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An improved method for R-peak detection by using Shannon energy envelope

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Abstract

R-peaks in electrocardiogram (ECG) play a vital role in diagnosis of heart rhythm irregularities and also estimating heart rate variability. However, almost all existing R-peak detectors suffer from the non-stationary of both QRS morphology and noise. To overcome these difficulties, we propose a four-stage improved method to detect R-peak using Shannon energy envelope. In the first stage, noise is suppressed and QRS complex is enhanced by using band pass filter, first order differentiation, and amplitude normalization. In the second stage, Shannon energy envelope is extracted. In the third stage, peak is estimated without considering any threshold amplitude. In the final stage, true R-peaks are detected. Our proposed R-peak detection method is validated using 48 first channel ECG records of the MIT-BIH arrhythmia database with the accuracy of 99.84%, sensitivity of 99.95% and positive predictability of 99.88%. Our proposed method outperforms other well-known methods in case of pathological ECG signals.

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Authors and Affiliations

  1. Department of Electrical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India

    M Rakshit, D Panigrahy & P K Sahu

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  1. M Rakshit
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  2. D Panigrahy
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  3. P K Sahu
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Correspondence to D Panigrahy.

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Rakshit, M., Panigrahy, D. & Sahu, P.K. An improved method for R-peak detection by using Shannon energy envelope. Sādhanā 41, 469–477 (2016). https://doi.org/10.1007/s12046-016-0485-8

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  • DOI: https://doi.org/10.1007/s12046-016-0485-8

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