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Calculate daily maintenance fluid for children (4-2-1). Updated 2026-08.
Calculate daily maintenance fluid for children (4-2-1)
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For education and screening only — not a substitute for professional medical assessment. Results should be interpreted by your healthcare provider.
This is the standard 24-hour maintenance volume. In practice, give half in the first 8 hours and half over 16 hours (or per protocol).
Replacement is typically given over 24-48h on top of maintenance — rapid boluses are reserved for shock only (20 mL/kg).
10%+ dehydration is severe — hospital care required, with initial IV bolus per pediatric protocol.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.