Pulse rate variability compared with heart rate variability in children with and without sleep disordered breathing

Abstract

Heart Rate Variability (HRV), the variation of time intervals between heartbeats, is one of the most promising and widely used quantitative markers of autonomic activity. Traditionally, HRV is measured as the series of instantaneous cycle intervals obtained from the electrocardiogram (ECG). In this study, we investigated the estimation of variation in heart rate from a photoplethysmography (PPG) signal, called pulse rate variability (PRV), and assessed its accuracy as an estimate of HRV in children with and without sleep disordered breathing (SDB). We recorded raw PPGs from 72 children using the Phone Oximeter, an oximeter connected to a mobile phone. Full polysomnography including ECG was simultaneously recorded for each subject. We used correlation and Bland-Altman analysis for comparing the parameters of HRV and PRV between two groups of children. Significant correlation (r > 0.90, p < 0.05) and close agreement were found between HRV and PRV for mean intervals, standard deviation of intervals (SDNN) and the root-mean square of the difference of successive intervals (RMSSD). However Bland-Altman analysis showed a large divergence for LF/HF ratio parameter. In addition, children with SDB had depressed SDNN and RMSSD and elevated LF/HF in comparison to children without SDB. In conclusion, PRV provides the accurate estimate of HRV in time domain analysis but does not reflect precise estimation for parameters in frequency domain.

Robust Pulse Rate Variability Analysis from Reflection and Transmission Photoplethysmographic Signals

“…In this paper, a comparison of HRV from ECG and PRV from reflection and transmission PPG during tilt test has been done to examine whether PPG signals acquired with different techniques can be used as a surrogate signal for ECG in HRV analysis, as has been shown in other studies [5], [6], [7]. Both techniques to acquire the PPG signal have been studied using signals recorded on the finger by transmission mode, and on the forehead by reflection mode.…”

Comparison of Pulse Rate Variability and Heart Rate Variability for Hypoglycemia Syndrome

“…As seen in the following explanation of the algorithm, our algorithm will ignore the smaller one of the two possible local maximums those that are closer than min_p. Also, it is particularly impossible to not find a local maximum in the range of max_p [33]. The explanation of the algorithm for P waves is as follows: 1.…”

Correntropy-Based Pulse Rate Variability Analysis in Children with Sleep Disordered Breathing

“…Thus, analysis of heart rate variability (HRV) has been investigated as a possible predictor of OSA [5][6][7]. Studies have shown that OSA affects the normal variation of heart rate and that both HRV and pulse rate variability (PRV), a surrogate measure of HRV estimated from the photoplethysmogram (PPG) [8], may assist with the identification of OSA events [9,10].…”