A 4-year-old child weighing 18 kg is admitted for dehydration. Using the standard Holliday-Segar formula, what is the calculated 24-hour maintenance fluid volume requirement?
Answer and explanation
Correct answer: B. 1,400 mL/day
- Step 1: Apply the Holliday-Segar method: 100 mL/kg for the first 10 kg, and 50 mL/kg for each kilogram between 11 and 20 kg.
- Step 2: For an 18 kg child: .
Answer
1,400 mL/day.
Why not the others: 1,800 mL/day assumes 100 mL/kg across all 18 kg; 1,200 mL/day miscalculates the second tier; 1,000 mL/day accounts for only the first 10 kg.
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