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Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
08:28

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus

Published on: April 5, 2011

[Association between QT-interval and its dispersion with factors determining prognosis of cardiovascular morbidity

I Pshenichnikov, T Shipilova, D Karaĭ

    Kardiologiia
    |May 26, 2009
    PubMed

    Insights

    Prolonged corrected maximal QT intervals (QTcmax) and QT dispersion (QTcD) are linked to higher arterial hypertension, aortic strain, and left ventricular hypertrophy in older women. These findings indicate an increased cardiovascular risk.

    Area of Science:

    • Cardiology
    • Clinical Electrophysiology
    • Hypertension Research

    Background:

    • Arterial hypertension is a significant risk factor for cardiovascular disease.
    • QT interval prolongation and dispersion are markers of cardiac electrical instability.
    • Identifying predictors of cardiovascular risk in aging populations is crucial.

    Purpose of the Study:

    • To investigate the relationship between prolonged corrected maximal QT intervals (QTcmax) and QT dispersion (QTcD) and arterial hypertension.
    • To assess other factors contributing to high cardiovascular risk in women aged 56-66.
    • To explore the association with aortic elasticity and left ventricular hypertrophy.

    Main Methods:

    • A cohort of 123 women aged 56-65 in Tallinn underwent standard examinations.
    • Methods included blood pressure measurement, electrocardiography, echocardiography, and laboratory tests.
    • Analysis focused on QTcmax, QTcD, pulse pressure, and left ventricular hypertrophy.

    Main Results:

    • Prolonged QTcmax and/or QTcD were associated with elevated pulse pressure, indicating aortic strain.
    • These QT parameters correlated with left ventricular hypertrophy, particularly concentric changes.
    • Participants with prolonged QTcmax/QTcD exhibited a higher 10-year risk of cardiovascular morbidity and mortality.

    Conclusions:

    • QTcmax and QTcD prolongation are associated with indicators of arterial hypertension and adverse cardiac remodeling.
    • These electrophysiological markers may identify women at increased cardiovascular risk.
    • Further research can refine risk stratification using these parameters.
    Abstract

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