Disorders of Na+ and H2O Balance Flashcards
there are two reasons that the concentration of sodium drops, what are they?
either there is too little sodium in the ECF or there is too much water
the excessive loss of sodium is often related to what?
renal problems
kidneys preserve sodium through the use of what?
aldosterone
failure to preserve sodium in the kidneys may indicate what?
renal impairment or adrenal insufficiency or from diuretic use
when a pt is dehydrated should they drink water or a solution with electrolytes?
solution with electrolytes
how can blood sodium be diluted?
when too much fluid moves to or stays in the vascular space
when water is retained, what is at fault?
the kidneys
what is Syndrome of Inappropriate ADH secretion (SIADH)?
sometimes the high ADH levels are through inappropriate secretion - mixed up messages in the body
what medication class can cause water retention?
antipsychotic meds
what happens where there is too LITTLE ECF sodium?
- not enough intake
- too much sodium loss
what happens where there is too MUCH ECF sodium?
- osmotic pull
- water retention