The formula to calculate maintenance IV fluids is:
\[ \text{Daily Fluid Requirement (ml)} = \begin{cases} 100 \times \text{Weight (kg)} & \text{if Weight} \leq 10 \\ 1000 + 50 \times (\text{Weight (kg)} - 10) & \text{if 10 < Weight} \leq 20 \\ 1500 + 20 \times (\text{Weight (kg)} - 20) & \text{if Weight} > 20 \end{cases} \]
\[ \text{Hourly Fluid Requirement (ml/hr)} = \frac{\text{Daily Fluid Requirement (ml)}}{24} \]
The Maintenance Intravenous Fluids (MIVF) calculation determines the daily and hourly fluid needs for children based on their weight. This helps in ensuring proper hydration and fluid balance in pediatric patients.
Consider a child with a weight of 15 kg:
Using the formula:
\[ \text{Daily Fluid Requirement (ml)} = 1000 + 50 \times (15 - 10) = 1250 \text{ ml} \]
\[ \text{Hourly Fluid Requirement (ml/hr)} = \frac{1250}{24} = 52.08 \text{ ml/hr} \]
This means the child needs 1250 ml of fluids daily, or 52.08 ml per hour.
