Sodium and water balance Flashcards
what is water balance cotrolled by
anti diuretic hormone
what does ADH doe
makes you pee less as it causes water to be reasborbed from the renal tubules
how do we measure urine conc/ dilution
urine osmolality
low adh meaning
large volume of dilute urine
high adh meaning
small volume of conc urine
concentration and osmolality
concentrated urine = hihg osmolality
dilute urine = low osmolality
refernce interval of sodium water balance
135-145
where is sodium mostly confined to
extracellular fluid
pump in plasma membrane keeping it there
what does water follow
solute - sodium
SIADH
condition where the bdy produces too much antidiuretic hormone - ADH also known as vasopressin
action of vasopressin
regulates water balance in the body by controlling the amount of water the kidneys absorb
what triggers the releaese of ADH
increase in the osmolality of the blood
signs of high ADH
coughing
tiredness
sob
pulmonary oedema
pumping action of heart grows weaker
pleural effusion
swelling in abdomen
low na signs
increased pulse
dry mucous membranes
soft/ sunken eyeballs
decreased consciousness
decreased skin turgor
postural decreased in blood pressure
decraesed urine output
what is oedema treated with
loop diuretics