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Physiological Parameter Monitoring / Physiological Parameter Monitoring

ImpediVET

ImpediMed
VetBIS1
ImpediVET is a single-channel, tetrapolar bioimpedance spectroscopy (BIS) device that measures fluid status and tissue composition for veterinary applications—from laboratory research to clinic. The device has been used on species as varied as echidnas, fish, cows, crocodiles, turtles, and seals. ImpediMed provides species-specific information for rats, mice, and horses as well as the flexibility to enter user-defined species information.

Description

Overview

ImpediVET scans 256 frequencies between 3 kHz and 1000 kHz and uses Cole modeling with Hanai mixture theory to determine total body water, extracellular fluid and intracellular fluid. From there, fat-free mass and fat mass are calculated on the device. Validation studies confirm that BIS correlates highly with isotope dilution analysis, DXA and other reference methods. Data such as characteristic frequency, characteristic impedance and cell membrane capacitance are not available from any other bioimpedance technology.


Features

  • Product Highlights

  • Single-channel, tetrapolar configuration

  • Scans 256 discrete frequencies, between 3 kHz and 1000 kHz

  • Measurements take less than one second

  • Single-reading, interval and continuous measurement modes

  • Low-noise data generation

  • Access to all raw impedance data


Journal Citations

Bowen, et al, Estimation of Total Body Water in Harbor Seals: How useful is bioelectrical impedance analysis? Marine Mammal Science, 1998. 14:765-777

Cornish, et al, Alteration of the extracellular and total body water volumes measured by multiple frequency bioelectrical impedance analysis (MFBIA). Nutrition Research, 1994. 14(5): p. 717-727.

Cornish, et al, Measurement of extracellular and total body water of rats using multiple frequency bioelectrical impedance analysis. Nutrition Research, 1992. 12: p. 657-666.

Elliott, D.A., et al., Extracellular water and total body water estimated by multifrequency bioelectrical impedance analysis in healthy cats: a cross-validation study. J Nutr, 2002. 132(6 Suppl 2): p. 1760S-2S.

Elliott, D.A., et al., Evaluation of multifrequency bioelectrical impedance analysis for the assessment of extracellular and total body water in healthy cats. J Nutr, 2002. 132(6 Suppl 2): p. 1757S-9S.

Fielding, C.L., et al., Use of multifrequency bioelectrical impedance analysis for estimation of total body water and extracellular and intracellular fluid volumes in horses. Am J Vet Res, 2004. 65(3): p. 320-6.

Goode, T.L. and H.J. Klein, Miniaturization: an overview of biotechnologies for monitoring the physiology and pathophysiology of rodent animal models. Ilar J, 2002.43(3): p. 136-46.

Hall, C.B., et al., Determination of rat body composition using bioelectrical impedance analysis. Nutr. Rep. Int. 39:627-633.94

Skalicky, M., et al, Housing conditions influence the survival and body composition of ageing rats. Exp Gerontol, 2001. 36(1): p. 159-70.

Yokoi, K., et al., Use of bioimpedance spectroscopy to estimate body water distribution in rats fed high dietary sulfur amino acids. J Nutr, 2001. 131(4): p. 1302-8.