fluid and lytes Flashcards
what are the 4 function of fluid and electrolytes
- promote neuro muscular irritibility
- maintain body fluid osmolality
- regulate acid base balance
- regulate distribution of body fluids among body fluid compartments
what factors influence body fluids
age, gender, body fat
obese people with have _____ fluid than those who are thin
less
where is the highest amount of water fun in
muscle, skin and blood
what is third spacing and what causes this
when too much fluid from the blood nestles move into the interstitial space; caused by ascites, burns, peritonitis, bowel obstructions, massive bleeding in a joint
what are the 5 cations (+charge)
Na, K, Ca, Mg, H
what are the anions (- charge)
Cl, HCO3, Phos
osmolality should range from
280-300
gets things back to normal (homeostasis)
osmosis
moves from high concentration to lower concentration
diffusion
separates unwanted materials
filtration
protein transports sodium and potassium across membranes
sodium-potassium pump
if kidneys do NOT work then what happens to your lytes lab values
will most likely be abnormal
normal sodium lab value
135-145 mEq/L
if there is a decrease in serum Na this means
diluted ECF
if there is an increase in serum Na this means
concentrated ECF (H2O pulled out of cells)
when Na moves into a cell what moves out of the cell
Potassium
water follows
sodium
function of sodium controls _____ distribution, and has a great deal to do with our _____ and ______ function
H2O; muscle and nerve
normal potassium level
3.5-5.0 mEq/L