A chest-based continuous cuffless blood pressure method: Estimation and evaluation using multiple body sensors

Heydari, Fatemeh; Ebrahim, Malikeh Pour; Redouté, Jean-Michel; Joe, Keith; Walker, Katie; Yuce, Mehmet Rasit

doi:10.1016/j.inffus.2019.07.001

Cited by 31 publications

(23 citation statements)

References 17 publications

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“…Last, all these contributions allowed to obtain mean absolute differences of diastolic, systolic and mean BP, with respect to the reference of 4.36, 6.96 and 4.58 mmHg, respectively. From a scientific point of view, we have confirmed that the model embedding PAT and the heart rate provided BP results, attained upon subject-dependent calibration of the model parameters for a cohort of 20 healthy subjects, in a agreement with those reported in the literature adopting similar models [4], [12], [21], [22], [42], [43]. In particular, according to the BHS standard, our prototype was consistent with the grade A in the estimation of DBP and MAP values overcoming the results obtained by a similar setup [12], which featured grade B in the estimation of the MAP value.…”

Section: Discussionsupporting

confidence: 86%

“…PPG signal is acquired using a LED coupled to a photodiode, which are placed on a superficial skin site like the fingertip, exploiting transmissive PPG, or on the wrist or sternum, exploiting, instead, reflective PPG. In particular, the reliability of the reading at the capillary arteries of the sternum surface was supported by the fact that the blood pulse speed is mainly related to the propagation characteristics of the elastic central arteries (aorta and carotid) [20]- [22]. This makes the PAT measured at the sternum consistent with the mathematical model in (3) that holds mainly for central arteries.…”

Section: Introductionmentioning

confidence: 72%

“…However, they are not able to address continuous long-term measurements, which are fundamental for diagnostic monitoring [4], [14]. This issue was addressed originally by a chest sensor as a proof-of-concept [21] and only recently feasibility studies have been proposed [22], [31]. Some technical (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Chest Wearable Apparatus for Cuffless Continuous Blood Pressure Measurements Based on PPG and PCG Signals

Marzorati

Bovio²,

Salito

et al. 2020

IEEE Access

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This paper describes an integrated chest wearable apparatus for continuous blood pressure (BP) measurements exploiting the heart-rate (HR) and the pulse arrival time (PAT) in a modified Moens-Korteweg model. The device embeds a miniaturized gas pressure sensor to record the phonocardiogram (PCG) of the heart sounds, a LED-photodiode pair to detect the photoplethysmogram (PPG) of the blood flow wave, a µcontroller, a wireless communication module and the power supply. With the proposed device no active participation would be required from human subjects for BP measurements, since the HR and the PAT are continuously extracted from the PCG and PPG signals. Dedicated signal processing algorithms were developed and implemented off-line to extract both HR and PAT. A subject-specific calibration protocol of the BP model was designed and implemented. The calibration and validation of the apparatus were performed on a cohort of 20 healthy subjects. A GIMA ABPM pressure Holter was chosen as reference device, and 8 measurements points, evenly distributed over a 10-minute interval, were used for model calibration for each subject. The range of DBP and SBP measurements were 52-85 mmHg and 90-141 mmHg, respectively. The results from Bland-Altman analysis showed that the mean±1.96SD for the estimated diastolic, systolic, and mean BP with the proposed method against reference were 0.01±7.55, 1.47±3.76, 0.74±4.38 mmHg, respectively. The corresponding mean absolute differences (MAD) were 3.06, 1.83, and 1.80 mmHg. These results demonstrates that the acquisition apparatus is able to continuously estimate the BP with an accuracy comparable to traditional cuff-based devices. INDEX TERMS Wearable device, blood pressure measurement, pulse transit time (PTT), pulse arrival time (PAT), integrated system.

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 72%

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Chest Wearable Apparatus for Cuffless Continuous Blood Pressure Measurements Based on PPG and PCG Signals

Marzorati

Bovio²,

Salito

et al. 2020

IEEE Access

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“…As a second step, the HR and R-peaks are detected from ECG signals using another algorithm (Heydari et al, 2020). Using the landmarks of BImp and PPG, two PATs are defined.…”

Section: Signal Processing and Feature Extractionmentioning

confidence: 99%

“…The corresponding beat-to-beat PTTs are also derived from the ECG, CWR, BImp and PPG signals. Using predefined minimum and maximum thresholds (Ebrahim et al, 2019;Heydari et al, 2020)…”

Section: Re Sultsmentioning

confidence: 99%

Clinical study of a chest‐based cuffless blood pressure monitoring system

et al. 2020

Self Cite

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Blood pressure (BP) is one of the critical vital signs in healthcare applications. High BP or hypertension (HTN) (known as the "silent killer") is one of the biggest contributors to cardiovascular disease, and hence death, worldwide (Perkovic, Huxley, Wu, Prabhakaran, & MacMahon, 2007; Top 10 causes of death, 2018). It does this by contributing to stroke, coronary artery disease and heart failure (Top 10 causes of death, 2018). BP is indicated by the level of tension produced by the blood circulating upon the surfaces of the blood vessels, mainly the arteries (arterial BP or ABP). This pressure is generated when the flow of the blood (provided by the pumping of the heart) is resisted by the arteries. The systolic BP (SBP) is the maximum pressure created when the heart contracts or beats. The diastolic BP (DBP) is the minimum pressure, or relaxation pressure in between two heartbeats. BP is presented as the systolic pressure over the diastolic pressure or SBP/DBP (Mohrman & Heller, 2014). Globally, BP is measured by healthcare professionals as a cornerstone vital sign in the investigation and treatment of cardiovascular health (Top 10 causes of death, 2018).

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An Integrated Proposed Device to Reduce Burdens in Agriculture Through Mental-Stress Measurements

Satapathy,

Chauhan,

Sahoo

2023

Int. J. Appl. Comput. Math

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A chest-based continuous cuffless blood pressure method: Estimation and evaluation using multiple body sensors

Cited by 31 publications

References 17 publications

Chest Wearable Apparatus for Cuffless Continuous Blood Pressure Measurements Based on PPG and PCG Signals

Chest Wearable Apparatus for Cuffless Continuous Blood Pressure Measurements Based on PPG and PCG Signals

Clinical study of a chest‐based cuffless blood pressure monitoring system

An Integrated Proposed Device to Reduce Burdens in Agriculture Through Mental-Stress Measurements

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