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[Interpretation of high-sensitivity troponin in patients with chronic kidney failure]

Manon Kolb1, Alexandre Guinand2, Marco Roffi2

  • 1Service de médecine interne générale, Département de médecine interne, réhabilitation et gériatrie, HUG, 1211 Genève 14.

Revue Medicale Suisse
|July 11, 2017
PubMed

Insights

High-sensitivity troponin assays improve acute coronary syndrome diagnosis but challenge interpretation in chronic kidney disease (CKD). Higher cut-off levels and serial measurements may enhance diagnostic accuracy in CKD patients.

Area of Science:

  • Cardiology
  • Nephrology
  • Clinical Diagnostics

Background:

  • High-sensitivity troponin assays offer improved detection but complicate acute coronary syndrome (ACS) diagnosis in chronic kidney disease (CKD).
  • Elevated baseline troponin levels in CKD patients reduce test specificity for ACS.
  • Chronic troponin elevation, even without ACS, predicts mortality in CKD patients.

Purpose of the Study:

  • To address the diagnostic challenges of high-sensitivity troponin assays in patients with CKD.
  • To explore strategies for improving the diagnostic performance of troponin testing in this population.

Main Methods:

  • Review of existing literature on troponin assays and CKD.
  • Analysis of suggested modifications to troponin testing protocols, including adjusted cut-off levels and serial measurements.

Main Results:

  • Standard troponin interpretation is difficult in CKD due to frequently elevated baseline levels.
  • Suggesting higher troponin cut-off levels (2-3 times the standard) may improve specificity for ACS in CKD.
  • Serial troponin measurements can provide additional diagnostic value.

Conclusions:

  • Optimizing troponin testing in CKD requires careful consideration of assay limitations and patient-specific factors.
  • Further investigation into standardized troponin measurement protocols for CKD patients is warranted.
  • Chronic troponin elevation is a significant predictor of mortality in patients with CKD.

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