DSA Equations

Question 1

if chronic respiratory acidosis, what equation do you use?

Answer 1

expected [HCO3] = 24 + 4[(PaCO2 - 40) / 10]

Question 2

if acute respiratory alkalosis, what equation do you use?

Answer 2

expected [HCO3] = 24 - 2[(40 - PaCO2) / 10]

Question 3

if chronic respiratory alkalosis, what equation do you use?

Answer 3

expected [HCO3] = 24 - 5[(40 - PaCO2) / 10]

Question 4

to determine if respiratory compensation is adequate in metabolic acidosis what equation do you use?

Answer 4

Expected PaCO2 = (1.5[HCO3] + 8) +- 2

Question 5

anion gap equation?

Answer 5

anion gap = [Na] - ([Cl] + [HCO3])

Question 6

when do calculate the anion gap?

what is normal?

Answer 6

when there is metabolic acidosis

gap

Question 7

what does the MUDPILES stand for

Answer 7

methanol
uremia
Diabetic ketoacidosis / alcoholic ketoacidosis or starvation
paraldehyde
isoniazid (INH) or iron
Lactic acidosis
ethanol
Salicylates (aspirin)

Question 8

what eq for metabolic alkalosis?

Answer 8

delta PaCO2 = (0.5 to 1.0) x delta HCO3

it is a range

Question 9

if acute respiratory acidosis what equation do you use?

Answer 9

expected [HCO3] = 24 + [(PaCO2 - 40) / 10]