A Ubiquitous Real-Time Motion Artifact Rejection technique for Remote NIBP Monitoring of Hypertensive Patients

Hasnain, Ali; Awan, Mudaser; Farooq, Muddassar

doi:10.1007/978-3-642-03885-3_253

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Recently, there have been several attempts to improve the performance of the oscillometric algorithms and remove artifacts by incorporating additional sensors such as ECG, pulse oximeter, and accelerometer within the cuff [24], [59], [177]- [179]. In [59], oscillometric pulses were recorded in synchrony with the patient's ECG.…”

Section: Artifact Removal Using Auxiliary Sensorsmentioning

confidence: 99%

“…When the two adjacent oscillometric pulses were not significantly different, the controller reduced the cuff pressure by a fixed amount. In [179], an accelerometer was mounted on the cuff wrapped over the upper arm in order to determine the noise superimposed over the oscillometric signal when the patient is walking. An FIR least mean squares adaptive filter that takes into account the feedback from the accelerometer was used to suppress the motion artifact in the recorded cuff deflation curve.…”

Section: Artifact Removal Using Auxiliary Sensorsmentioning

confidence: 99%

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Oscillometric Blood Pressure Estimation: Past, Present, and Future

Forouzanfar

Dajani

Groza

et al. 2015

IEEE Rev. Biomed. Eng.

156

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The use of automated blood pressure (BP) monitoring is growing as it does not require much expertise and can be performed by patients several times a day at home. Oscillometry is one of the most common measurement methods used in automated BP monitors. A review of the literature shows that a large variety of oscillometric algorithms have been developed for accurate estimation of BP but these algorithms are scattered in many different publications or patents. Moreover, considering that oscillometric devices dominate the home BP monitoring market, little effort has been made to survey the underlying algorithms that are used to estimate BP. In this review, a comprehensive survey of the existing oscillometric BP estimation algorithms is presented. The survey covers a broad spectrum of algorithms including the conventional maximum amplitude and derivative oscillometry as well as the recently proposed learning algorithms, model-based algorithms, and algorithms that are based on analysis of pulse morphology and pulse transit time. The aim is to classify the diverse underlying algorithms, describe each algorithm briefly, and discuss their advantages and disadvantages. This paper will also review the artifact removal techniques in oscillometry and the current standards for the automated BP monitors.

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Section: Artifact Removal Using Auxiliary Sensorsmentioning

confidence: 99%

Section: Artifact Removal Using Auxiliary Sensorsmentioning

confidence: 99%

Oscillometric Blood Pressure Estimation: Past, Present, and Future

Forouzanfar

Dajani

Groza

et al. 2015

IEEE Rev. Biomed. Eng.

156

View full text Add to dashboard Cite

show abstract

Characterization of a double probe for local pulse wave velocity assessment

Pereira¹,

Pereira²,

Almeida³

et al. 2010

Physiol. Meas.

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Local pulse-wave velocity (PWV) is an accurate indicator of the degree of arteriosclerosis (stiffness) in an artery, providing a direct characterization of the properties of its wall. Devices currently available for local PWV measurement are mainly based on ultrasound systems and have not yet been generalized to clinical practice since they require high technical expertise and most of them are limited in precision, due to the lack of reliable signal processing methods. The present work describes a new type of probe, based on a double-headed piezoelectric (PZ) sensor. The principle of PWV measurement involves determination of the pulse transit time between the signals acquired simultaneously by both PZs, placed 23 mm apart. The double probe (DP) characterization is accomplished in three main studies, carried out in a dedicated test bench system, capable of reproducing a range of clinically relevant properties of the cardiovascular system. The first study refers to determination of the impulse response (IR) for each PZ sensor, whereas the second one explores the existence of crosstalk between both transducers. In the last one, DP time resolution is inferred from a set of three different algorithms based on (a) the maximum of cross-correlation function, (b) the maximum amplitude detection and (c) the zero-crossing point identification. These values were compared with those obtained by the reference method, which consists of the simultaneous acquisition of pressure waves by means of two pressure sensors. The new probe demonstrates good performance on the test bench system and results show that the signals do not exhibit crosstalk. A good agreement was also verified between the PWV obtained from the DP signals (19.55 ± 2.02 ms(-1)) and the PWV determined using the reference method (19.26 ± 0.04 ms(-1)). Although additional studies are still required, this probe seems to be a valid alternative to local PWV stand-alone devices.

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A Ubiquitous Real-Time Motion Artifact Rejection technique for Remote NIBP Monitoring of Hypertensive Patients

Cited by 2 publications

References 4 publications

Oscillometric Blood Pressure Estimation: Past, Present, and Future

Oscillometric Blood Pressure Estimation: Past, Present, and Future

Characterization of a double probe for local pulse wave velocity assessment

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