chapter 7 ABG Flashcards
ph and paco2 move opposite direction
respiratory problem
ph and paco2 move same direction
metabolic problem
bicarbonate less than or equal -6
hyperchloremic metabolic acidosis and/or execration of bicarbonate compensating for respiratory alkalosis
bicarbonate greater or equal to 6
metabolic alkalosis and/or bicarbonate retention compensating for respiratory acidosis
elevated anion gap
metabolic acidosis: lactic acidosis, ketoacidosis, poisoning
base excess
be= normal(buffer base) - calculated (buffer base)
bicarbonate gap
na-chl-39
acute ph down .07 respiratory acidosis
hco3 up 1
ph down by .03 respiratory acidosis
hco up by 3-4 in chronic situation
in acute respiratory alkalosis ph up 0.08
hco3 down by 2mEq/L
in chronic respiratory alkolosis ph up by 0.03
hco3 down by 5 mEq/L
an 0.1 unit decrease in ph from 7.40 to 7.30 respresent?
a 25% increase in hydrogen molecules
elevated hco3 or serum co2
a. metabolic alkolosis and/or
b. bicorbonate retention as compensation for respiratory acidosis
reduce hco3 or serum co2
a. metabolic acidosis and/or
b. bicorbonate excertion as compensation for respiratory alkolosis
if you find serum co2 below 12 then it is most likely
metabolic acidosis
if you find serum co2 above 45 almost assuredly indicates
metabolic alkolosis
elevated anion gap
metabolic acidosis
lower anion gap
hypoproteinemia
reduction of unmeasure anion
presence of abnormal positively charged protien as may be seen in multiple myeloma
