This is the 2D companion to the 3D Pediatric Dehydration & Rehydration Therapy Simulator. The clinical math is identical — only the view changes. Maintenance fluid uses the Holliday–Segar rule (mL/day):
first 10 kg → 100 mL/kg
next 10 kg → 50 mL/kg
each kg >20 → 20 mL/kg
The fluid deficit from dehydration is estimated as percent body-weight loss:
deficit (mL) = % dehydration × weight (kg) × 10
Replacement follows the classic pediatric 8/16-hour isotonic schedule:
first 8 h: ½ deficit + ⅓ of 24h maintenance
next 16 h: ½ deficit + ⅔ of 24h maintenance
The 3D sim spends its rendering budget on droplets falling into an orbiting body model — visually appealing, but it makes the actual infusion-rate step at the 8-hour mark and the resulting cumulative-volume curve hard to read precisely. This 2D version instead plots both directly on a scrolling chart: the rate curve shows the step down from the faster first-8-hour rate to the slower next-16-hour rate, and the cumulative-volume curve shows how quickly the running total climbs toward the 24-hour target — the same numbers the 3D sim's hydration bar reports, just readable as a trajectory instead of a single live gauge.
- Oral (ORT) — capped near 10 mL/kg/hr; the standard first-line route for mild–moderate dehydration per WHO/AAP guidance. Severe dehydration forces IV.
- IV line — delivers the calculated rate directly, used for severe dehydration or when oral intake fails.
- The dashed marker at 8 hours on the chart is the schedule's phase boundary, where the infusion rate recalculates from "½ deficit + ⅓ maintenance over 8h" to "½ deficit + ⅔ maintenance over 16h".
With the same slider values, the numbers here track the 3D sim's numbers exactly — the two are the same calculation, verified by direct comparison; the timeline view is the genuinely 2D addition. This mirrors the bedside calculation pediatric residents perform on every admission for gastroenteritis, vomiting, or poor oral intake.