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November 29, 2011Clinical Chemistry

Point: Detection of Myocardial Infarction—Is It All Troponin?

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Design

Editorial

Key result

High-sensitivity cardiac troponin assays improve early detection of myocardial infarction, achieving sensitivities of 84% to 95% and negative predictive values of 97% to 99% at presentation.

Authors

EGEvangelos GiannitsisHKHugo A. Katus

Discussion

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Overview

May accelerate ED MI rule-out; leaves open optimal thresholds and specificity trade-offs in practice.

PICO

P
Population
Myocardial Infarction and Acute Coronary Syndrome
I
Intervention / Comparator
High-sensitivity cardiac troponin assays vs Conventional cardiac troponin assays

High-sensitivity cardiac troponin assays enable more rapid and accurate diagnosis of MI and better risk stratification, but necessitate strict adherence to clinical definitions to manage decreased diagnostic specificity.

Limitations

  • Preanalytical factors such as cross-reactivity with heterophilic antibodies, autoantibodies, and severe hemolysis can interfere with measurements.
  • Increased detection of elevated troponin in patients without acute myocardial infarction decreases diagnostic specificity and requires clinical experience to interpret.

Cite This Study

Giannitsis et al. (2011) conducted a review in Myocardial Infarction and Acute Coronary Syndrome. High-sensitivity cardiac troponin assays vs. Conventional cardiac troponin assays was evaluated. High-sensitivity cardiac troponin assays improve early detection of myocardial infarction, achieving sensitivities of 84% to 95% and negative predictive values of 97% to 99% at presentation.

synapsesocial.com/papers/6a8832e10562fa470f4a6992https://doi.org/10.1373/clinchem.2011.168575
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