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Apex Nursing

Chart — Pediatrics

Dehydration Assessment Chart

A side-by-side comparison of pediatric dehydration severity — mild, moderate, and severe — across the key clinical assessment parameters nurses use at the bedside to guide fluid management decisions.

Educational use only. Dehydration severity guides initial management but requires individualized clinical assessment. Fluid replacement requires provider orders. Follow AAP/WHO rehydration guidelines and institutional protocols. This material supports nursing education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional policy, or medical direction. Always follow facility protocols and current provider orders.

Clinical Assessment by Severity

Assessment ParameterMild (3–5%)Moderate (6–9%)Severe (≥10%)
Mucous membranesSlightly dryDryParched, cracked
Urine outputSlightly decreased; pale yellowMarkedly decreased; dark, concentratedMinimal to absent (oliguria/anuria)
Mental statusAlert, thirsty, responsiveIrritable, restless, fussyLethargic, limp, unresponsive
Skin turgorNormal; immediate recoilDecreased; recoil <2 secTenting; recoil >2 sec
EyesNormalSunken; reduced tearsMarkedly sunken; no tears
Fontanelle (infants)NormalSunkenMarkedly sunken
Heart rateNormalTachycardiaMarked tachycardia
Blood pressureNormalNormal to slightly decreasedHypotension — LATE and critical
Capillary refill≤2 seconds2–3 seconds>3 seconds
Weight loss3–5% body weight6–9% body weight≥10% body weight
Crying / TearsNormal; tears presentCries with few tearsNo tears with crying

Management Summary by Severity

SeverityPrimary ManagementFluid TypeKey Nursing Action
MildORT (oral rehydration therapy)Pedialyte / WHO ORS — 50 mL/kg over 2–4 hrsMonitor wet diapers and clinical improvement
ModerateORT attempt; IV if ORT failsNormal saline 20 mL/kg bolus over 20–30 minCheck electrolytes; reassess after bolus
SevereIV/IO access immediatelyNS 20 mL/kg bolus; repeat PRN; correct hypoglycemiaAssess perfusion after each bolus; hold K+ until UO established

NCLEX Pearls

  • Tachycardia is the first sign of dehydration; hypotension is a late, pre-terminal sign
  • No tears + sunken eyes + sunken fontanelle = significant dehydration in an infant
  • 1 kg weight loss = approximately 1 liter fluid loss — weigh patients for accurate assessment
  • ORT is equivalent to IV for mild dehydration — it is the AAP-preferred approach
  • Never use plain water for rehydration — risk of hyponatremia and seizures
  • Do not add potassium to IV fluids until urine output is confirmed
  • Assess skin turgor on the abdomen or inner thigh — not extremities (fat distribution misleads)

Related Resources

Pediatric Fluid and Dehydration ManagementComprehensive guide with ORT, Holliday-Segar method, and nursing interventions
Open →
Dehydration Severity ReferenceAssessment findings and nursing priorities for each dehydration severity level
Open →
Sodium Disorder ComparisonHypo- and hypernatremia comparison relevant to pediatric fluid management
Open →

Standards & sources

Fact-checked Jun 21, 2026

This page is written to align with AAP / WHO Dehydration Assessment Guidelines. It is an educational summary, not a citation of any single document — always verify specific doses, values, and protocols against current guidelines and your facility policy. How we source content →