Causes of Metabolic Acidosis with Elevated Anion Gap - Differential Diagnosis Algorithm
Elevated Anion Gap > 12 (Gain of H+) - Need to correct anion gap for albumin: For every drop of 10 for albumin (from 40) add 2.5 to the anion gap
Decreased NH4 production and anion secretion
• AKI/CKD
Salicylate poisoning
Lactic acidosis
• Shock
• Drugs
• Inborn errors
Ketosis
• Diabetic ketoacidosis
• Starvation/alcoholic Ketosis
Toxic alcohol ingestion
• Ethylene/Propylene glycol
• Methanol
Other ingestion
• Paraldehyde, Iron, Isoniazid, Toluene, Cyanide
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