The hospitalization protocol includes
diarrhea, euvolemia, vomiting, dehydration, weight gain
DEHYDRATION, HYPONATREMIA

Reversal of dehydration: initial rehydration strategies should focus on rapidly reversing dehydration.Targeting euvolemia: intravenous fluids should be administered at a maximum rate of 100% maintenance with the rate adjusted to take into consideration ongoing losses (e.g., vomiting, diarrhea, third spacing) and oral fluid intake.◦ The intravenous fluid administered should be isotonic with the volume calculated employing the Holliday–Segar formula [◦ The fluids provided should be balanced crystalloid (e.g., PlasmaLyte™, Ringer’s lactate) with electrolytes and dextrose added as deemed appropriate; customized solutions are permitted. Intravenous fluid solutions containing < 130 mEq/L sodium should be avoided as they increase the likelihood of developing hyponatremia.Monitoring◦ Daily weights should be performed and be used to guide the assessment of fluid status with additional fluid adjustments made, as required, to maintain euvolemia and weight gain < 5% above baseline.◦ Complete blood count, electrolytes, and kidney function should be repeated every 24 h.Consider nephrology consultation for all children.