Hypomagnesemia: Difference between revisions
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==Background== | ==Background== | ||
*HypoK, | *[[HypoK]], [[HypoCa]] and [[Hypophos]] are often also present | ||
==Diagnosis== | ==Diagnosis== | ||
CNS | *CNS | ||
*Muscle weakness | **Muscle weakness | ||
*Ataxia | **[[Ataxia]] | ||
*Confusion | **[[Confusion]] | ||
*Seizures | **[[Seizures]] | ||
*Coma | **Coma | ||
GI | *GI | ||
*Dysphagia | **Dysphagia | ||
*Cardiovascular | |||
*CHF | **[[CHF]] | ||
*Dysrhythmias | **[[Dysrhythmias]] | ||
*Hypotension | **Hypotension | ||
Miscellaneous | *Miscellaneous | ||
*Hypokalemia | **[[Hypokalemia]] | ||
*Hypocalcemia | **[[Hypocalcemia]] | ||
*Anemia | **[[Anemia]] | ||
==DDX== | ==DDX== | ||
#ETOH | #[[ETOH]] | ||
#Malnutrition | #Malnutrition | ||
#Cirrhosis | #Cirrhosis | ||
#Pancreatitis | #[[Pancreatitis]] | ||
#S/P DKA | #S/P [[DKA]] | ||
#GI loss (esp diarrhea) | #GI loss (esp diarrhea) | ||
#Renal wasting | #Renal wasting | ||
##Furosemide | ##Furosemide | ||
##Hypophosphatemia | ##[[Hypophosphatemia]] | ||
==Treatment== | ==Treatment== | ||
*Replete [[Magnesium]] 2gm IV over 2hrs | *Replete [[Magnesium]] 2gm IV over 2hrs | ||
**up to 8-12gm may be given on 1st day | **up to 8-12gm may be given on 1st day | ||
*Replete if serum level <1.7 | |||
*Usual dose is 2g over 1 hour | |||
*If level <than 1.2, double the dose | |||
*Oral repletion may done if level is >1.2 and pt is asymptomatic | |||
*Magnesium oxide 400mg is approximately equal to 2g of MgSO4 | |||
==See Also== | ==See Also== | ||
*[[ | *[[Electrolyte Abnormalities (Main)]] | ||
==Source == | ==Source == |
Revision as of 07:21, 18 December 2013
Background
Diagnosis
- CNS
- GI
- Dysphagia
- Cardiovascular
- CHF
- Dysrhythmias
- Hypotension
- Miscellaneous
DDX
- ETOH
- Malnutrition
- Cirrhosis
- Pancreatitis
- S/P DKA
- GI loss (esp diarrhea)
- Renal wasting
- Furosemide
- Hypophosphatemia
Treatment
- Replete Magnesium 2gm IV over 2hrs
- up to 8-12gm may be given on 1st day
- Replete if serum level <1.7
- Usual dose is 2g over 1 hour
- If level <than 1.2, double the dose
- Oral repletion may done if level is >1.2 and pt is asymptomatic
- Magnesium oxide 400mg is approximately equal to 2g of MgSO4
See Also
Source
Tintinalli