22. Respiratory Disturbance Compensation Equations

Question 1

What is the equation for expected bicarbonate in acute respiratory acidosis?

Answer 1

HCO3 = 24 + (PaCO2 -40)/10

Question 2

What is the equation for the expected biarbonate in chronic respiratory acidosis?

Answer 2

Expected HCO3 = 24 + 4(PaCO2 - 40) / 10

Question 3

What is the equation for expected bicarbonate in acute respiratory alkalosis?

Answer 3

Expected HCO3 = 24 - 2(40 - PaCO2) / 10

Question 4

What is the equation for expected bicarbonate in chronic respiratory alkalosis?

Answer 4

HCO3 = 24 - 5(40 - PaCO2)/10

Question 5

What is the equation for calculating the anion gap?

Answer 5

Na - (Cl + HCO3)

Question 6

What is the equation for determining adequate compensation for metabolic alkalosis?

Answer 6

∆PaCO2 = (.5 to 1.0)∆HCO3

Question 7

What is the equation for determining adequate compensation for metabolic acidosis?

Answer 7

PaCO2 = 1.5[HCO3] + 8 ± 2

Question 8

What is the equation for determining blood osmolarity?

Answer 8

2x Na + BUN/2.8 + Glucose/18