Peds and IV Flashcards
(42 cards)
dehydration tonicity
look at salt
Na 15 - hyper
normal saline
154 mEq Na/L
D5W
dextrose in water
lactated ringers
NaCl, KCl, CaCl, Na lactate in water
deficit
half given over 8 hours
half given over next 16 hours
deficit Na and K
important in hypo or hypernatremic dehydration
bolus therapy
isotonic
20mL/kg
normal saline or LR
vomiting
no lactated ringers
exacerbates metabolic alkalosis
maintenance
daily water needs based on energy expenditure
holliday segar method
for maintenance
hourly calc - 4-2-1
4 mL/kg/hr - first 10kg
2 - 11-20kg
1 - >21kg
24 hour calc
100 mL/kg/day - first 10 kg
50 - 11-20kg
20 - >21 kg
fluid deficit
%dehydration of pre-illness weight x 1000mL/kg
child mild to severe
-3/6/9%
infant mild to severe
-5/10/15%
clammy skin
severe dehydration
tenting skin
moderate dehydration
sunken fontanelle
severe dehydration
<2sec cap refill
mild dehydration
maintenance of Na and K
3Na x 100mL of water
2K x 100mL of water
Na - extracellular
K - intracellular
illness < 3 days
80% ECF deficit
20% ICF
illness > 3 days
60% ECF deficit
40% ICF
Na deficit
fluid deficit X
proportion from ECF X
Na concentration in ECF
K deficit
fluid deficit X
proportion fro ICF X
K concentration in ICF
K
150
Na
145
less than 10kg
give 0.25 NS
10-20kg
give 0.3 NS