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Predicting left ventricular ejection fraction (LVEF) in ST-segment elevation myocardial infarction (STEMI) patients is possible. History of heart failure, acute heart failure, LV dilation, and elevated NT-proBNP predict lower LVEF.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Clinical Research

Background:

  • ST-segment elevation myocardial infarction (STEMI) can lead to impaired left ventricular (LV) function.
  • Predicting LV ejection fraction (LVEF) is crucial for managing STEMI patients.
  • Accurate prediction models can guide therapeutic strategies and improve patient outcomes.

Purpose of the Study:

  • To identify key predictors of LVEF in STEMI patients.
  • To develop and validate a predictive model for LVEF in this population.
  • To stratify STEMI patients based on LVEF for risk-tailored management.

Main Methods:

  • Prospective registry study of 138 STEMI patients admitted within 24 hours.
  • Biomarker analysis (NT-proBNP, PCSK9, hs-cTnI, CRP) on day 1.
  • Serial echocardiography (day 1 and day 10-12) to calculate LVEF.
  • Ordinal regression analysis to identify predictors and construct the prognostic model.

Main Results:

  • Predictors of lower LVEF included chronic heart failure history, Killip class II-IV acute heart failure, LV dilation, postinfarction aneurysm, and elevated NT-proBNP.
  • The developed model demonstrated high sensitivity for predicting reduced LVEF (94.4%) and moderately reduced LVEF (92.9%).
  • Model sensitivity for predicting preserved LVEF was 62.5%.

Conclusions:

  • STEMI patients with a history of chronic heart failure, acute heart failure (Killip II-IV), LV dilation, postinfarction aneurysm, and elevated NT-proBNP are likely to have reduced LVEF.
  • The established model aids in identifying STEMI patients at risk of impaired LV function.
  • Early identification of patients with potential for reduced LVEF can facilitate timely interventions.