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Anion Gap

Aka: Anion Gap
  1. Definition
    1. Difference between calculated serum anions and cations
  2. Calculation
    1. AG = Serum Sodium - Serum Chloride - Serum Bicarbonate
  3. Interpretation
    1. Normal Anion Gap: 12 +/- 2 meq/L
  4. Causes: Low Anion Gap
    1. Paraproteinemia (Multiple Myeloma)
    2. Spurious Hyperchloremia (Bromide toxicity)
    3. Hyponatremia
    4. Hypermagnesemia
    5. Hypoalbuminemia
      1. Anion Gap decreases 2.5 meq per 1 g/dl Albumin drop
  5. Causes: High Anion Gap
    1. Metabolic Acidosis (without increased Serum Chloride)
  6. References
    1. Bakerman (1984) ABCs of Lab Data, ILD, Greenville, NC
    2. Ghosh (2000) Fed Pract p. 23-33

Anion Gap (C0003074)

Concepts Clinical Attribute (T201)
MSH D000136
SnomedCT 102637000
English Anion Gaps, Gap, Anion, Gaps, Anion, ANION GAP, Anion gap, function, anion gap, AG - Anion gap, Anion gap, Anion gap, function (observable entity), Anion gap (function), Anion Gap
Portuguese Gap Aniônico
Spanish Anión Gap, Anion Gap, anión gap, anion gap, anión restante, brecha aniónica (entidad observable), brecha aniónica (función), brecha aniónica, hiato aniónico, intervalo aniónico
French Trou anionique
German Anionen-Lücke
Italian Gap anionico
Dutch Anion gap
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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