2 yr old baby with complain of fever , how much iv fluid to give per min , temp - 102
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IV Fluid Calculation for a 2-Year-Old with Fever (Temp 102°F / 38.9°C)
Step 1 - Estimate the Child's Weight
A typical 2-year-old weighs approximately 12 kg (use actual weight if known).
Step 2 - Maintenance Fluid Rate (Holliday-Segar Method)
This is the standard formula for calculating maintenance IV fluid (MIVF) in children:
| Weight Range | Rate |
|---|---|
| First 10 kg | 100 mL/kg/day (or 4 mL/kg/hr) |
| 10-20 kg | Add 50 mL/kg/day (or 2 mL/kg/hr) |
| >20 kg | Add 20 mL/kg/day (or 1 mL/kg/hr) |
For a 12 kg child:
- First 10 kg = 1000 mL/day
- Next 2 kg = 2 × 50 = 100 mL/day
- Total = 1100 mL/day = ~46 mL/hr = ~0.76 mL/min
Rate per minute = ~0.75-0.8 mL/min for a 12 kg, 2-year-old.
Step 3 - Fever Correction
Fever increases insensible fluid losses. The standard correction is:
+12% increase in fluid requirement for every 1°C rise above 37°C (or +10% per 1°F above 99°F)
- Temp = 102°F = 38.9°C
- Rise above normal = 38.9 - 37 = ~1.9°C
- Extra fluid = 1.9 × 12% = ~23% increase
Fever-adjusted maintenance:
- 1100 mL/day × 1.23 = ~1353 mL/day = ~56 mL/hr = ~0.94 mL/min
So with fever correction, approximately ~0.9-1.0 mL/min (or ~55-56 mL/hr).
Step 4 - IV Fluid Choice
Per AAP guidelines and the Harriet Lane Handbook (23rd ed.), for hospitalized children aged 28 days to 18 years:
- Isotonic fluids (Normal Saline 0.9% or Lactated Ringer's) are recommended as maintenance IVF
- Hypotonic fluids are associated with hospital-acquired hyponatremia and should be avoided in most cases
- If the child has signs of dehydration, add a deficit correction on top of maintenance
Quick Summary Table
| Parameter | Value |
|---|---|
| Assumed weight | 12 kg |
| Baseline maintenance | ~46 mL/hr (~0.76 mL/min) |
| Fever-adjusted rate | ~56 mL/hr (~0.93 mL/min) |
| Fluid of choice | Isotonic (NS 0.9% or LR) |
| Assess for dehydration? | Yes - check skin turgor, cap refill, mucous membranes |
Important Clinical Notes
- Always use actual body weight - the 12 kg assumption above may differ
- If there are signs of moderate/severe dehydration (capillary refill >3 sec, sunken eyes, decreased turgor), give a bolus first: 10-20 mL/kg of isotonic fluid over 30-60 min, then reassess
- Fever of 102°F (38.9°C) in a 2-year-old - evaluate for source of infection (UTI, otitis, pneumonia) before starting IVF
- Monitor urine output (target: 1-2 mL/kg/hr in children)
- Reassess fluid status every 4-6 hours and adjust rate accordingly
- The Harriet Lane Handbook, 23rd ed., Chapter 11 - Fluids and Electrolytes
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