Body Water (ASAN002/1) Flashcards
What is the Average adult animal’s body water %? (1)
60% x weight
What is the average Older animal’s body water %? (1)
50 – 55% x weight
Younger animal body water %
70 – 80% x weight
What is Intracellular fluid (ICF)? (1)
Body water located inside the cells of tissues.
How much of total body water is Intracellular fluid (ICF)? (1)
2/3 of total body water
What is Extracellular fluid (ECF)? (1)
Body water located outside the cells.
What types of fluids can Extracellular fluid (ECF) be devided into? (3)
- Intravascular fluid
- Interstitial fluid
- Transcellular fluids
What is Intravascular fluid? (1)
Water inside the blood vessels
What is Interstitial fluid? (1)
Water in the spaces between the cells.
Aside from between cells, where else can Interstitial fluid be found? (3)
- Bone
- Cartilage
- Dense tissue
What are Transcellular fluids?
Specialised fluids.
What are examples of Transcellular Fluids? (2)
- Cerebrospinal fluid
- Gastrointestinal secretions.
How much of the ECF does Transcellular fluilds make up? (1)
Makes up a very small amt of the ECF.
Body Fluid distributions (image)
What do we need to take into acount to achieve water balance for a patient? (2)
- Amt of water being lost by the body.
- Amt of water being taken in by the body.
How is the normal water balance in a healthy dog or cat generally calculated? (1)
50mls x kg x day
What is the normal water balance range in a healthy dog or cat over 24hrs? (1)
40 – 60mls/kg/day (24hrs)
What is the water balance calulation based on? (1)
How much fluid the animal will loose in a day (on average).
What are the two groups of fluid losses that are used to determine normal fluid loss of a patient? (2)
- Sensible lossess
- Insensible lossess
What is Insensible loss? (1)
Loss of fluid that cannot be easily detected with your senses.
What are examples of Insensible lossess? (2)
- Respiration
- Sweating
What is Sensible loss? (2)
Loss of fluid that can be detected by your senses
(ie see it coming out)
What are the two types of Sensible lossess? (2)
Urinary loss
Faecal loss
What type of loss is Respiration / Sweating? (1)
Insensible loss
How much fluid is usually lost due to Respiration & Sweating? (1)
20mls/kg/24hrs
What type of loss is Urinary loss? (1)
Sensible loss
How much fluid is usually lost due to Urinary loss? (2)
20mls/kg/24hrs
(normal range)
What type of los is Faecal Loss? (1)
Sensible loss
How much fluid is usually lost due to Faecal Loss? (2)
10mls/kg/24hrs
(normal range)
How do we calculate Total fluid loss? (2)
Respiration/Sweating + Urinary + Faecal
20 + 20 + 10
= 50mls/kg/24hrs
What are causes of Abnormal fluid loss? (7)
- Vomiting
- Diarrhoea
- Blood loss
- Anorexia
- Evaporation (↑ panting etc)
- Disease
- Sx procedures
Total Fluid Loss (image)
