NORCET 5 mains: Calculate required fluid using Holiday-Segar Pediatric fluid dose for a 20-kg child?

NORCET 5 mains

Child Health Nursing (Pediatrics)

Medium

Appeared in: NORCET 5 mains

Explanation

The Holliday-Segar method is the standard for calculating daily maintenance fluid requirements in children.
The formula is tiered based on weight: 100 mL/kg for the first 10 kg, 50 mL/kg for the next 10 kg (11-20 kg), and 20 mL/kg for any weight above 20 kg.
For a 20 kg child, the calculation involves the first two tiers.
Calculation for the first 10 kg: 10 kg × 100 mL/kg = 1000 mL.
Calculation for the next 10 kg: 10 kg × 50 mL/kg = 500 mL.
The total daily fluid requirement is the sum of these amounts: 1000 mL + 500 mL = 1500 mL.

Option A: This value only accounts for the fluid requirement of the first 10 kg of the child's weight (10 kg × 100 mL/kg = 1000 mL) and neglects the requirement for the subsequent 10 kg.
Option B: This is an incorrect calculation. It may result from misremembering the formula, for instance, by incorrectly applying 20 mL/kg for the second 10 kg instead of the correct 50 mL/kg (1000 mL + 10 kg × 20 mL/kg = 1200 mL).
Option D: This value overestimates the fluid needs for a 20 kg child. It represents the fluid requirement for a heavier child.

Clinical Relevance

Nursing practice connection: Use the key finding related to Calculation of pediatric maintenance fluids using the Holliday-Segar method to guide bedside assessment, documentation, and the next nursing action.
Accurate fluid calculation is critical in pediatrics to prevent dehydration or fluid overload, both of which can have severe consequences in children due to their smaller body size and fluid reserves.
Nurses frequently use this formula to set IV pump rates and monitor fluid balance. The hourly rate can be quickly estimated using the '4-2-1 rule': (4 mL/kg × 10 kg) + (2 mL/kg × 10 kg) = 60 mL/hr.
What if? If the child had a fever, the maintenance fluid requirement would increase by approximately 10-12% for each degree Celsius above 38°C, requiring the nurse to recalculate and adjust the infusion rate.

How to Approach the Question

Identify the core task from the question: Calculate the daily maintenance fluid for a pediatric patient of a specific weight.
Recall the standard formula used for this calculation, which is the Holliday-Segar method, also known as the 100/50/20 rule.
Break down the patient's weight (20 kg) into the tiers defined by the formula: the first 10 kg and the next 10 kg.
Apply the correct multiplier to each weight tier: 100 mL/kg for the first 10 kg and 50 mL/kg for the second 10 kg.
Calculate the fluid volume for each tier separately.
Sum the volumes from all applicable tiers to determine the total 24-hour fluid requirement and select the matching option.

Concept Tested & Keywords

Concept Tested: Calculation of pediatric maintenance fluids using the Holliday-Segar method.
Stem keywords: Calculate, required fluid, Holiday-Segar, Pediatric fluid dose, 20-kg child
Lead-in keywords: Calculate
Clinical cues: 20-kg child: This specific weight is the key input for the calculation.

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) pp. 55-57, 56-58

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