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Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
11:04

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism

Published on: September 1, 2014

[Noninvasive radiodiagnosis of left ventricular diastolic dysfunction in hypertensive patients]

O A Alekseeva, N N Mikheev

    Vestnik Rentgenologii I Radiologii
    |August 27, 2011
    PubMed

    Insights

    Doppler studies combined with tissue Doppler can detect early signs of left ventricular diastolic dysfunction in hypertensive patients. Standard Doppler echocardiography alone may miss these initial indicators.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Hypertension Research

    Background:

    • Hypertensive disease (HD) can lead to left ventricular (LV) diastolic dysfunction.
    • Early diagnosis of LV diastolic dysfunction is crucial for managing hypertensive patients.
    • Conventional echocardiography (echoCG) and Doppler echocardiography (DechoCG) are used, but their efficacy in early detection needs clarification.

    Purpose of the Study:

    • To evaluate the diagnostic value of Doppler studies for early detection of LV diastolic dysfunction in patients with hypertensive disease.
    • To compare the findings of standard echoCG, DechoCG, and tissue DechoCG (TDechoCG) in identifying diastolic dysfunction.
    • To assess the relationship between LV mass index, hypertrophy patterns, and diastolic dysfunction in hypertensive patients.

    Main Methods:

    • Examined 74 patients with grade 1-2 HD and 20 healthy controls.
    • Utilized echoCG, DechoCG, TDechoCG, and treadmill exercise testing.
    • Classified patients into groups based on LV mass index (increased vs. normal) and assessed LV hypertrophy patterns.

    Main Results:

    • Standard DechoCG did not detect initial signs of LV diastolic dysfunction in all affected patients.
    • TDechoCG identified signs of primary LV diastolic dysfunction in both hypertensive groups.
    • An elevated E/e' ratio (≥10) in patients with concentric LV hypertrophy (CLVH) indicated elevated LV filling pressures, suggesting early diastolic dysfunction.

    Conclusions:

    • Standard DechoCG is insufficient for detecting the earliest signs of LV diastolic dysfunction in hypertensive disease.
    • Combining Doppler studies, particularly TDechoCG, improves the detection of initial LV diastolic dysfunction.
    • A high E/e' ratio in hypertensive patients with CLVH is a significant early indicator of diastolic dysfunction and elevated LV filling pressures.
    Abstract

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