6533b873fe1ef96bd12d4bb1

RESEARCH PRODUCT

Reliability of automated optical determination of capillary refill time

Edgars LaksaZbignevs MarcinkevicsMara BlumfeldeOskars Rubenis

subject

Hand positionTime changesLight intensitymedicine.diagnostic_testComputer scienceDecreased capillary refill timeHealthy volunteersmedicineCapillary refillMeasurement siteReliability (statistics)Biomedical engineering

description

The present study is devoted to assessment of automated optical capillary refill time determination by custom developed optoelectronic device prototype. Study comprised fifteen healthy volunteers; To induce capillary refill time changes the hand position challenge was utilized. During rest conditions slight inter-subject variation was observed: T90 (0.75±0.27 s), TSTB (2.20±0.58 s) and temperature at the measurement site (32.21±1.87 Co), however during hand position challenge results were more consistent. Rising hand substantially increased, while lowering slightly decreased capillary refill time. We conclude that automated determination of refill time have high clinical potential, however more extensive studies are required to determine reliable methodology and provide measurement guidelines.

https://doi.org/10.1364/boda.2021.jw1a.13