Flash Notes Miscellaneous - Blood Gas Evaluation Flashcards
T/F: evaluation of a/b status = interpretation of blood gas
TRUE
what 3 parameters are measured specifically for acid base status?
pH, respiratory CO2, & metabolic HCO3/TCO2 and/or BE
what all is measured to evaluate acid base status?
alectrolytes (na & cl), PCV, TP/TS & pH, pCO2, HCO3, TCO2, and/or B/E
what are the main rules of thumb for a simple acid/base disorder?
one side is abnormal while the other is compensatory - primary component will shift in the same direction as pH change, compensatory response moves in the opposite direction of pH, & no overcompensation
what are the main rules of thumb for mixed acid/base disorders?
normal pH but pCO2 or HCO3 are abnormal, shift in pCO2/HCO3 values are not parallel (both up or down), pH change is opposite to that expected from an abnormal pCO2 or HCO3, & compensation levels appear to be greater than expected
how do proteins affect mixed acid/base disorders?
hypoalbuminemia: metabolic alkalosis due to loss of weak acids & hyperglobulinemia: metabolic acidosis due to increased weak acids
when a metabolic acidosis presents, what should you do?
calculate the anion gap & look at chloride level
T/F: hypoventilation with resultant respiratory acidosis is very common under anesthesia
TRUE
why is respiratory acidosis very commonly seen in anesthetized animals?
respiratpry center is affected by anesthetic drugs & the respiratory threshold for CO2 is reset - respiratory threshold for CO2 is increased above normal & breathing is not stimulated until the pCO2 exceeds the reset value
T/F: respiratory compensation is inhibited in animals under anesthesia
TRUE