Anomaly in respiratory sinus arrhythmia - Multiple heart rate variability cycles within each breathing cycle at low breath rates with breath holds

Ramakrishnan, AG and Adarsh, A and Sharma, K and Pradeep, KG (2020) Anomaly in respiratory sinus arrhythmia - Multiple heart rate variability cycles within each breathing cycle at low breath rates with breath holds. In: Proceedings of CONECCT 2020 - 6th IEEE International Conference on Electronics, Computing and Communication Technologies, 2 - 4 July 2020, Bangalore.

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Abstract

By recording ECG and breath signals from 10 normal male subjects during symmetric breathing at controlled rates, including breath hold to achieve low breathing rates, heart rate variability (HRV) and variations in the peak to peak amplitude of the R to S wave are analyzed. The subjects synchronized their breathing rate to an auditory metronome, which was programmed to generate two equispaced tones for every cycle, at rates of 60 down to 2 cycles per minute. The amplitude of the RS-wave varies negatively correlated to the respiratory signal. The respiration-inspired fluctuations in the heart rate continue during the breath-held intervals too, and the variations undergo two or three cycles in every respiration cycle for very low breathing rates. On the other hand, R-S amplitude does not change significantly during breath hold before or after inspiration. Thus, for very slow breathing, the RS-wave amplitude spectrum has a peak at the respiration rate mainly, whereas the HRV spectrum has significant peaks at the second and third harmonics of the respiration rate also. © 2020 IEEE.

Item Type:	Conference Paper
Publication:	Proceedings of CONECCT 2020 - 6th IEEE International Conference on Electronics, Computing and Communication Technologies
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Shear waves, Breathing cycle; Heart rate variability; Peak to peak amplitudes; Respiration cycle; Respiration rate; Respiratory signals; Respiratory sinus arrhythmia; Second and third harmonics, Heart
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	05 Feb 2023 04:45
Last Modified:	05 Feb 2023 04:45
URI:	https://eprints.iisc.ac.in/id/eprint/79842

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