Anion Gap (Low): Difference between revisions
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**hypoalbuminemia | **hypoalbuminemia | ||
*Increased "unmeasured" cations | *Increased "unmeasured" cations | ||
** | **[[Hyperkalemia]] | ||
**hypercalcemia | **hypercalcemia | ||
**hypermagnesemia | **hypermagnesemia | ||
| Line 15: | Line 15: | ||
**polyclonal IgG gammopathy | **polyclonal IgG gammopathy | ||
*Pseudo | *Pseudo | ||
**Severe | **Severe [[Hypernatremia]] (>170 meq/L) | ||
***True conc of Na is underestimated | ***True conc of Na is underestimated | ||
**Marked hyperlipidemia | **Marked hyperlipidemia | ||
Revision as of 20:46, 15 November 2011
Background
- < 7 meq/L
DDX
- Lab error
- Decreased "unmeasured" anions
- hypoalbuminemia
- Increased "unmeasured" cations
- Hyperkalemia
- hypercalcemia
- hypermagnesemia
- lithium intoxication
- 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