On the use of fractional calculus to improve the pulse arrival time (PAT) detection when using photoplethysmography (PPG) and electrocardiography (ECG) signals
Mahtab Mohammadpoor Faskhodi, Miguel A. Garcia-Gonzalez, Mireya Fernandez-Chimeno, Federico Guede-Fernández, Marc Mateu-Mateus, Lluis Capdevila, Juan J. Ramos-Castro
TL;DR
This paper introduces a new method using fractional calculus to improve the detection of pulse arrival times from PPG and ECG signals, leading to more accurate measurements.
Contribution
A novel set of fiducial points based on fractional differintegration is proposed to enhance PAT and IBI detection.
Findings
The proposed fiducial points show better agreement between IBI and RR time series compared to traditional methods.
The standard deviation of PAT is reduced using the new method compared to existing fiducial points.
Breathing-related PAT variability is minimized with the proposed fiducial points.
Abstract
The pulse arrival time (PAT) has been considered a surrogate measure for pulse wave velocity (PWV), although some studies have noted that this parameter is not accurate enough. Moreover, the inter-beat interval (IBI) time series obtained from successive pulse wave arrivals can be employed as a surrogate measure of the RR time series avoiding the use of electrocardiogram (ECG) signals. Pulse arrival detection is a procedure needed for both PAT and IBI measurements and depends on the proper fiducial points chosen. In this paper, a new set of fiducial points that can be tailored using several optimization criteria is proposed to improve the detection of successive pulse arrivals. This set is based on the location of local maxima and minima in the systolic rise of the pulse wave after fractional differintegration of the signal. Several optimization criteria have been proposed and applied to…
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Taxonomy
TopicsPhilosophy, Ethics, and Existentialism · Hannah Arendt's Political Philosophy · Critical Theory and Philosophy