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Related Experiment Videos

Precordial mapping in acute myocardial infarction

R B Gulati, R S Wadia, R A Shaikh

    Japanese Heart Journal
    |July 1, 1977
    PubMed
    Summary

    Serial precordial mapping revealed elevated sigma ST in acute myocardial infarction patients. Higher sigma ST levels correlated with increased arrhythmias, infarct extension, and mortality risk.

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    Area of Science:

    • Cardiology
    • Medical Diagnostics

    Background:

    • Acute anterior myocardial infarction poses significant risks.
    • Early and accurate assessment of infarct size and complications is crucial.

    Purpose of the Study:

    • To evaluate the utility of serial precordial mapping (sigma ST) in assessing acute anterior myocardial infarction.
    • To correlate sigma ST levels with infarct characteristics, clinical outcomes, and complications.

    Main Methods:

    • Serial precordial mapping was performed in 30 patients with acute anterior myocardial infarction.
    • Sigma ST, the sum of ST elevations in a 48-lead map, was calculated.
    • Levels were compared to clinical data, cardiac enzyme levels (SGOT, CPK), arrhythmias, and mortality.

    Main Results:

    • Sigma ST was significantly elevated on admission and gradually decreased.
    • Elevated sigma ST correlated with higher SGOT and CPK levels.
    • Re-elevation of sigma ST suggested infarct extension and was associated with pain and elevated SGOT.
    • Higher sigma ST levels correlated with increased arrhythmias, mortality, and a greater number of risk factors.

    Conclusions:

    • Serial precordial mapping (sigma ST) is a valuable tool for monitoring acute anterior myocardial infarction.
    • Elevated and re-elevated sigma ST levels indicate potential complications like infarct extension and increased mortality risk.
    • Sigma ST may aid in risk stratification and patient management.

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