The hypothalamus and osmo-receptors are responsible for the restoration of fluid volume. Sweating is also another method of loss, however these amounts are usually negligible.Ībnormal loss of fluid including their reasons include:Īltered urine production - e.g kidney disease Normal water loss in dogs and cats occur because of the following bodily functions: A healthy animal will have access to water via drinking and eating and will maintain a stable water content by balancing input and output. The body water content represents a healthy loss and intake of water.
Indications for the need of fluid therapy Osmosis is the term to describe the movement of water through a semi-permeable membrane from an area of high concentration to an area of low concentration.Įxample - if the animal hasn’t taken in enough water, and the extracelluar fluid is less than 20%, some of the intracellular fluid will move from within the cell to outside in order to retain an equal balance. Extracellular fluid also forms the interstitial fluid (spaces between tissues/organs), intravascular fluid/plasma (found in blood cells or) and transcellular fluid (found in spaces lined with epithelium) Approximately there is 20% (1/3) of the total fluid percentage outside of the bodily cells.
There are two main types of cellular fluid:ġ - Intracellular fluid (ICF) - which is the fluid which lies within the cell, and there is approximately 40% of the total body fluid percentage (2/3) inside the body cells.Ģ - Extracellular fluid (ECF) - the fluid which lies outside of the cell.
The total body weight is made up of 60% water and 40% other. However, if used incorrectly it does have the potential to cause harm to the patient.īelow are a few aims of fluid therapy which I have put together: It is a common practice seen in veterinary treatment which is very effective and can also be life saving for instance in shock. This revision post was requested and so I hope you enjoy and learn all about fluid therapy including how you can put your theory into practice with my created worksheet which you can use for practising the fluid therapy calculation in particular.
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