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A New Approach for Congestive Heart Failure and Arrhythmia Classification Using Angle Transformation with LSTM

  • Research Article-Computer Engineering and Computer Science
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Abstract

Electrocardiogram (ECG) is widely used as a diagnostic method to identify various heart diseases such as heart failure, cardiac and sinus rhythms. The ECG signal analyzes the electrical activity of the heart and shows waveforms that help detect heart irregularities. A new approach is suggested for automatic identification of congestive heart failure (CHF) and arrhythmia (ARR). In this study, long short-term memory neural networks (LSTM) were used to classify ECG signals by combining LSTM and angle transform (AT) methods. The AT uses the angular information of the neighbor signals on both sides of the target signal to classify ECG signals. The new signals obtained as a result of AT conversion vary between 0 and 359. Histogram of new signals determines the inputs to the LSTM method. LSTM uses histograms to distinguish between three different conditions: ARR, CHF, and normal sinus rhythm (NSR). The proposed approach is tested on ECG signals received from MIT-BIH and BIDMC databases. The experimental results have shown that the proposed method, AT + LSTM, has achieved high success rate of classifying ECG signals. The success rate in classifying CHF, ARR, and NSR ECG signals for 70–30% training sets was observed as 98.97%. Further experiments were conducted for varying training–testing dataset ratio to demonstrate the robustness of the proposed approach, and success rates are observed between 98.56 and 100%. Another experiment regarding different values of the dR and dL distance parameters of the AT model has shown that the performance of the proposed method increases while increasing the distance value. The success rates from increasing the distance value were obtained between 98.97 and 100%. To show the effect of segment lengths of ARR, NSR, and CHF signals on classification success, these signals were divided into segments of 10,000, 5000, and 1000 lengths. Achieved success rates ranged from 97.75 to 98.97%. Considering the results, high results were observed with the AT + LSTM approach, which is generally recommended in all scenarios.

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Acknowledgments

This study was performed in Siirt University Faculty of Engineering Machine Vision (MaVi) Laboratory. The authors of this article would like to thank the staff of MaVi Laboratory for their support.

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Authors and Affiliations

  1. Siirt University, Siirt, Turkey

    Yılmaz Kaya, Fatma Kuncan & Ramazan Tekin

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  1. Yılmaz Kaya
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  2. Fatma Kuncan
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  3. Ramazan Tekin
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Correspondence to Yılmaz Kaya.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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The open-source dataset provided by Physionet (open-source) was used in the study (physionet.org).

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Kaya, Y., Kuncan, F. & Tekin, R. A New Approach for Congestive Heart Failure and Arrhythmia Classification Using Angle Transformation with LSTM. Arab J Sci Eng 47, 10497–10513 (2022). https://doi.org/10.1007/s13369-022-06617-8

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  • DOI: https://doi.org/10.1007/s13369-022-06617-8

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