The Cohen–Woods classification categorizes causes of<unk>  as: * Type A: Decreased tissue oxygenation (e.g., from decreased blood flow) * Type B * B1: Underlying diseases (sometimes causing type A) * B2: Medication or intoxication * B3: Inborn error of metabolism
Lactic acidosis
Metabolic acidosis
Acidosis
Metabolic alkalosis
Azotemia
Hyperammonemia
Alkalosis
Hypercapnia