Anion gap

  1. Anion gap - calculated by?
    (sodium + potassium) - (bicarbonate + chloride)
  2. A normal anion gap?
    8-14 mmol/L
  3. Useful to consider when?
    Metabolic acidosis - normal anion gap / raised
  4. Causes of a normal anion gap or hyperchloraemic metabolic acidosis (5)
    • - gastrointestinal bicarbonate loss: diarrhoea, ureterosigmoidostomy, fistula
    • - renal tubular acidosis
    • - drugs: e.g. acetazolamide
    • - ammonium chloride injection
    • - Addison's disease
  5. Causes of a raised anion gap metabolic acidosis? (4)
    • - lactate: shock, hypoxia
    • - ketones: diabetic ketoacidosis, alcohol
    • - urate: renal failure
    • - acid poisoning: salicylates, methanol
Author
trincam2008
ID
346206
Card Set
Anion gap
Description
Anion gap
Updated