Anion Gap (Low): Difference between revisions
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(→DDX) |
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**[[Hyperkalemia]] | **[[Hyperkalemia]] | ||
**[[Hypercalcemia]] | **[[Hypercalcemia]] | ||
** | **[[Hypermagnesemia]] | ||
**[[Lithium Toxicity]] | **[[Lithium Toxicity]] | ||
*Increased cationic paraprotein | *Increased cationic paraprotein | ||
** | **Multiple myeloma | ||
** | **Polyclonal IgG gammopathy | ||
*Pseudo | *Pseudo | ||
**Severe [[Hypernatremia]] (>170 meq/L) | **Severe [[Hypernatremia]] (>170 meq/L) | ||
Revision as of 20:49, 15 November 2011
Background
- < 7 meq/L
DDX
- Lab error
- Decreased "unmeasured" anions
- hypoalbuminemia
- Increased "unmeasured" cations
- Increased cationic paraprotein
- Multiple myeloma
- Polyclonal IgG gammopathy
- Pseudo
- Severe Hypernatremia (>170 meq/L)
- True conc of Na is underestimated
- Marked hyperlipidemia
- Leads to overestimation of plasma Cl conc)
- Bromide intoxication (e.g. for myasthenia gravis and some herbal medications)
- Machine mistakenly reads Br as Cl
- Severe Hypernatremia (>170 meq/L)
- AG falls by 2.5 meq/L for every 1 g/dL reduction in albumin concentration
See Also
Source
Kaji Questions