Key result
A newly developed multi-array pressure sensor module for radial artery pulse wave measurement demonstrated a linear response to external pressure with a root-mean-squared error of 0.267 kPa.
Why the study?
A new pressure sensor module structure was needed to reduce errors caused by measurement position and direction during noninvasive radial artery pulse wave measurement for physiological monitoring.
Effect estimate: RMSE 0.267 kPa
A newly developed multi-array pressure sensor module demonstrates linear response and low error for noninvasive radial artery pulse wave measurement.
Promising for noninvasive radial monitoring; leaves open clinical validation in cardiovascular cohorts.
This study proposes a new structure for a pressure sensor module that can reduce errors caused by measurement position and direction in noninvasive radial artery pulse wave measurement, which is used for physiological monitoring. We have proposed a structure for a multi-array pressure sensor with a hexagonal arrangement and polydimethylsiloxane that easily fits to the structure of the radial artery, and evaluated the characteristics and pulse wave measurement of the developed sensor by finite element method simulation, a push–pull gauge test, and an actual pulse wave measurement experiment. The developed sensor has a measuring area of 17.6 × 17.6 mm2 and a modular structure with the analog front end embedded on the printed circuit board. The finite element method simulation shows that the developed sensor responds linearly to external pressure. According to the push–pull gauge test results for each channel, there were differences between the channels caused by the unit sensor characteristics and fabrication process. However, the correction formula can minimize the differences and ensure the linearity, and root-mean-squared error is 0.267 kPa in calibrated output. Although additional experiments and considerations on inter-individual differences are required, the results suggested that the proposed multiarray sensor could be used as a radial arterial pulse wave sensor.
No takes yet. Share an insight, caveat, or question.
Roh et al. (2019) studied Physiological monitoring (radial artery pulse wave measurement). Multi-array pressure sensor module with a hexagonal arrangement was evaluated on Linearity and root-mean-squared error in calibrated output (RMSE 0.267 kPa). A newly developed multi-array pressure sensor module for radial artery pulse wave measurement demonstrated a linear response to external pressure with a root-mean-squared error of 0.267 kPa.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: