A 6-month-old weighs 7 kg. Using Holliday-Segar, what is the daily maintenance fluid requirement?

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Multiple Choice

A 6-month-old weighs 7 kg. Using Holliday-Segar, what is the daily maintenance fluid requirement?

Explanation:
The main idea here is calculating daily maintenance fluids for a infant using the Holliday-Segar method. For maintenance, you give 100 mL per kilogram per day for the first 10 kg of body weight. So for a 7 kg infant, the calculation is 7 × 100 = 700 mL per day. Why this is the best answer: 700 mL/day directly reflects the 100 mL/kg/day rule for the lowest weight range, which applies to this 7-kg infant. The other amounts don’t fit this standard calculation (they would imply different per-kilogram rates that aren’t consistent with Holliday-Segar for under 10 kg).

The main idea here is calculating daily maintenance fluids for a infant using the Holliday-Segar method. For maintenance, you give 100 mL per kilogram per day for the first 10 kg of body weight. So for a 7 kg infant, the calculation is 7 × 100 = 700 mL per day.

Why this is the best answer: 700 mL/day directly reflects the 100 mL/kg/day rule for the lowest weight range, which applies to this 7-kg infant. The other amounts don’t fit this standard calculation (they would imply different per-kilogram rates that aren’t consistent with Holliday-Segar for under 10 kg).

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