blood gases

Question 1

what is the bodies response to increased plasma pH

Answer 1

decreaed sodium-hydrogen exchange
decreased bicarb reabsorption

Question 2

what is the bodies response to decreased plasma pH

Answer 2

increased sodium-hydrogen exchange
increased bicarb reabsorption

Question 3

An increase in H+ ions, a decrease in pH, and a decrease in HCO3 results in what acid-base disorder?

Answer 3

metabolic acidosis

Question 4

Which parameter on a blood gas analysis is calculated instead of being directly measured.

Answer 4

bicarb (HCO3)

Question 5

What is the best interpretation of the following results?

pH=7.33 (7.35-7.45)

CO2= 27 (35-45)

HCO3= 14 (22-29)

Answer 5

Metabolic acidosis with partial compensation

Question 6

what does a positive base excess indicate

Answer 6

excess bicarb - metabolic alkalosis

Question 7

what does a negative base excess indicate

Answer 7

deificent bicarb = metabolic acidosis

Question 8

define and describe base excess

Answer 8

• indicates excess bicarb
• calculated using pH, pCO2, and hgb

Question 9

what is a buffer made of

Answer 9

weak acid and salt of conjugate base

Question 10

what substance is the primary buffer in urine/urine filtration

Answer 10

phosphate