Presentation Title

Bioimpediance technology: Use and repeatability in canines

Faculty Mentor

Cord Brundage

Start Date

17-11-2018 8:30 AM

End Date

17-11-2018 10:30 AM

Location

CREVELING 14

Session

POSTER 1

Type of Presentation

Poster

Subject Area

biological_agricultural_sciences

Abstract

Bioimpedance technology uses an electrical current of 800 uA and a frequency of 50kHz to measure the voltage drop between electrodes placed across the body. The impedance value is generally high in fat tissue and low in lean tissue where electrolytes and intracellular fluid are contained. Bioimpedance technology has potential for becoming an efficient and practical tool in the field of veterinary medicine. Body condition scores are often assigned to an animal by a veterinarian as a subjective method to determine the general health of the animal. Bioimpedance technology gives rise to an objective and quantitative way of evaluating body condition. The technology coefficients used by the instrument for calculations were a 1.05 for body density, 0.732 for the hydration constant, 1.00 for cylindrical body proportion, 324.9 for extracellular fluid resistivity and 751.8 for intracellular fluid resistivity. Using an electrical impulse and four alligator clips (two sense and two current leads) the Impedivet instrument gives specific body measurements including: fat mass, fat-free mass, and intracellular and extracellular fluid. The novelty of the technology requires tests to confirm accuracy and repeatability of the device. The goal of this project is to determine the repeatability of the device by taking multiple measurements from a large group of canines. The blue and black lead will be placed in the right axilla and the red and yellow lead in the right inguinal area of each subject in a standing position and multiple measurements will be taken.

Summary of research results to be presented

Five measurements on two different locations (n=5) were measured to determine repeatability and variation between lead placements. Of the 25 measurements of the left axilla and inguinal area there was an average different of 6.97%. Between the 25 measurements of the right axilla and left axilla there was an average difference of 4.73%. Both locations resulted in similar repeatability; however, all values of fat mass and free fat mass were grossly overestimated. This is most likely due to the incorrect resistivity coefficient used in the instrument. For further analysis, a resistivity coefficient for canines will be determined based on a literature search, and subsequent measurements will be taken and evaluated for accurate body values.

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Nov 17th, 8:30 AM Nov 17th, 10:30 AM

Bioimpediance technology: Use and repeatability in canines

CREVELING 14

Bioimpedance technology uses an electrical current of 800 uA and a frequency of 50kHz to measure the voltage drop between electrodes placed across the body. The impedance value is generally high in fat tissue and low in lean tissue where electrolytes and intracellular fluid are contained. Bioimpedance technology has potential for becoming an efficient and practical tool in the field of veterinary medicine. Body condition scores are often assigned to an animal by a veterinarian as a subjective method to determine the general health of the animal. Bioimpedance technology gives rise to an objective and quantitative way of evaluating body condition. The technology coefficients used by the instrument for calculations were a 1.05 for body density, 0.732 for the hydration constant, 1.00 for cylindrical body proportion, 324.9 for extracellular fluid resistivity and 751.8 for intracellular fluid resistivity. Using an electrical impulse and four alligator clips (two sense and two current leads) the Impedivet instrument gives specific body measurements including: fat mass, fat-free mass, and intracellular and extracellular fluid. The novelty of the technology requires tests to confirm accuracy and repeatability of the device. The goal of this project is to determine the repeatability of the device by taking multiple measurements from a large group of canines. The blue and black lead will be placed in the right axilla and the red and yellow lead in the right inguinal area of each subject in a standing position and multiple measurements will be taken.