Fluid Maintenance Requirements

Question 1

What is the 4-2-1 rule for maintenance fluids?

Answer 1

1st 10kg = 4cc/kg/hr
2nd 10kg = 2cc/kg/hr
Every kg >20 = 1cc/kg/hr

Question 2

How do you accomodate for an NPO deficit with maintenance fluids?

Answer 2

(maintenance rate x #hrs NPO)

Question 3

What are the estimated evaporated losses?
(minimal, moderate, severe)

Answer 3

Minimal = 0.2 mL/kg/hr
Moderate = 2 - 4 mL/kg/hr
Severe = 4 - 8 mL/kg/hr