Cerebral salt-wasting syndrome

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Cerebral salt-wasting syndrome
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DiseasesDB 32234
eMedicine ped/354 

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Cerebral salt-wasting syndrome

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Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [1] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch. Cerebral salt-wasting syndrome (CSWS) is a disease featuring hyponatremia (low blood sodium levels) and dehydration in response to disease processes in or surrounding the brain.

Differential diagnosis

It may be difficult to distinguish from the syndrome of inappropriate antidiuretic hormone (SIADH), which develops under similar circumstances and also presents with hyponatremia.

The main clinical difference between these two conditions is that of total fluid status of the patient: CSWS leads to a relative or overt hypovolemia, whereas SIADH is consistent with a normal to hypervolemic patient. [1]

Another useful point in differentiating CSWS from SIADH is a laboratory finding: random urine sodium concentrations tend to be >100 mEq/L in CSWS. SIADH rarely, if ever, leads to a random urine sodium of >100 mEq/L.

Treatment

The reason for the abnormality is different, and treatments are opposites: fluid restriction is used in SIADH, which would worsen cerebral salt wasting. Instead, CSWS is treated with fluids and correction of the low sodium.

Sometimes, fludrocortisone (a mineralocorticoid) improves the hyponatremia.[1]

References

no:CSWS

Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

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