R-wave Amplitude Changes and Atypical Heart Rate Changes Accompanying Breath Hold during Low Breathing Rates

Ramakrishnan, AG and Adarsh, A (2020) R-wave Amplitude Changes and Atypical Heart Rate Changes Accompanying Breath Hold during Low Breathing Rates. In: 42nd Annual International Conferences of the IEEE Engineering in Medicine and Biology Society, 20-24 July 2020, Montreal; Canada, pp. 2667-2670.

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Abstract

This paper reports an interesting phenomenon that the amplitude of the QRS complex reduces during inhalation and increases during exhalation and the variation can exceed even 100 during very slow breathing rates (BR). The phenomenon has been consistent in all the nine normal male subjects we have studied with age ranging from 23 to 61 years. Further, at very low respiration rates which included breath holds both after inhalation and exhalation, there are highly significant second and third harmonics of the respiration frequency in the heart rate variability spectrum. On the other hand, the R-wave amplitude changes do not have any noticeable higher harmonics of the BR. Thus, the observed changes in the R-wave amplitude are neither connected to the movement of the heart nor changes in its relative position with respect to the recording electrodes nor the fluctuations in the stroke volume. © 2020 IEEE.

Item Type:	Conference Paper
Publication:	Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright of this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Engineering; Industrial engineering, Heart rate variability; Higher harmonics; Recording electrodes; Relative positions; Respiration frequency; Respiration rate; Second and third harmonics; Wave amplitudes, Heart
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	02 Dec 2020 11:23
Last Modified:	02 Dec 2020 11:23
URI:	http://eprints.iisc.ac.in/id/eprint/66684

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