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Arterial-Ventricular Coupling Evaluation in Individuals with Stress-Evidenced Diastolic Dysfunction: A Pilot Study.

L J Cymberknop, I Farro, C Americo

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |October 6, 2020
    PubMed

    Insights

    Arterial-ventricular coupling (AVC) is altered during exercise in patients with stress-induced diastolic dysfunction (DD), primarily due to reduced cardiac contractility. This imbalance may aid in diagnosing DD.

    Area of Science:

    • Cardiology
    • Cardiovascular Physiology

    Background:

    • Arterial-ventricular coupling (AVC) is crucial for cardiovascular performance.
    • Diastolic dysfunction (DD) involves impaired ventricular filling and elevated intracardiac pressures, sometimes exacerbated by exercise.
    • Stress-induced DD presents a clinical challenge in evaluating cardiac function.

    Purpose of the Study:

    • To investigate arterial-ventricular coupling (AVC) in individuals experiencing stress-evidenced diastolic dysfunction (DD).
    • To compare AVC during exercise in patients with DD against healthy controls.

    Main Methods:

    • Utilized stress echocardiography to assess cardiac function during exercise.
    • Evaluated AVC by measuring left ventricular and arterial elastances.

    Main Results:

    • Observed a significant difference in AVC at peak exercise between individuals with DD and controls.
    • Attributed the AVC alteration primarily to a decline in cardiac contractility during stress.

    Conclusions:

    • An imbalanced arterial-ventricular coupling (AVC) may serve as a supplementary diagnostic marker for diastolic dysfunction (DD).
    • This finding highlights the role of AVC in understanding the pathophysiology of stress-induced DD.
    Abstract

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