Flashcards in Electrolytes Deck (53)
what is a major cation in the extracellular space?
sodium (test question)
what does sodium content indicate?
balance between dietary sodium intake and renal excretion
when do you lose sodium?
when you sweat
what are critical sodium values?
what does aldosterone do?
retains sodium (reabsorbs)-distal tubule, excretes potassium
water follows what?
who is best buds with sodium?
what does ADH do?
released from posterior pituitary
holds water in
-alcohol inhibits ADH
when will ADH be released?
increased osmotic gradient
what is the recommended Na intake?
1500mg/day (test question)
fatigue, confusion, muscle twitches and death are symptoms for what?
nausea, seizures, coma and death are symptoms for what?
what type of tube will sodium serum be drawn into?
red or green
what is the major intracellular cation?
what are critical K values?
what foods contain potassium?
tomatoes, potatoes, bananas
what controls K levels?
aldosterone (increase renal loss of potassium)
how does acid base balance influence serum potassium?
in alkalosis = K goes in, hydrogen goes out (makes serum more acidotic)
in acidosis = K goes out and H goes in (makes serum more alkalotic)
how is serum K collected?
red or green top
weakness, paralysis, hyporeflexia, ileus and cardiac dysarhythmia are symptoms of what?
irritiability, nausea, vomiting, intestinal colic and diarrhea are symptoms of what?
what is the major extracellular anion?
chloride (follows sodium)
how does chloride compensate for acid/base imbalance?
chloride goes in while bicarb comes out (makes serum alkalotic)
chlorides goes out while bicarb comes in (makes serum acidotic)
what top tube do you draw chloride in?
red or green
increase serum chloride
when sodium levels are off, what's the problem?
water, water, water
where does venous bicarb level come from?
breakdown of carbonic acid gives CO2 and bicarb
total CO2 is in the veins
what are critical values of bicarb?
normal is 23-30