When calculating oral replacement therapy for a child with moderate dehydration from gastroenteritis, which guideline should be followed?

When calculating oral replacement therapy for a child with moderate dehydration from gastroenteritis, which guideline should be followed?

• A. Intake should equal combined stool and urine output
• B. Stool losses should be replaced in addition to maintenance requirements
• C. Quickly replace fluid deficits
• D. Fluid intake should be equal to twice the stool output

Answer: (B)

When a child has moderate dehydration from gastroenteritis, the goal of oral rehydration is to restore circulating volume by addressing both what was lost (the fluid deficit) and what continues to be lost (ongoing stool and urine losses), on top of meeting daily maintenance needs. Replacing stool losses in addition to maintenance ensures you’re covering the ongoing diarrhea while also correcting the baseline needs. Simply matching intake to stool and urine output isn’t reliable because those losses fluctuate, and focusing only on deficit or only on maintenance would leave the child undercorrected. Replacing the stool losses plus maintenance (and addressing the initial deficit) is the approach that best restores hydration status during moderate dehydration.

When a child has moderate dehydration from gastroenteritis, the goal of oral rehydration is to restore circulating volume by addressing both what was lost (the fluid deficit) and what continues to be lost (ongoing stool and urine losses), on top of meeting daily maintenance needs. Replacing stool losses in addition to maintenance ensures you’re covering the ongoing diarrhea while also correcting the baseline needs. Simply matching intake to stool and urine output isn’t reliable because those losses fluctuate, and focusing only on deficit or only on maintenance would leave the child undercorrected. Replacing the stool losses plus maintenance (and addressing the initial deficit) is the approach that best restores hydration status during moderate dehydration.