# 22. Respiratory Disturbance Compensation Equations Flashcards

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

HCO3 = 24 + (PaCO2 -40)/10

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

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

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

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

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

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

What is the equation for calculating the anion gap?

Na - (Cl + HCO3)

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

∆PaCO2 = (.5 to 1.0)∆HCO3

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

PaCO2 = 1.5[HCO3] + 8 ± 2

What is the equation for determining blood osmolarity?

2x Na + BUN/2.8 + Glucose/18