Pediatric IV Fluid Calculation Tool
The Pediatric IV Fluid Calculation Tool estimates the precise hourly rate (ml/hr) based on patient weight, dehydration levels, and specific fluid needs. This tool helps medical professionals accurately determine infusion rates to ensure safe and effective patient hydration. Whether you are correcting dehydration, managing ongoing losses, or calculating maintenance for post-operative care, this resource simplifies complex dosing math.
How Hourly Rate Is Calculated
The hourly rate represents the specific speed an IV pump must deliver fluids to meet a child's total needs over a set time. We use the standard Holliday-Segar method to establish a baseline for maintenance needs.
100 mL/kg (1st 10 kg) + 50 mL/kg (2nd 10 kg) + 20 mL/kg (remainder)
Where:
- 100/50/20 Rule = Maintenance fluid requirement per day
- Weight × % Dehydration × 10 = Replacement fluid volume
First, calculate the maintenance fluids based on the weight categories. Next, determine the replacement volume by multiplying the weight by the dehydration percentage and by 10 to find the fluid deficit. Then, add any additional fluids specified for ongoing losses to get the total volume. Finally, divide the total volume by the administration timeframe to find the hourly rate. This method ensures accuracy for safe hydration.
What Your Hourly Rate Means
This number tells you exactly how to set the IV pump to keep the child safely hydrated without risking fluid overload. Use the result to match the therapy intensity to the patient's specific clinical condition.
Standard Maintenance (60–80 ml/kg/day): Use this range for well children or post-operative patients who simply need normal daily fluids to match their metabolic needs.
Mild Correction (80–100 ml/kg/day): This rate helps treat mild dehydration, commonly caused by vomiting or diarrhea, while preventing shock.
Aggressive Correction (100–130 ml/kg/day): Select this range for moderate to severe dehydration cases requiring hospitalization and strict monitoring of electrolytes.
Important: Always watch for signs of fluid overload, such as swelling or breathing difficulty, especially in infants or patients with heart conditions. This tool is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always verify calculations with a qualified healthcare provider.
Pro Tip
Monitor the patient's response frequently and adjust the rate as their condition improves to ensure optimal recovery.