What Does Bioelectrical Impedance Spectroscopy (BIS) Measure?

Part of the Basic Life Sciences book series (BLSC, volume 60)


The resistance of the human body to the flow of an alternating current is related to the volume of fluid in the body;l acute changes in fluid status alter body resistance 2,3 Experiments with infusion of saline4 have shown that bioelectrical impedance analysis is sensitive enough to detect minimal alterations in body fluid volume. Impedance methods can measure both total body water and extracellular fluid (ECF) in humans on the basis of the electrical properties of individual tissues.


Total Body Water Sodium Bromide Water Space Minimal Alteration Body Fluid Volume 
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Copyright information

© Springer Science+Business Media New York 1993

Authors and Affiliations

  1. 1.The Research InstituteThe Hospital for Sick ChildrenTorontoCanada
  2. 2.Department of Paediatrics, Nutritional Sciences and SurgeryUniversity of TorontoTorontoCanada

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