[Troponin elevation--differential diagnostic considerations and prognostic importance]
Jesper Khedri Jensen1, Hans Mickley
1Odense Universitetshospital, Kardiologisk Afdeling B.
Insights
Elevated cardiac troponins can occur in non-heart conditions, but only chronic renal failure shows a link to poor outcomes. Further clinical evaluation is crucial for unexpected troponin elevations.
Area of Science:
- Cardiology
- Nephrology
- Biomarkers
Context:
- Cardiac troponin elevation is not exclusive to acute myocardial infarction.
- Non-cardiac conditions can also lead to elevated troponin levels.
- Understanding these elevations is critical for accurate diagnosis.
Purpose:
- To review the prevalence and clinical significance of troponin elevations in patients with extra-cardiac organ manifestations.
- To investigate the association between troponin levels and adverse outcomes in non-cardiac diseases.
Summary:
- Elevated troponins are observed in various non-cardiac diseases.
- Chronic renal failure is the only condition where high troponin levels correlate with adverse clinical outcomes.
- Mechanisms for troponin rise in non-cardiac diseases remain unclear, possibly due to co-morbid ischemic heart disease or stress-induced myocardial marker leakage.
Impact:
- Highlights the importance of considering non-cardiac causes for elevated troponins.
- Emphasizes the prognostic value of troponin in chronic renal failure.
- Underscores the need for thorough clinical assessment in patients with unexpected troponin elevations.
Abstract:
It has become increasingly evident that elevation of troponins can be demonstrated in other diseases than acute myocardial infarction. In this review we wanted to assess the prevalence and the clinical importance of troponin elevations in patients with mainly extra-cardiac organ manifestations. Only in chronic renal failure there appears to be evidence to support the conclusion that high levels of troponins are associated with an adverse clinical outcome. The mechanisms underlying the rise in troponins in non-cardiac diseases origin are unknown. One explanation could be that the patients involved have ischemic heart disease as co-morbidity. Severe stress caused by an acute non-cardiac clinical event may result in a minor leakage of myocardial markers. It is essential to perform a careful clinical evaluation in the case of patients with unexpected high levels of cardiac troponins.
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