Please confirm topic selection

Are you sure you want to trigger topic in your Anconeus AI algorithm?

Please confirm action

You are done for today with this topic.

Would you like to start learning session with this topic items scheduled for future?

Updated: Mar 8 2023

Acid-Base Nomogram


  • Simple acid-base disorders have changes in 
    • pH
    • PCO2
    • HCO3
  • The acid-base nomogram depicts these associated changes
    • for example, in metabolic acidosis there is a decreased pH and HCO3 level, along with a decreased PCO2 (due to respiratory compensation)
  • General principles
    • simple metabolic disorders (e.g., acidosis or alkalosis) have one set of expected values
      • this is because respiratory compensation is immediate
    • simple respiratory disorders (e.g., acidosis or alkalosis) have two set of expected values
      • renal compensation has not occured in acute respiratory disorders
        • renal compensation takes time to occur
      • renal compensation has occured in chronic respiratory disorders
        • blood pH would be expected to be close to normal or normal
Acid-Base Disorders
Acid-Base Disorder pH PCO2 [HCO3-] Compensatory Response
Metabolic acidosis
  • ↓ (primary disturbance)
  • Hyperventilation
Metabolic alkalosis 
  • ↑ (primary disturbance)
  • Hypoventilation
Respiratory acidosis
  • ↑ (primary disturbance)
  • ↑ renal HCO3- reabsorption
Respiratory alkalosis
  • ↓ (primary disturbance)
  • ↓ renal HCO3- reabsorption
Private Note

Attach Treatment Poll
Treatment poll is required to gain more useful feedback from members.
Please enter Question Text
Please enter at least 2 unique options
Please enter at least 2 unique options
Please enter at least 2 unique options