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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

[Change in the circadian rhythms of the ECG T-wave value in ischemic heart disease]

K G Adamian, S V Grigorian, N L Aslanian

    Kardiologiia
    |August 1, 1980
    PubMed

    Insights

    This study reveals that ischemic heart disease disrupts the natural daily rhythm of myocardial blood supply. In patients, this blood flow rhythm is distorted, unlike in healthy individuals.

    Area of Science:

    • Cardiology
    • Chronobiology
    • Physiology

    Background:

    • The electrocardiogram (ECG) T wave reflects myocardial repolarization.
    • Daily (circadian) rhythms influence cardiovascular function.
    • Ischemic heart disease (IHD) involves impaired blood flow to the heart muscle.

    Purpose of the Study:

    • To investigate the daily rhythm of myocardial blood supply in healthy individuals and patients with IHD.
    • To assess the impact of IHD on the circadian patterns of cardiac blood flow.

    Main Methods:

    • A 24-hour rhythmological study of the T wave on ECG.
    • Inclusion of 25 healthy participants and 141 patients diagnosed with IHD.
    • Analysis of daily variations in myocardial blood supply.

    Main Results:

    • A distinct daily rhythm of myocardial blood supply was identified.
    • Healthy individuals exhibited peak blood supply during the day.
    • Patients with IHD showed distorted and desynchronized rhythms, with maximum blood supply at night and in the morning.

    Conclusions:

    • Coronary artery atherosclerosis, an organic condition, significantly affects the natural daily rhythm of myocardial blood supply.
    • The desynchronization of blood flow rhythms in IHD patients suggests a pathological circadian alteration.
    • ECG T-wave rhythmological analysis can reveal circadian disruptions in myocardial perfusion in IHD.

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