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RESEARCH PRODUCT
Clinical evaluation of automated capillary refill time estimation in dogs and cats
Eva ŠTrucJānis SpigulisBlaž Cugmassubject
dogsgenetic structurespulse oximetermicrocirculationVideo cameraCapillary refill time01 natural scienceslaw.invention010309 optics03 medical and health sciences0302 clinical medicinelawTime estimationPhotoplethysmogram0103 physical sciencesMedicineCATSmedicine.diagnostic_testPulse (signal processing)business.industrycatsRepeatabilityCapillary refill3. Good health:NATURAL SCIENCES::Physics::Atomic and molecular physics [Research Subject Categories]capillary refill testphotoplethysmographybusinessClinical evaluation030217 neurology & neurosurgeryBiomedical engineeringdescription
In this study, we clinically evaluated a pulse oximeter-based device for automated capillary refill time (CRT) estimation in dogs and cats. CRT can reveal conditions like shock or anemia in dogs and cats. However, visual CRT estimation has low repeatability, and the available optical systems for automated estimation are not suitable for pets. We evaluated a custom-made portable CRT measuring device on various measurement sites of 12 dogs and 11 cats with parallel visual CRT estimation on the gum by treating veterinarian. The capillary refill was also recorded by a video camera for reference. The visual and video procedures were moderately correlated with the coefficient of 0.61; visual CRT values were on average for 0.18 s longer than the reference. On average, ~32% of measurements with the proposed device were successful. The rest failed due to excessive pigmentation, motion artifacts, and other pressure-induced effects. The measurement sites of the metacarpal pad, digit, and tail were moderately correlated with the reference values with coefficients of 0.53, 0.58, and 0.42, respectively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-26 |