Dataset Information


Optical Fibre Sensor for Simultaneous Measurement of Capillary Refill Time and Contact Pressure.

ABSTRACT: The widely applied capillary refill time (CRT) measurement is currently performed by manually applying pressure and using a stopwatch to record the time taken for the skin to recover its normal colour after a blanching pressure is applied. This method is highly subjective and observer-dependent. This paper presents a new, integrated optical sensor probe, combining monitoring of the capillary refilling process with the blanching pressure applied. The sensor consists of an optical fibre-based reflectance photoplethysmography (PPG) sensor to measure the reflected light signal, as well as a fibre Bragg grating (FBG) to measure the applied blanching pressure and to indicate the time when pressure is released. This sensor was applied to calculate the CRT (1.38 ± 0.66 s) of 10 healthy adult volunteers with (55.2 ± 21.8 kPa) blanching pressures. The form of the capillary refilling data was investigated by fitting using an exponential regression model (R2 > 0.96). The integrated probe has the potential to improve the reliability of CRT measurements by standardising the optimum duration and magnitude of the pressure.


PROVIDER: S-EPMC7085692 | BioStudies | 2020-01-01

REPOSITORIES: biostudies

Similar Datasets

2019-01-01 | S-EPMC6697974 | BioStudies
2020-01-01 | S-EPMC7574820 | BioStudies
2019-01-01 | S-EPMC6515294 | BioStudies
2019-01-01 | S-EPMC6501379 | BioStudies
2017-01-01 | S-EPMC5703524 | BioStudies
2015-01-01 | S-EPMC4573516 | BioStudies
2020-01-01 | S-EPMC7606372 | BioStudies
2020-01-01 | S-EPMC7450018 | BioStudies
1000-01-01 | S-EPMC5590033 | BioStudies
1000-01-01 | S-EPMC6263952 | BioStudies