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Impact of High-intensity Interval Exercise and Moderate-Intensity Continuous Exercise on the Cardiac Troponin T Level at an Early Stage of Training
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JOE DOUPE LECTURE: Cardiac troponin in the intensive care unit

Wendy Lim1

  • 1Department of Medicine, McMaster University, Hamilton, Ontario, Canada. limwp@mcmaster.ca

Clinical and Investigative Medicine. Medecine Clinique Et Experimentale
|October 3, 2009
PubMed

Insights

Cardiac troponin elevation is common in critically ill patients, affecting 40-50%. Elevated troponin levels indicate increased risk of death, but the cause and management require further study.

Area of Science:

  • Cardiology
  • Critical Care Medicine

Background:

  • Cardiac troponin is a specific biomarker for myocardial damage.
  • Elevated troponin indicates myocardial cell injury but not the specific cause.
  • Causes of troponin elevation beyond acute coronary syndromes are frequent in critically ill patients.

Purpose of the Study:

  • To review the prevalence of troponin elevation in intensive care unit (ICU) patients.
  • To examine the prognostic significance of troponin elevation regarding adverse outcomes.
  • To address the uncertainty in interpreting and managing elevated troponin in critically ill patients.

Main Methods:

  • Literature review of studies on troponin elevation prevalence in medical-surgical ICUs.
  • Analysis of studies assessing the prognostic value of troponin for adverse outcomes.

Main Results:

  • Cardiac troponin elevation is prevalent, occurring in 40-50% of critically ill patients.
  • Elevated troponin levels are associated with an increased risk of mortality in the ICU and hospital.
  • The precise relationship between troponin elevation, myocardial infarction, and acute coronary syndromes in this population is unclear.

Conclusions:

  • Troponin elevation is a frequent finding in critically ill patients.
  • Elevated troponin may serve as a risk indicator for mortality.
  • Further prospective research is needed to clarify the diagnostic and management implications.
Abstract

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