background:

  • Elevated troponin levels are common in acute decompensated heart failure (ADHF).
  • The prognostic significance of troponin elevations beyond established predictors in heart failure remains unclear.

Purpose of the Study:

  • To investigate the association between cardiac troponin I levels and all-cause mortality in patients hospitalized for ADHF.
  • To determine if cardiac troponin I provides prognostic value independent of traditional risk factors.

Main Methods:

  • The EFFECT study analyzed data from 2025 patients hospitalized for heart failure in Ontario, Canada.
  • Cardiac troponin I levels were measured, and their association with all-cause mortality was assessed.
  • Statistical models were used to adjust for potential confounding factors.

Main Results:

  • Cardiac troponin I levels >0.5 microg/L were observed in 34.5% of patients.
  • Elevated cardiac troponin I was an independent predictor of mortality (aHR 1.49).
  • A significant dose-response relationship existed between troponin I levels and mortality (aHR 1.10 per 1 microg/L increase).

Conclusions:

  • Cardiac troponin I is an independent predictor of all-cause mortality in hospitalized ADHF patients.
  • Troponin testing offers valuable prognostic information beyond traditional predictors.
  • Cardiac troponin measurements can assist in medical decision-making for ADHF patients.
Abstract

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