Fluids
Pediatric maintenance fluids (Holliday–Segar)
Calculate the conventional daily weight-based maintenance estimate, with its exact hourly equivalent.
Intended population: Children older than 28 days and younger than 16 years; routine maintenance only, excluding resuscitation or deficit replacement.
- This is a starting estimate, not a fluid prescription. Illness, non-osmotic ADH, organ dysfunction, obesity, other intake and ongoing losses may require adjustment. Neonates need age-specific calculations. Daily volumes above 2,000–2,500 mL commonly exceed routine needs and require review.
Sources and scoring references
NICE NG29: routine maintenance in children and young people ↗Implementation references reviewed October 28, 2026. Verify applicability and unusual or treatment-changing results against the linked references and local guidance.