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Histological Quantification of Chronic Myocardial Infarct in Rats
09:45

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Published on: December 11, 2016

[Relationship between myocardial viability and ventricular late potentials in patients with history of myocardial

Iu I Buziashvili, E M Khananashvili, E U Asymbekova

    Kardiologiia
    |December 21, 2002
    PubMed

    Insights

    Patients with viable myocardium after myocardial infarction are more likely to have ventricular late potentials and arrhythmias. This finding highlights the importance of assessing myocardial viability for risk stratification in post-infarction patients.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Cardiac Imaging

    Context:

    • Myocardial infarction survivors are at risk for ventricular arrhythmias.
    • Assessing myocardial viability is crucial for risk stratification.
    • Late ventricular potentials (LVPs) are potential predictors of arrhythmias.

    Purpose:

    • To investigate the relationship between viable myocardium and the presence of LVPs in myocardial infarction survivors.
    • To determine if dobutamine stress echocardiography (DSE) can identify patients at higher risk for arrhythmias based on myocardial viability.

    Summary:

    • This study analyzed 34 myocardial infarction survivors using high-resolution ECG, DSE, and Holter monitoring.
    • Patients with viable (hibernating) myocardium detected by DSE showed a significantly higher incidence of LVPs (61.1%) compared to those with irreversible dysfunction (18.7%).
    • Viable myocardium was associated with a higher prevalence of high-grade ventricular arrhythmias, though no direct correlation was found with Lown grade.

    Impact:

    • Dobutamine stress echocardiography can help identify myocardial infarction survivors at increased risk for ventricular arrhythmias by detecting viable myocardium.
    • The presence of viable myocardium is a significant predictor of late ventricular potentials and high-grade ventricular arrhythmias.
    • Findings contribute to improved risk stratification and management strategies for patients post-myocardial infarction.
    Abstract

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