Management of Pediatric Dehydration

Assessment and Classification of Dehydration

The American Academy of Pediatrics recommends assessing the child's hydration status through specific clinical signs to determine treatment intensity, including mild dehydration (3-5% fluid deficit) with normal mental status, moist mucous membranes, normal skin turgor, and normal capillary refill 1, 2
Moderate dehydration (6-9% fluid deficit) is characterized by dry mucous membranes, decreased skin turgor, sunken eyes, and decreased urine output, according to the Centers for Disease Control and Prevention 1, 2
Severe dehydration (≥10% fluid deficit) is a medical emergency requiring immediate intravenous rehydration, marked by severe lethargy or altered consciousness, prolonged skin tenting, cool and poorly perfused extremities, and rapid deep breathing indicating acidosis, as stated by the World Health Organization 1

The World Health Organization recommends administering reduced osmolarity oral rehydration solution (ORS) as first-line therapy for mild to moderate dehydration, with a technique of giving 5-10 mL every 1-2 minutes using a spoon or syringe to prevent triggering more vomiting 1, 2, 3
For moderate dehydration, the American Academy of Pediatrics suggests giving 100 mL/kg ORS over 2-4 hours, replacing ongoing losses with 10 mL/kg ORS for each watery stool and 2 mL/kg for each vomiting episode 1, 2
The Centers for Disease Control and Prevention advises against using sports drinks, apple juice, or other high-sugar beverages as primary rehydration solutions, as they can worsen diarrhea through osmotic effects 1

The American Academy of Pediatrics recommends considering ondansetron for children >4 years with persistent vomiting, at a dose of 0.2 mg/kg orally (maximum 4 mg), to facilitate tolerance of oral rehydration, but not as a substitute for proper rehydration 2, 4
The World Health Organization advises against giving antimotility drugs (loperamide) to children <18 years with acute diarrhea, due to the risk of serious adverse events including ileus and deaths 1, 2, 3

The American Academy of Pediatrics recommends resuming age-appropriate diet immediately during or after rehydration, including continuing breastfeeding on demand, and offering starches, cereals, yogurt, fruits, and vegetables for toddlers on solid foods 1, 2, 3
The Centers for Disease Control and Prevention advises against restricting diet or using prolonged fasting, as this worsens outcomes, and instead recommends early refeeding to reduce severity and duration of illness 1, 3

The World Health Organization recommends practicing proper hand hygiene and infection control, including washing hands after using toilet or changing diapers, before food preparation, before eating, and after handling soiled items, to prevent the spread of infection 1