PICU · NICU Fluid Calculator
Quick Recipe ⚡
👶 Patient
Weight
850g
Bag Volume
250 mL
500 mL
1000 mL
30 mL
mL/kg/d
mL/day total
mL/hr
Fluid Rate 120 mL/kg/d
💊 Drip Order
—
mg/kg/min
GIR
—
mL/hr
Run rate
—
mL/day
Daily vol
Central line? → Heparin
0.5 U/mL final · 500 U/mL stock
📋 Mix Sheet ▶
⚗️ Electrolyte Delivery · tap column header for math
🍬 Dextrose
Dex %
Target GIR
Delivery Target
None
D5
D10
D12.5
D15
D20
Fine Adjust
10%
Result
GIR — mg/kg/min
🧂 Sodium
Na via base fluid
Delivery Target mEq/kg/d
1
2
3
4
Fine Adjust
3.0mEq/kg/d
NS Source auto-fills slider
¼NS
½NS
NS
Result
— mEq/kg/d delivered
🍌 Potassium
K additive
Delivery Target mEq/kg/d
0
1
2
3
4
Fine Adjust
2.0mEq/kg/d
Source
KCl 2 mEq/mL
KCl 1 mEq/mL
K-Acetate 2
Result
Add —
🦴 Calcium
Ca additive
Delivery Target mg/kg/d
None
100
200
300
Fine Adjust
200mg/kg/d
Source
Ca-Gluc 10%
Ca-Gluc 5%
CaCl₂
Result
Add —
📐 The Math Behind It
▶ expand
ONE FORMULA dose × weight = total/day total ÷ conc = mL/day × (bag÷daily) = mL to add Na is in the base fluid: conc × bagVol = mEq in bag nothing to draw up GIR: Dex% × rate ÷ 144 = mg/kg/min Stoich: A/B = C/D solve C = A×D/B same calc every electrolyte LIVE EXAMPLE Patient: 850g · 120 mL/kg/d · 250mL bag Potassium: 2 × 0.85 = 1.70 mEq/day ÷ 2 mEq/mL = 0.85 mL/day × 250÷102 = 2.08 mL → add ✓ Calcium: 200 × 0.85 = 170 mg/day ÷ 100 mg/mL = 1.70 mL/day × 250÷102 = 4.17 mL → add ✓ Sodium (base fluid): ½NS = 0.077 mEq/mL × 250mL = 19.25 mEq Na in bag GIR: 10% × 120 ÷ 144 = 8.3 mg/kg/min D-W base + KCl Ca = Final ✅ GIR — Na — mEq K — Ca — Run — mL/hr Scale factor: bag ÷ dailyVol = fraction mL/day × fraction = add