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Anion Gap
Na - (Cl+ HCO3)
Normal Gap is 12 +/- 2
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Calculated Osmolality
2[Na} + BUN/2.8 + Glucose/18
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Osmolal gap
Measure osmolality - Calculated Osmolality
Normal gap less than 10
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Causes of Anion Gap Acidosis
- P Paraldehyde
- Iron, Isoniazid, Inhalants, Inborn errors
- L Lactic Acidosis
- E Ethanol ketoacidosis/Ethelene glycol
- S Salicylates, solvents, starvation
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