Acid Base Renal

Question 1

for respiratory acidosis (PaCO2 >40) calculate bicarb comensation

Answer 1

Acute = Bicarb increase 1 mmol/L per every 10mmHg increase in PaCO2

for chronic, increases 4mmol/L

Question 1

ions of anion gap

Answer 1

Na Cl HCO3 (gap should be 10)

Question 2

normal blood pH

Answer 2

7.40

Question 2

systematic approach

Answer 2

1. pH
2. Detemine primary - resp or metabolic
3. calculate compensation
4. calculate anion gap

Question 3

if metabolic Acidosis, calculate expected pCO2 compensation

Answer 3

-pCO2 = 1.5[HCO3)+8

Question 5

henderson equation

Answer 5

24(pCO₂/[HCO₃]) = H+

Question 6

typical urine pH

Answer 6

6-6.5

Question 7

for respiratory alkalosis (PCo2 < 40) calculate expected bicarb compensation

Answer 7

acute: bicarb decreases 2mmol/L per each 10mmHg PaCO2

for chronic, decrease 4 mmol/L per

Question 9

normal pH, survivable pH range

Answer 9

6. 8-7.6
7. 4

Question 10

Baselines for respiratory alkalosis/acidosis

Answer 10

acidosis = pCO2 > 40mmhg

alkalosis = pCO2 < 40 mmhg

Question 11

if metabolic alalosis, calculate expected pCO2 compensation

Answer 11

-pCO2 = 0.9[HCO3)+9

Question 12

normal bicarb levels

Answer 12

23mmol/L

Question 13

baselines for primary metabolic acidosis / alkalosis

Answer 13

Acidosis = HCO3 < 24mmol/L

Alkalosis = HCO3 > 23 mmol/L