PAEDIATRICS
FLUIDS/DEHYDRATION
https://www.rch.org.au/clinicalguide/guideline_index/Dehydration/
PromptSurgical causes for vomiting
ResponseIntussusception - Recurrent episodes of severe distress, associated pallor, and red current jelly stools
Incarcerated hernia - known hernia, tender mass palpable in inguinal region
Appendicitis - Fever, rebound tenderness in RIF, Rovsings sign
Malrotation - Known midgut issue/meckels
Biliary problems - Jaundice
Incarcerated hernia - known hernia, tender mass palpable in inguinal region
Appendicitis - Fever, rebound tenderness in RIF, Rovsings sign
Malrotation - Known midgut issue/meckels
Biliary problems - Jaundice
PromptRed flags suggesting ‘not’ gastroenteritis
ResponseVomiting child without diarrhoea
<6 months age
Bilious vomiting
Past GI/surgical history (Short gut, hirschsprungs, ileostomy
Complex medical history (renal/cardiac disease)
Blood or mucous in the stool - ? inflammatory
Recurrent presentations for similar disease
<6 months age
Bilious vomiting
Past GI/surgical history (Short gut, hirschsprungs, ileostomy
Complex medical history (renal/cardiac disease)
Blood or mucous in the stool - ? inflammatory
Recurrent presentations for similar disease
PromptMild Dehydration (<5%)
ResponseAlert and responsive, Obs normal, Eyes not sunken, normal skin turgur
PromptModerate (5-9%)
ResponseSigns mildly to moderately abnormal
Lethargic, irritable,
Normal - mildly increased HR, RR, Cap refil time
Normal BP, colour, warm extremities, pulses
Dry MM, sink turgur mildly decreased
Lethargic, irritable,
Normal - mildly increased HR, RR, Cap refil time
Normal BP, colour, warm extremities, pulses
Dry MM, sink turgur mildly decreased
PromptSevere (>10%)
ResponseSigns markedly abnormal
Reduced conscious state
Tachycardia
Increased RR, Deep acidotic breathing
Hypotension
Pale/mottled
Cold
Weak
Deeply sunken eyes/fontanelle
Dry MM
Decreased skin turgur
Marked prolognation in central cap refil time.
Reduced conscious state
Tachycardia
Increased RR, Deep acidotic breathing
Hypotension
Pale/mottled
Cold
Weak
Deeply sunken eyes/fontanelle
Dry MM
Decreased skin turgur
Marked prolognation in central cap refil time.
PromptSigns to assess in dehydration and rehydration therapy
ResponseClinical assessment of hydration status (including signs of overload - puffy face etc.)
Current weight
Pre-morbid weight (if available)
Intake/output
Electrolytes
BSL
Current weight
Pre-morbid weight (if available)
Intake/output
Electrolytes
BSL
PromptGas findings in gastroenteritis
ResponseMetabolic alkalosis - acid loss due to vomiting
Secondary - HAGMA (ketosis)
? respiratory compensation
Secondary - HAGMA (ketosis)
? respiratory compensation
PromptOral rehydration therapy strategies in gastroenteritis
ResponseSmall amounts frequently
Oral rehydating solution - Gastrolyte/hydralyte
Slow: 10-20 mL/kg//h, rapid 25 mL/kg/hr
Duration ~ 4 hours
+/- ondansetron
Oral rehydating solution - Gastrolyte/hydralyte
Slow: 10-20 mL/kg//h, rapid 25 mL/kg/hr
Duration ~ 4 hours
+/- ondansetron
PromptNG rehydration therapy
ResponseIndication: Failed oral rehydration
Use Oral rehydration solution - Hydralyte/gastrolyte
Advantages:
Demonstrates intact gut function
More “physiologic” - allows body to balance need for fluids/electrolytes
Risk of fluid bolus with IV fluids not present with NG reehydration
Avoids negatives of IV fluids - IVC tissue etc.
Rapid rehydration - >6 months, discharge anticipated (Eg: Gastroenteritis)
10 mL/kg/h (for 4% deficit) -25 mL/kg/h (for 10% deficit) for 4 hours
Note most NG fluid pumps max out at 300 mL/h so if over this prolonged duration may be required
Use Oral rehydration solution - Hydralyte/gastrolyte
Advantages:
Demonstrates intact gut function
More “physiologic” - allows body to balance need for fluids/electrolytes
Risk of fluid bolus with IV fluids not present with NG reehydration
Avoids negatives of IV fluids - IVC tissue etc.
Rapid rehydration - >6 months, discharge anticipated (Eg: Gastroenteritis)
10 mL/kg/h (for 4% deficit) -25 mL/kg/h (for 10% deficit) for 4 hours
Note most NG fluid pumps max out at 300 mL/h so if over this prolonged duration may be required
PromptIV rehydration
Responseindications:
Shock
Ongoing frequent vomiting of enteral fluids
Failure to improve despite PO/NG therapy
IV rapid rehydration - 10 mL/kg/h for 4-6 hours - 0.9% N/S + 5% glucose
Or maintenance + Deficit over 24 hours
Shock
Ongoing frequent vomiting of enteral fluids
Failure to improve despite PO/NG therapy
IV rapid rehydration - 10 mL/kg/h for 4-6 hours - 0.9% N/S + 5% glucose
Or maintenance + Deficit over 24 hours
PromptIndication for bloods in gastroenteriris
ResponseRCH:
All children requiring IV fluids before commencing infusion
Severe dehydration, profuse or prolonged losses, altered conscious states
Inappropriate hypertonic fluids (eg: Sports drink) or hypotonic fluids (Eg: diluted formula)
Complex medical or surgical comorbidities or diuretic use
Answer:
Renal disease/diuretic use
Altered conscious state
Doughy skin (Suggesting hyponatraemia)
Home therapy with excessively hypertonic fluids “homemade solutions”
Profuse losses
Losses >24h duration
Ileostomy
Septic/toxic child
Hypoglycaemia
Any child
All children requiring IV fluids before commencing infusion
Severe dehydration, profuse or prolonged losses, altered conscious states
Inappropriate hypertonic fluids (eg: Sports drink) or hypotonic fluids (Eg: diluted formula)
Complex medical or surgical comorbidities or diuretic use
Answer:
Renal disease/diuretic use
Altered conscious state
Doughy skin (Suggesting hyponatraemia)
Home therapy with excessively hypertonic fluids “homemade solutions”
Profuse losses
Losses >24h duration
Ileostomy
Septic/toxic child
Hypoglycaemia
Any child
PromptDischarge Criteria in Dehydration
ResponseChildren with mild dehydration and no serious underlying cause can be discharged with advice on continuing rehydration at home
Consider a review within 48 hours for young infants - RCH
Child has normal vitals/markers of dehydration/looks well
Parental satisfaction and confidence
Time of day
Follow up and plan in place
Documentation (? - really)
Consider a review within 48 hours for young infants - RCH
Child has normal vitals/markers of dehydration/looks well
Parental satisfaction and confidence
Time of day
Follow up and plan in place
Documentation (? - really)