Total Body Water
Total Body Water - Related Videos
09:41
Turbidity and Total Solids in Surface Water
0 Views •
2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Turbidity and total solids are related measurements addressing clarity of surface waters. Turbidity is an indirect measure of water clarity that determines the amount of light that can pass through the water. Total solids is a direct measurement of solid particles suspended in water determined by weight. High levels of turbidity and total solids are caused by soil erosion, waste discharge, runoff, or changes in...
01:19
Body Water Content and Fluid Compartments
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2024
Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
05:01
Quantifying Infectious Viruses in Water Samples Using an In Vitro Total Culturable Virus Assay
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2026
Source: Fout, G. S., Cashdollar, J. L. EPA Method 1615. Measurement of Enterovirus and Norovirus Occurrence in Water by Culture and RT-qPCR. II. Total Culturable Virus Assay. J. Vis. Exp. (2016)This video demonstrates the use of a total culturable virus assay to quantify infectious viruses in water samples. It outlines host cell inoculation, observation of cytopathic effect, and statistical quantification of infectious virus concentration.
08:27
Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies
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Cited by 33 •
2015
Rapid bioassessment protocols using benthic macroinvertebrates are often used to monitor and assess water quality. An efficient protocol involves collections of Chironomidae surface-floating pupal exuviae (SFPE). Here, techniques for field collection, laboratory processing, slide mounting, and identification of Chironomidae SFPE are described.
11:09
EPA Method 1615. Measurement of Enterovirus and Norovirus Occurrence in Water by Culture and RT-qPCR. II. Total Culturable Virus Assay
0 Views •
Cited by 9 •
2016
Here we present a procedure to measure total culturable viruses using the Buffalo Green Monkey kidney cell line. The procedure provides a standardized tool for measuring the occurrence of infectious viruses in environmental and drinking waters.
FAQs
A tracer is administered and allowed to mix with the body water. Its measured dilution then provides an estimate of the water volume in which it has distributed: greater dilution indicates a larger volume, while less dilution indicates a smaller one. This approach converts a measurable tracer concentration into an indirect assessment of body water.
Water is divided between intracellular and extracellular compartments, so a change in the total amount may reflect altered distribution as well as an overall gain or loss. This distinction matters clinically because extracellular water contributes to circulation, whereas intracellular water supports cellular function. Considering both compartments improves interpretation of fluid-balance changes.
Illness, altered kidney function, aging, and disease can influence body-water volume or its distribution. These factors may change how clinicians interpret a measurement, especially when evaluating hydration or fluid balance. Consequently, the result is most useful when considered alongside the patient’s clinical condition rather than treated as an isolated indicator.
The measurement begins with administration of a tracer that mixes with body water. After distribution, the tracer’s dilution is assessed and used to estimate the water volume. The resulting value can then be examined in relation to hydration status, fluid balance, or body-composition changes. The central measurement principle is the relationship between tracer dilution and water volume.
Clinicians may assess it when they need information about hydration status, fluid balance, or changes in body composition. The measurement is particularly relevant for patients with illness or altered kidney function, in whom body-water regulation may be clinically important. Results can help frame whether observed changes reflect broader disturbances in fluid handling.
The measurement supports research on electrolyte regulation, nutrition, and the physiological effects of aging or disease. It also helps investigators examine changes in body composition and water balance across different conditions. In clinical research, these data provide a quantitative outcome for studying how illness, nutrition, or altered regulation affects the body’s water compartments.