Can we rely on the pulse transit time - pressure relationship - models comparison

Poliński, Artur; Bujnowski, Adam; Kocejko, Tomasz; Wtorek, Jerzy

doi:10.1109/embc.2019.8857580

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…Filter The presented results should be viewed from the perspective of the accuracy of blood pressure estimation. It follows from theoretical considerations (Poliński et al 2019) that about a 1mmHg change in blood pressure changes the PTT by about 0.5 ms. Similar conclusions were drawn from experiments (Proença et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…The disadvantage of the PAT-based approach is the influence of the pre-ejection period (PEP) on the measurement results (PAT = PEP+PTT). Monitoring BP with an accuracy of a few mmHg is equivalent to achieving a resolution of PTT or PAT determination equal to a single millisecond (Proença et al 2010, Poliński et al 2019. Therefore, it is a very important to set the appropriate parameters of the measurement system to meet such requirements.…”

Section: Introductionmentioning

confidence: 99%

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Continuous blood pressure monitoring by photoplethysmography - signal preprocessing requirements based on blood flow modelling

Poliński

2023

Physiol. Meas.

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Objective. The aim of the study is to investigate the effect of the signal sampling frequency and low-pass filtering on the accuracy of the localisation of the fiducial points of the photoplethysmographic signal (PPG), and thus on the estimation of the blood pressure (i.e. the accuracy of the estimation). Approach. Statistical analysis was performed on 3,799 data samples taken from a publicly available database. Four PPG fiducial points of each sample signal were examined in the study. Main results. Simulation suggests that for noise-free data, cubic spline interpolation causes the sampling frequency (in the considered range of 62.5–500 Hz) to have only limited influence on localisation of the fiducial point. Better results were obtained for the pulse transit time (PTT) than pulse arrival time (PAT) approach. The acceptable filter band depends on the selected fiducial point and PAT or PTT approach. The best results were obtained for the tangent fiducial point. Significance. The presented results make it possible to estimate the minimum requirements for the sampling frequency and filtering of the PPG signal in order to obtain a reliable estimation of blood pressure.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Continuous blood pressure monitoring by photoplethysmography - signal preprocessing requirements based on blood flow modelling

Poliński

2023

Physiol. Meas.

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“…Second, we apply the LF algorithm (22)(23)(24)(25)(26) to (27) to obtain a solution, which we compare to Equations (28) and (29). The errors for Equation (27) and several values of h = x 0,1 − x 0,0 are presented in Table 1.…”

Section: Examplementioning

confidence: 99%

“…24 Another significant application of blood flow modeling is the estimation of more accurate formula for relation between pulse transit time and blood pressure. 25 Knowing such a relation, the photopletysmography can be used as a continuous, noninvasive, and unobtrusive method for monitoring blood pressure with high accuracy. These in turn can help daily monitoring of hypertension, which is a risk factor for many diseases.…”

Section: Introductionmentioning

confidence: 99%