Skip to main content

Dehydration

Tu Dan H Nguyen, MD Reviewed 06/2022
 


BASICS

DESCRIPTION

  • A state of negative fluid balance; strictly defined as free water deficiency

  • The two types of dehydration:

    • Water loss

    • Salt and water loss (combination of dehydration and hypovolemia)

EPIDEMIOLOGY

DIAGNOSIS

Calculate percent dehydration = (pre-illness weight − illness weight)/pre-illness weight × 100. Supplement this along with the ongoing fluid loss. 

HISTORY

  • Fever

  • Intake (including description a...

TREATMENT

MEDICATION

First Line

  • Oral rehydration is the first-line treatment in dehydrated children. If this is unsuccessful, use IV rehydration. If IV unobtainable, nasogastric (NG) or intraosseous (IO...

ONGOING CARE

FOLLOW-UP RECOMMENDATIONS

Activity as tolerated 
  • If mild to moderate dehydration, the patient may be mobile without restrictions, although watch for orthostasis/falls.

  • If moderate to severe ...

REFERENCES

1
Thomas  DR, Cote  TR, Lawhorne  L, et al; for Dehydration Council. Understanding clinical dehydration and its treatment. J Am Med Dir Assoc.  2008; 9(5): 292– ...

SEE ALSO

Oral Rehydration 

CODES

ICD10

  • E86.0 Dehydration

  • E87.1 Hypo-osmolality and hyponatremia

  • E86.1 Hypovolemia

SNOMED

  • 34095006 dehydration (disorder)

  • 89627008 Hyponatremia (disorder)

  • 85648000 Hypoosmolarity (finding)

  • 28560003 Hypovo...

CLINICAL PEARLS

  • Dehydration is the result of a negative fluid balance and is a common cause of hospitalization in both children and the elderly.

  • Begin by assessing the level of dehydration, determining...

Subscribe to Access Full Content

Sign Up for a 10-Day Free Trial

Sign up for a 10-day FREE Trial now and receive full access to all content.

×