Global ETD Search
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Showing 1 to 11 of 11 for “"Pulse transit time"”.
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Development of a wearable blood pressure monitor using adaptive calibration of peripheral pulse transit time measurements
… using adaptive calibration of the measured transit time of a propagating arterial pressure wave. The device employs unique wearable sensor architecture to estimate peripheral pulse transit time measurements. This architecture is comprised of two in-line photoplethysmograph sensors one in the …
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The development of an algorithm to track blood pressure accurately based on the pulse transit time method
… novel algorithm has been developed based on the Pulse Transit Time (PTT) method, which would allow non-invasive and continuous BP measurement. PTT is defined as the time it takes the BP wave to propagate from the heart to a specified point on the body. After an initial BP measurement, PTT …
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The role of the muscle metaboreflex in patients with chronic disease
… function, and (iv) to evaluate whether pulse transit time is of use in the measurement of muscle metaboreflex activity. In our first study, we looked at a group of patients with stable COPD and found that rhythmic forearm exercise followed by post-exercise forearm ischaemia led to a …
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Linear regression model for continuous non-invasive blood pressure estimation for an ICU setting
… is complicated and contraindicated. Current pulse transit time (PTT)-based BP estimation methods are validated on healthy subjects using intermittent cuff-based BP measurements. Research indicates significant differences in invasive and noninvasive BP recordings in critically ill patients. …
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Continuous Cardiorespiratory Monitoring Using Ballistocardiography From Load Cells Embedded in a Hospital Bed
… pressure (BP) estimation -- 1) Conventional pulse transit time (PTT)-based model and 2) DL-based model, both using multi-channel BCG and the photoplethysmogram (PPG) signals to extract features. Overall, this work established methods to enable non-invasive and continuous monitoring of …
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Single-site, noninvasive, blood pressure measurements at the ear using ballistocardiogram (BCG), and photoplethysmogram (PPG), and a low-power, reflectance-mode PPG SoC
… When the BCG and PPG are used together, a time delay of the blood pulse wave can be obtained, known as the pulse transit time (PTT), from a single site of measurement. The ear-worn device is wirelessly connected to a computer for real-time data recording. A clinical test involving …
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An AFE based embedded system for physiological computing
… continuous, and cuff-less BP estimation based on pulse transit time. Being integrated, and digital, TasDiag is a single board solution with an auto calibration scheme implemented through novel signal processing and computing. The developed system is validated using real-time data from human …
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Cerebrovascular influence on brain and cognitive aging
… is based on the estimation of the arterial pulse across the whole scalp. From these estimates, three indices reflecting arterial health can be extracted: pulse amplitude, arterial compliance and pulse transit time. In their initial paper, Fabiani et al. (2014) showed that, in older adults, …
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Toward Wireless Wearable Devices Based on Biocompatible AlN Piezoelectric Sensors for Multiple Biosignal Monitoring
L'abstract è presente nell'allegato / the abstract is in the attachment