CLINICAL EVIDENCE CENTER
Pediatric Precision Dosing Engine
Structured, weight-based volumetric oral dispenser, Holliday-Segar 4-2-1 maintenance fluids, and Broselow PALS emergency resuscitation protocols aggregated from Nelson 22nd Ed., Harriet Lane Handbook, and AAP 2024 Guidelines.
35+ Core Medications
Mosteller BSA & Schwartz GFR
Holliday-Segar 4-2-1 Fluids
Broselow PALS Emergency Zones
Medication Selection & Clinical Formulation
ANTIPYRETIC / ANALGESICPatient Parameters
Step 1
Quick Age & Weight Presets:
Patient Body Weight
14.0 kg
1 kg (Preterm)
14 kg (Toddler)
80 kg (Adolescent)
Patient Body Height
92 cm
Mosteller BSA
0.60 m²
Schwartz eGFR
106 mL/min
Smart Volumetric Dispenser
VERIFIED • SAFE
Paracetamol (Acetaminophen)
Fever & Pain
VOLUME TO ADMINISTER (SINGLE DOSE)
8.8 mL
Equivalent to 210 mg active drug
Total 24h: 630–840 mg/day (in 3–4 divided doses)
Frequency
Every 4–6 hours PRN
Weight Basis
15 mg/kg/dose
Never use household kitchen spoons: Spoon sizes vary from 2.5 mL to 7.8 mL. Always use this calibrated oral dispenser.
Step-by-Step Calculation Derivation
Standard pediatric dose: 10–15 mg/kg per dose. Maximum daily: 75 mg/kg/day or 4,000 mg/day.
Holliday-Segar 4-2-1 Maintenance Rates
14.0 kg
HOURLY INFUSION RATE
48 mL/hr
Infusion pump setting
24-HOUR TOTAL VOLUME
1,152 mL/day
Basal physiological volume
Holliday-Segar 4-2-1 Derivation:
AAP 2018 Clinical Practice Guideline Mandate:
Hospitalized pediatric patients (28 days to 18 years) requiring maintenance IV fluids must receive isotonic solutions (D5 0.9% NS with 20 mEq/L KCl) rather than hypotonic fluids (0.2% NS) to prevent hospital-acquired acute hyponatremic encephalopathy.
WHO & AAP Dehydration Assessment
Deficit Protocol
CALCULATED DEFICIT
700 mL
Total body fluid loss
TOTAL 24H FLUIDS
1,852 mL
Maint + Deficit
Diarrheal Stool Loss:
140 mL / loose stool
Emesis Loss:
70 mL / vomit episode
Two-Phase Rehydration Schedule:
Phase 1: 0–8 Hours
Half of deficit + 8h maintenance: ~735 mL (92 mL/hr).
Phase 2: 8–24 Hours
Remaining deficit + 16h maintenance: ~1,117 mL (70 mL/hr).
Airway & Intubation Sizing
Airway| ETT Uncuffed (Age/4 + 4) | 4.5 mm |
| ETT Cuffed (Age/4 + 3.5) | 4.0 mm |
| ETT Depth at Lip (3 × ETT Size) | 13.0 cm |
| Laryngoscope Blade | Miller 2 / Mac 2 |
| Suction Catheter | 10 Fr |
Defibrillation & Electrical Therapy
Joules| Defibrillation 1st Shock (2 J/kg) | 28 Joules |
| Defibrillation Subsequent (4 J/kg) | 56 Joules |
| Cardioversion SVT/VT (0.5–1 J/kg) | 7–14 Joules |
| Emergency Fluid Bolus (20 mL/kg) | 280 mL |
Emergency Resuscitation Pharmacology (PALS Core)
Critical Care| Drug | Clinical Indication | Weight-Based Formula | Calculated Dose | Volume (mL) |
|---|---|---|---|---|
| Epinephrine 1:10,000 | Cardiac Arrest / Anaphylaxis | 0.01 mg/kg (0.1 mL/kg) | 0.14 mg | 1.40 mL |
| Amiodarone IV/IO | Refractory VF / pVT | 5 mg/kg rapid bolus | 70.0 mg | Dilute in D5W |
| Atropine IV/IO | Symptomatic Bradycardia | 0.02 mg/kg (Min 0.1 mg) | 0.28 mg | Rapid push |
| Adenosine (1st Dose) | SVT Rapid Push | 0.1 mg/kg (Max 6 mg) | 1.40 mg | Follow with 5mL NS flush |
| Adenosine (2nd Dose) | Persistent SVT | 0.2 mg/kg (Max 12 mg) | 2.80 mg | Follow with 5mL NS flush |
| 10% Dextrose (D10W) | Acute Hypoglycemia | 2.0 mL/kg (0.2 g/kg) | 2.8 g | 28.0 mL |
| Naloxone IV/IM | Opioid Overdose | 0.1 mg/kg (Max 2 mg) | 1.40 mg | Repeat q2–3m PRN |
Heart Rate
90–140 bpm
Respiratory Rate
24–40 /min
Systolic BP
80–100 mmHg
Normal Temp
36.5–37.5 °C
Historical Rules vs Modern Evidence-Based Benchmark
Adult Reference:
mg
Clark's Rule
(Weight_lbs / 150) × Adult
102.7 mg
Young's Rule
[Age / (Age + 12)] × Adult
71.4 mg
Fried's Rule
(Age_months / 150) × Adult
80.0 mg
Modern Weight-Based
Gold Standard (mg/kg)
210.0 mg
Modern BSA Method
(BSA / 1.73) × Adult
173.4 mg
Why Historical Rules are Obsolete: Children have immature CYP450 enzyme systems, fluctuating glomerular filtration rates, and high body water content (75% in infants vs 55% in adults). Classical age/weight formulas dangerously underdose young children or risk toxicity.
Comprehensive 35+ Pediatric Formulary & Safety Compendium
| Drug & Brand | Class | Pediatric Dose | Available Formulations | Clinical Pearls & Guardrails |
|---|
Clinical & Educational Disclaimer: Pediatric dosages, volumetric measurements, fluid infusion rates, and Broselow equipment sizes must be clinically verified against patient weight, gestational age, renal function, and institutional protocols by a licensed healthcare professional based on individualized clinical evaluation.