PediatricsBeginner

Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit

Calculates 24-hour and hourly maintenance fluids (4-2-1 rule), dehydration fluid deficit, and emergent bolus volume.

Clinical Parameters

4 Variables
Yes, this condition applies to the patient

Awaiting Clinical Parameters

Configure the patient variables on the left and select Calculate Result to generate the clinical score and stratification.

Verified 2026 GuidelinesInstant Calculation
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High Yield Prometric TopicPediatrics

Tested on Gulf Medical Boards (DHA, SMLE, MOH & HAAD)

Clinical calculations and diagnostic scoring systems like Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit frequently appear on Prometric exams. Master high-yield clinical vignettes with instant AI-powered pathophysiology rationales.

Clinical Significance & Diagnostic Standard
2026 Clinical Reference

What is the Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit?

📋Clinical Summary & Definition Capsule

The Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit is an evidence-based clinical decision rule engineered to quantify diagnostic probability, stratify clinical severity, and guide therapeutic decision-making in pediatrics practice. Implements the AAP-endorsed Holliday-Segar method for pediatric maintenance fluid calculation alongside clinical dehydration deficit estimation and isotonic fluid safety recommendations to prevent hospital-acquired hyponatremia. Clinical scoring tools like Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit are essential in acute and outpatient management, enabling clinicians to objectively differentiate between low-risk candidates suitable for conservative therapy and high-risk patients requiring urgent interventions. Verified against current 2026 clinical standards, this tool is extensively tested on Gulf health authority licensing exams including DHA (Dubai), SMLE (Saudi Arabia), MOH, HAAD/DOH (Abu Dhabi), OMSB (Oman), and QCHP (Qatar).

💡Clinical Pearls & Diagnostic Utility

Foundational pediatric calculation that prevents fluid overload and hyponatremic brain injury while ensuring physiological organ perfusion.

Mathematical Formulation

Formula & Calculation Parameters

The mathematical equation and clinical variables required to calculate Pediatric Maintenance Fluids (Holliday-Segar) & Dehydration Deficit:

Holliday-Segar 4-2-1 Rule:
• 1st 10 kg: 4 mL/kg/hr (100 mL/kg/day)
• 2nd 10 kg: +2 mL/kg/hr (+50 mL/kg/day)
• > 20 kg: +1 mL/kg/hr (+20 mL/kg/day)
Deficit Replacement: 50% over first 8 hours + 50% over next 16 hours.
Risk Stratification

Score Interpretation & Clinical Stratification

Score RangeClinical InterpretationRisk Tier
≤ 40Infant Fluid Rate (< 40 mL/hr)blue
41 – 100Standard Child Fluid Rate (40 - 100 mL/hr)green
101 – 180Adolescent / Deficit Rehydration Rate (100 - 180 mL/hr)yellow
≥ 181High Rehydration Rate (> 180 mL/hr / Monitor Electrolytes)red
Clinical Limitations & Contraindications

When to Exercise Caution

Fluid restriction (e.g., 50–70% of maintenance) is required in SIADH, acute oliguric renal failure, congestive heart failure, and post-neurosurgery.

Medical Review & Guidelines Compliance
MD

Clinical Review Board

Dr. Muhammad Nouman, MBBS

Capital Medical University | PMDC Reg No: 117744-P

Clinical Audit Status

✓ Verified for 2026 Guidelines

Last updated: 2026-08-08

Peer-Reviewed Medical Literature

  • Holliday MA, Segar WE. The maintenance need for water in parenteral fluid therapy. Pediatrics. 1957;19(5):823-832.
  • Feld LG, et al. Clinical Practice Guideline: Maintenance Intravenous Fluids in Children. Pediatrics. 2018;142(6):e20183083.
  • American Academy of Pediatrics. Pediatric Advanced Life Support (PALS) Provider Manual. 2020.