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Utility of Cardiac Troponin to Predict Drug Overdose Mortality

Alex F Manini1,2, Barry Stimmel3, Robert S Hoffman4,5

  • 1Division of Medical Toxicology, Department of Emergency Medicine, Icahn School of Medicine at Mount Sinai, Box 1620, One Gustave Levy Place, New York, NY, 10029, USA. alex.manini@mssm.edu.

Cardiovascular Toxicology
|November 7, 2015
PubMed

Insights

Serum cardiac troponin I (cTnI) levels in patients with drug overdose are strongly linked to mortality. Initial cTnI measurements effectively predict in-hospital deaths, aiding emergency department risk assessment.

Area of Science:

  • Emergency Medicine
  • Toxicology
  • Cardiology

Background:

  • Drug overdose is a leading cause of death in the USA.
  • The prognostic value of cardiac biomarkers in overdose patients is not well understood.

Purpose of the Study:

  • To investigate the association between serum cardiac troponin I (cTnI) and mortality in patients with acute drug overdose.
  • To determine the predictive accuracy of cTnI for in-hospital mortality.

Main Methods:

  • Prospective observational cohort study of adults with suspected acute drug overdose.
  • Analysis of initial and peak serum cTnI levels in relation to in-hospital mortality.
  • Receiver operating characteristic (ROC) curve analysis to assess predictive performance.

Main Results:

  • Out of 437 overdoses, 20 (4.6%) resulted in in-hospital mortality.
  • Mean initial cTnI was significantly higher in non-survivors compared to survivors (1.2 vs. 0.06 ng/mL, p < 0.001).
  • Initial cTnI demonstrated excellent prediction of mortality (AUC 0.87), with high specificity (90%) and negative predictive value (99%).

Conclusions:

  • Initial serum cTnI levels are highly associated with drug overdose mortality.
  • cTnI shows strong prognostic utility in the emergency department evaluation of overdose patients.
  • Further research should explore integrating cTnI into routine overdose assessment protocols.

Keywords:
BiomarkerDrugMortalityOverdoseTroponin

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