body fluids

how much body water does ICF make up?

Two thirds of all water in the body

How much of the body is made up of ECF?

One third of all water in the body

How much of total body weight is made up of water?

60-80%

What is osmosis?

Osmosis is the movement of water through a semi-permeable membrane from a fluid of low concentration to a high concentration

What is diffusion?

Diffusion is the movement of molecules of a liquid or gas down a concentration gradient (high to low)

Poly uria

Excessive/excess urine

Polydypsia

Excessive/increased thirst

Osmotic pressure

The pressure difference required to stem the flow of water across a semi permeable membrane

Isotonic

Equal osmotic pressure to plasma

Hypertonic

Higher osmotic pressure than plasma

Hypotonic

Lower osmotic pressure than plasma

What is the daily maintenance requirements for a dog?

40-60ml/Kg body weight/24 hours (50ml)

What is the daily maintenance requirements for a cat?

60ml/kg body weight/24 hours

What is the daily maintenance requirements for a kitten?

150ml/kg/body weight /24 hours

What is different for daily maintenance requirements if a patient is Pyrexic?

Need to add extra 3ml/kg body weight/ degree above normal /24 hours

What is a normal body temperature for a dog + cat?

38.5 degrees

What is the main cation in ISF?

Sodium

What is the main action in ICF?

Potassium

What is a cation?

Ions carrying one or more positive charges

What is an anion?

An ion carrying one or more negative charges

What is included in intracellular fluid (ICF) ?

Blood cells, other body cells, red and white blood cells

What is included in extracellular fluid?

Interstitial fluid, transcellular fluid, plasma water