Disorder | HCO3- (mmol/l) | pCO2 (mmHg) | SBE (mmol/I) |
Metabolic acidosis | <22 | = (1.5 × HCO3-) + 8 | <-5 |
= 40 + SBE | |||
Metabolic alkalosis | >26 | = (0.7 × HCO3-) + 21 | >+5 |
= 40 + (0.6 × SBE) | |||
Acute respiratory acidosis | = [(pCO2 – 40)/10] + 24 | >45 | = 0 |
Chronic respiratory acidosis | = [(pCO2 – 40)/3] + 24 | >45 | = 0.4 × (pCO2 – 40) |
Acute respiratory alkalosis | = [(40 – pCO2)/5] + 24 | <35 | = 0 |
Chronic respiratory alkalosis | = [(40 – pCO2)/2] + 24 | <35 | = 0.4 × (pCO2 – 40) |