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Related Experiment Videos

Cardiac troponins in patients with renal dysfunction

P O Collinson1, L Hadcocks, Y Foo

  • 1Department of Chemical Pathology, Mayday University Hospital, London, UK.

Annals of Clinical Biochemistry
|June 23, 1998
PubMed
Summary

Cardiac troponin T (cTnT) and cardiac troponin I (cTnI) are often detectable in patients with renal dysfunction. Serial measurements may be needed to diagnose acute coronary syndromes in this population.

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Area of Science:

  • Cardiology
  • Nephrology
  • Clinical Chemistry

Background:

  • Renal dysfunction can affect cardiac biomarker levels.
  • Accurate diagnosis of acute coronary syndromes (ACS) is challenging in patients with kidney disease.

Purpose of the Study:

  • To investigate the detectability and frequency of cardiac troponin T (cTnT) and cardiac troponin I (cTnI) in patients with varying degrees of renal dysfunction.
  • To assess the correlation of troponin levels with other renal and cardiac markers.

Main Methods:

  • Measured cTnT and cTnI in 198 patients with renal dysfunction using ELISA, Enzymun, OPUS plus, and OPUS Magnum systems.
  • Classified patients into chronic renal impairment (CRI), chronic renal failure (CRF), acute renal failure (ARF), and hemodialysis (HD) groups.

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Main Results:

  • Cardiac troponins were detectable in a significant proportion of patients with renal dysfunction.
  • cTnT and cTnI were more frequently detected in CRF, HD, and ARF groups compared to the CRI group.
  • Troponin concentrations did not correlate with serum creatine kinase (CK), CK-MB, urea, or creatinine.

Conclusions:

  • Cardiac troponins are frequently detectable in patients with renal dysfunction.
  • Serial troponin measurements are crucial for diagnosing ACS in patients with renal impairment due to potential elevations unrelated to acute cardiac events.