Posted by Laura on November 2, 2010
If a baby is at 9kg, what is the fluid maintenance requirement needed in a day, and what would you set the rate on the pump to be?
100mL/kg for first 10 kg = 900mL
50mL/kg for 2nd 20 kg = 0
20mL/kg for remainder of wt in kg = 0
Total for this example = 900mL in a day
1000mL divided by 24 hrs = 37.5 mL/hr
(A shorter way to see this: For the first 10 kg of weight, give 100 mL/kg fluid. For 11-20 kg, give 1000 mL + 50 mL/kg for each kg over 10 kg. For a child over 20kg, give 1500mL + 20mL/kg for each kg over 20 kg)
Maintenance requirements for water of individuals is determined by their caloric expenditure.
Problem: The infant on the floor is currently producing 1 diarrheal stool q 3 h and refusing to drink. Clinical findings of dry mucous membranes, poor skin turgor, markedly decreased urine output, and tachycardia with normal BP and capillary refill suggest 10% fluid deficit. Rectal temperature is 37° C; serum Na, 136 mEq/L; K, 4 mEq/L; Cl, 104 mEq/L; and HCO3, 20 mEq/L. The doctor has ordered fluid volume replacement for this 25kg child. What would the IVF maintenance rate be set at?
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