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ecf breaks into
interstitial and intravascular(plasma)
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fluid req 3-10kg wt
100ml/kg
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fluid req 11-20 kg wt
1000ml plus 50ml/kg for each kg above10 kg
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fluid req >20kg
1500 ml plus 20ml/kg for each kg above 20 kg
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pts with decreased fluid req
CHF, patent ductus arteriosus(shuts closed after birth, harder to shut if fluid overloaded, 1st couple days can fluid restrict), renal dysfunction, increased ICP
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Na electrolyte req
2-6 mEq/kg/d
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K electrolyte req
1-3 mEq/kg/d
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common causes of dehydration in peds
gastroenteritis, GI sx occuring w other disease states, infnts cannot respond independently
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signs of dehy in peds
decreased UOP, tachy, sunken fontanelles, increased capillary refill time, altered mental status, decreased level of cons, hypotension (late sign)
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mild dehydration
3-5%, normal HR, BP, fontanelle, slightly dry mucus, warm, normal capilary reill, slight inc in thirst slight dec in UOP
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mod dehy
6-9%, increase HR, normal BP, sunken font, dry mucus, delayed capillary refill, mod inc in thirst, less than 1ml/kg/hr UOP
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severe dehy
10% or greater, inc HR, slight dec or normal BP, sunken fontanelle, dry mucus, cool, mottled extremities, sign inc in thirst, minimal UOP
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oral rehydration
consider in mild-mod dehy, vomiting is not a CONTRA, 50-100ml/kg over a three to four hour period
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contraindications to oral rehydration
hemodyn instability, serum Na<120 or >160, acute surgical abdomen, altered mental status, severe respiratory distress, ileus, continued vomiting despite attempts at oral rehydration(can admit to hospital)
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IV rehydration (5)
- 1. assess degree of dehydration
- 2, calc replacement fluids
- 3. calc main fluids
- 4.calculate ongoing losses
- 5. determine how quickly to admin the replacement and main fluids
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