Search results for "Peripheral perfusion"

showing 2 items of 2 documents

Challenges in automated estimation of capillary refill time in dogs

2018

Capillary refill time (CRT) is a part of the cardiorespiratory examination in dogs. Changes in CRT can reflect pathological conditions like shock or anemia. Visual CRT estimation has low repeatability; therefore, optical systems for automated estimation have recently appeared. Since existing systems are unsuitable for use in dogs, we designed a simple, small and portable device, which could be easily used at veterinary clinic. The device was preliminarily tested on several measurement sites in two dogs. Not all measurement sites were suitable for CRT measurements due to underlying tissue optical and mechanical properties. The CRT measurements were possible on the labial mucosa, above the st…

Materials sciencegenetic structuresmedicine.diagnostic_testpulse oximeterLight penetration:NATURAL SCIENCES::Physics [Research Subject Categories]RepeatabilityCapillary refill timeCapillary refill01 natural sciences010309 opticsmonitoring03 medical and health sciencesDogs0302 clinical medicinePeripheral perfusion030202 anesthesiologyPhotoplethysmogram0103 physical sciencesmedicineCapillary refill time veterinary medicine dogs monitoring pulse oximeter photoplethysmographyphotoplethysmography:VETERINARY MEDICINE [Research Subject Categories]Biomedical engineeringOptical Diagnostics and Sensing XVIII: Toward Point-of-Care Diagnostics
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Optical Studies of the Capillary Refill Kinetics in Fingertips

2009

A new methodology for temporal analysis of the capillary refill processes by means of photoplethysmography (PPG) contact probe operating in the blue region of spectrum has been developed. A corresponding prototype device for finger measurements has been created and clinically tested. Results demonstrated that both AC and DC components of the blue PPG bio-signals are sensitive to the capillary occlusion and refill. Real-time measurements of the skin capillary refill kinetics by this technology can be used for noninvasive diagnostics of the peripheral perfusion disorders.

medicine.diagnostic_testPeripheral perfusionbusiness.industryCapillary actionPhotoplethysmogramKineticsmedicineSkin capillaryCapillary refillbusinessBiomedical engineering
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