The indicator dilution method can be used to determine the size of body fluid compartments see chapter 14. After allowing sufficient time for uniform distribution of the indicator throughout the compartment a plasma sample is collected.
Chapter 25 Body Fluid Compartments Dr Marko Ljubkovic
Measurement of body fluids. Plasma is the liquid component of blood. Another way to measure body water is through dilution and equilibration using mass spectrometry which measures the abundance of water in breath samples from an individual. It is a thick fluid containing 55 blood 90 water and 8 proteins. One way to get an uncertain estimate is by calculation based on body weight and urine output. This is estimated by measuring the volume of distribution of isotopes of water. The main components of blood include.
Theoretically its possible to measure the size of each of the body fluid compartments by injecting substances that will stay in one compartment only the substance that attach to object. A known amount of a substance the indicator which should be confined to the compartment of interest is administered. The major fluid compartments of the body electrolyte concentrations of body fluids are usually expressed in milliequivalents per liter meql a measure of the number of electrical charges in one liter of solution. Rapid mixing of tritiated water throughout all compartments occurs during a 3 to 4 hour equilibration period. Tritium oxide tho is used because it is a weak beta emitter making it easy to measure in a liquid scintillation counter. The different types of body fluids include.
222 total body water.
Gallery of Measurement Of Body Fluids
