Photoplethysmographic characterization of vascular tone mediated changes in arterial pressure: an observational study

Tusman, Gerardo; Acosta, Cecilia; Pulletz, Sven; Böhm, Stephan H.; Ballarin, Virginia L.; Arca, Jorge Martinez; Madorno, Matías; Suárez-Sipmann, Fernando

doi:10.1007/s10877-018-0235-z

Cited by 39 publications

(18 citation statements)

References 53 publications

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“…8.b. According to the observation study [49], the PPG waveform is classified according to the amplitude and the position of the diacritic notch. Among these classes, vasodilatation case exhibits low or negative notch, hence, this class usually experiences poor segmentation.…”

Section: ) Ppg/abp Segmentationmentioning

confidence: 99%

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

et al. 2022

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This work is supported in part by the Information Technology Industry Development Agency (ITIDA) under number ARP2019.R27.4.ABSTRACTA growing attention is given to exploiting Photoplethysmography (PPG) signals in noninvasively measuring many physiological vital signs. Many machine deep learning models were trained for predicting the continuous arterial blood pressure (ABP) or just the systolic and diastolic blood pressure (BP) values based on a public database. However, jointly cleaning the PPG-ABP dataset that is the most critical pre-processing step for training quality is still in need for more investigations. There is a considerable amount of anomaly data that has to be excluded before any training stage. This paper introduces a two-level joint PPG-ABP cleaning technique conducted at a signal level and per-beat level. Many quality metrics have been checked successively for excluding improper data. These metrics achieve a coarse cleaning step. Finally, principal component analysis (PCA) is exploited for fine cleaning the remaining data from the former stage. The cleaning efficiency is evaluated by measuring its impact on the deep-learning-based BP estimation models. The trained model based on our cleaned data shows performance enhancement in terms of prediction error and the correlation between the predicted and ground-truth BP. Segmented and cleaned PPG/ABP dataset will be publicly available at both signal level and beat level. Based on the simulation results, the proposed cleaning technique enhances the standard deviation of the prediction error of systolic and diastolic blood pressure by 11.68 % and 10.81 %, respectively. Also, it enhances the mean absolute error of the prediction of systolic and diastolic blood pressure by 14.79 % and 11.70 %, respectively.

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Section: ) Ppg/abp Segmentationmentioning

confidence: 99%

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

et al. 2022

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“…An observational study in 15 cardiac surgery patients was performed by Tusman et al [23] to evaluate, whether the photoplethysmography (PPG) signal can be used to detect changes in arterial blood pressure and vascular tone. The systemic vascular resistance and vascular compliance (stroke volume/PP) were used as surrogates for vascular tone.…”

Section: Cardiovascular Physiologymentioning

confidence: 99%

Journal of Clinical Monitoring and Computing end of year summary 2019: hemodynamic monitoring and management

Saugel

Critchley

Kaufmann

et al. 2020

J Clin Monit Comput

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“…the fingertip) before being acquired by the photodetector. The change in absorbance is used to calculate not only parameters such as oxygen saturation, heart rate, respiratory rate, hypo-and hypervolemia, but also to estimate blood pressure and stress level [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of conductive embroidered threads for I²C sensors in microcontroller-based wearable electronics

Volpes

Valenti

Zafar

et al. 2023

Flex. Print. Electron.

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In recent years, the importance of flexible and textile electronics in the field of wearable devices has continuously increased, as they are expected to replace conventional wires that exhibit limited resistance to the mechanical stress occurring in on-body applications. Wearable Health Devices (WHDs) can provide physiological information about various body parts and employ distributed sensor networks. Among the sensors typically integrated within WHDs, those based on the I2C communication protocol are very common and exploit signals transmitted at frequencies up to hundreds of kilohertz. Therefore, robust communication is required to guarantee a proper transmission of the signal at those frequencies. In this context, we have realized embroidered conductive threads exhibiting a lower resistance, appositely designed to replace conventional wires in a microcontroller-based wearable device employing I2C sensors. A commercial conductive thread (silver coated polyamide) was used to embroider the conductive lines on to cotton fabric. Preliminary measurements were performed to characterize the response of these materials to signals typically operated within the I2C communication protocol at different path lengths. Resistive measurements have also been performed to sitmulate different environmental conditions, that is, temperature, the effect of sweating, and repeated washing cycles, also apply mechnical stress, i.e twisting, with promising results that validate our conductive paths for digital signal communication.

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Photoplethysmographic characterization of vascular tone mediated changes in arterial pressure: an observational study

Cited by 39 publications

References 53 publications

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

Journal of Clinical Monitoring and Computing end of year summary 2019: hemodynamic monitoring and management

Feasibility of conductive embroidered threads for I²C sensors in microcontroller-based wearable electronics

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Photoplethysmographic characterization of vascular tone mediated changes in arterial pressure: an observational study

Cited by 39 publications

References 53 publications

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

Beat-Based PPG-ABP Cleaning Technique for Blood Pressure Estimation

Journal of Clinical Monitoring and Computing end of year summary 2019: hemodynamic monitoring and management

Feasibility of conductive embroidered threads for I2C sensors in microcontroller-based wearable electronics

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Product

Resources

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Feasibility of conductive embroidered threads for I²C sensors in microcontroller-based wearable electronics