Ch 2. Shift of Water among the body fluid compartments

This chapter examines the shift of water among body fluid compartments and the consequences in the plasmatic concentrations of the plasmatic proteins concentration and the hematocrit. Examples of non-physiological and some pathological conditions are used.

Calculation of the water deficit by using the standard formula available from Adrogue, HJ; and Madias, NE. Primary Care: Hypernatremia. New England Journal of Medicine 2000; 342(20):1493-1499. Use the following Link: MedCalc: Hyponatremia & Hypernatremia

Is the interstitial space a new organ? Is it something new?

Read this paper and think: https://www.nature.com/articles/s41598-018-23062-6

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Solution, Colloid and Suspension

A solution is always transparent; light passes through with no scattering from solute particles, which are molecule in size. The solution is homogeneous and does not settle out. A solution cannot be filtered but can be separated using the process of distillation.

A suspension is cloudy and heterogeneous. The particles are larger than 10,000 Angstroms, which allows them to be filtered. If a suspension is allowed to stand, the particles will separate out.

A colloid is intermediate between a solution and a suspension. While a suspension will separate out a colloid will not. Colloids can be distinguished from solutions using the Tyndall effect. Light passing through a colloidal dispersion, such as smoky or foggy air, will be reflected by the larger particles and the light beam will be visible. A hydrocolloid can simply be defined as a substance that forms a gel when it is exposed to water. Such substances include both polysaccharides and proteins.