Abstract
Heart rate variability (HRV) is a widely used measure to assess emotional arousal and stress level. HRV is conventionally determined based on the beat-to-beat intervals (duration of heart cycles) calculated as the time difference between successive R-peaks in the ECG signal. However, the heart cycle begins with atrial depolarization, therefore, the onset of the P-wave (Ponset) is a physiologically more appropriate fiducial point to define heart cycles. This paper investigates how the result of HRV calculation changes if the duration of heart cycles is measured using the onset of P-waves instead of R-peaks. Measurements containing ECG signals recorded in Einthoven II lead and one measurement containing simultaneously recorded intracardiac electrograms and surface ECG signals were used. Our results suggest that HRV values characterized by the pNN0_20, pNN20_50, pNN50 parameters may differ by more than 5 percentage points (pp) depending on whether the onset of P-waves or R-peaks are used as fiducial points.
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Acknowledgement
The research has been supported by the European Union, co-financed by the European Social Fund (EFOP-3.6.2-16-2017-00013).
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Nagy, P., Jobbágy, Á. (2021). Heart Rate Variability Calculation Using Heart Periods Measured Between Consecutive Ponset Points. In: Jarm, T., Cvetkoska, A., Mahnič-Kalamiza, S., Miklavcic, D. (eds) 8th European Medical and Biological Engineering Conference. EMBEC 2020. IFMBE Proceedings, vol 80. Springer, Cham. https://doi.org/10.1007/978-3-030-64610-3_69
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DOI: https://doi.org/10.1007/978-3-030-64610-3_69
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