Iranian Journal of Medical Physics

Iranian Journal of Medical Physics

Three-dimensional Phase Space Characteristics of Electrocardiogram Segments in Online and Early Prediction of Sudden Cardiac Death

Document Type : Original Paper

Authors
Reyhane Gholamzadeh
Ateke Goshvarpour
Department of Biomedical Engineering, Imam Reza International University, Mashhad, Razavi Khorasan, Iran
10.22038/ijmp.2023.66811.2149
Abstract
Introduction: Predicting sudden cardiac death (SCD) using electrocardiogram (ECG) signals has come to the attention of researchers in recent years. One of the most common SCD identifiers is ventricular fibrillation (VF). The main objective of the present study was to provide an online prediction system of SCD using innovative ECG measures 10 minutes before VF onset. Additionally, it aimed to evaluate the different segments of the ECG signal (which depend on ventricular function) comparatively to determine the efficient component in predicting SCD. The ECG segments were QS, RT, QR, QT, and ST.
Material and Methods: After defining the ECG characteristic points and segments, innovative measures were appraised using the three-dimensional phase space of the ECG component. Tracking signal dynamics and lowering the computational cost make the feature suitable for online and offline applications. Finally, the prediction was performed using the support vector machine (SVM).
Results: Using the QR measures, SCD detection was realized ten minutes before its occurrence with an accuracy, specificity, and sensitivity of 100%.
Conclusion: The superiority of the proposed system compared to the state-of-the-art SCD prediction schemes was revealed in terms of both classification performances and computational speed.
Keywords
Electrocardiography
Death
Sudden
Cardiac
Prognosis
Online Systems
Subjects
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Iranian Journal of Medical Physics
Volume 21, Issue 2
March and April 2024
Pages 102-112

  • Receive Date 18 July 2022
  • Revise Date 04 March 2023
  • Accept Date 26 April 2023