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Cardiorespiratory and Vascular Variability Analysis to Classify Patients with Ischemic and Dilated Cardiomyopathy.

Javier Rodriguez, Steffen Schulz, Andreas Voss

    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

    Cardiomyopathy patients were classified using cardio, respiratory, and vascular variability. Support vector machine models accurately distinguished between ischemic and dilated cardiomyopathy, and between patients and controls.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Physiology

    Background:

    • Heart disease is a leading cause of death globally.
    • Diagnosing the specific cause of cardiomyopathies remains difficult.
    • Cardiomyopathy patients exhibit distinct physiological variability patterns.

    Purpose of the Study:

    • To classify cardiomyopathy patients using variability analysis.
    • To differentiate between ischemic (ICM) and dilated (DCM) cardiomyopathy.
    • To assess baroreflex response through vascular activity.

    Main Methods:

    • Analysis of electrocardiographic, respiratory, and blood pressure signals.
    • Extraction of beat-to-beat intervals (BBI), respiratory cycle time (TT), systolic (SBP), and diastolic (DBP) blood pressure.
    • Geometric and statistical characterization of cardiorespiratory and vascular activity.
    • Support vector machine (SVM) model development for classification.

    Main Results:

    • Optimal SVM model achieved 92.7% accuracy for ICM vs. DCM classification.
    • SVM model achieved 86.2% accuracy when comparing cardiomyopathy patients (CMP) to controls (CON).
    • Classification accuracy, sensitivity, and specificity were high for both comparisons.

    Conclusions:

    • Cardio, respiratory, and vascular variability analysis effectively classifies cardiomyopathy subtypes.
    • Physiological variability patterns differ significantly between ICM and DCM patients.
    • Patients show impaired regulation of vascular variability, indicating limited baroreflex response.

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