Pediatric Dehydration Severity & Fluid Deficit — free guideline decision tool
This tool estimates the cumulative fluid deficit from clinical dehydration severity to guide a pediatric rehydration plan.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Age group | Infant/toddler (< 2 yr) |
|---|---|
| Dehydration severity | Mild (slightly dry mucosa, mildly reduced urine, no clear circulatory change) |
| Weight | 10 kg |
→Cumulative fluid deficit (est.)500mL
- Estimated dehydration：5%
| Age group | Older child (≥ 2 yr) |
|---|---|
| Dehydration severity | Severe (lethargy/drowsiness, very slow skin recoil, poor perfusion, anuria) |
| Weight | 10 kg |
→Cumulative fluid deficit (est.)900mL
- Estimated dehydration：9%
Common questions
What is Pediatric Dehydration Severity & Fluid Deficit?
This tool estimates the cumulative fluid deficit from clinical dehydration severity to guide a pediatric rehydration plan.
How is Pediatric Dehydration Severity & Fluid Deficit calculated? What is the core formula?
Deficit ≈ dehydration% × weight (kg) × 10 mL. Infant/toddler: mild 5/moderate 10/severe 15%. Older child: mild 3/moderate 6/severe 9%.
When is Pediatric Dehydration Severity & Fluid Deficit used?
Use to convert an age-group- and severity-based dehydration percentage into a deficit volume, on top of maintenance and ongoing losses.
What are the key clinical points for Pediatric Dehydration Severity & Fluid Deficit?
Severe dehydration or shock is resuscitated first with rapid isotonic boluses (10–20 mL/kg) before the staged deficit replacement. (original synthesis · not guideline verbatim) The deficit is replaced in stages on top of maintenance, continually accounting for ongoing losses. Clinical dehydration grading is subjective and requires dynamic reassessment.
What are the limits and cautions when using Pediatric Dehydration Severity & Fluid Deficit?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is Pediatric Dehydration Severity & Fluid Deficit calculated in practice? Can you show a worked example?
Inputs: Age group Infant/toddler (< 2 yr), Dehydration severity Mild (slightly dry mucosa, mildly reduced urine, no clear circulatory change), Weight 10 kg → Result: Cumulative fluid deficit (est.) 500 mL（Estimated dehydration: 5%） Inputs: Age group Older child (≥ 2 yr), Dehydration severity Severe (lethargy/drowsiness, very slow skin recoil, poor perfusion, anuria), Weight 10 kg → Result: Cumulative fluid deficit (est.) 900 mL（Estimated dehydration: 9%）
Run Pediatric Dehydration Severity & Fluid Deficit now
This tool estimates the cumulative fluid deficit from clinical dehydration severity to guide a pediatric rehydration plan.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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