# A 2-year-old child is admitted to the pediatric unit with severe diarrhea and dehydration. The child has had 8-10 watery stools in the past 24 hours and shows signs of moderate dehydration. The parents report the child has been refusing solid foods but will take small sips of water. What is the most appropriate initial nursing intervention?

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> subject: Child Health

## 문제

A 2-year-old child is admitted to the pediatric unit with severe diarrhea and dehydration. The child has had 8-10 watery stools in the past 24 hours and shows signs of moderate dehydration. The parents report the child has been refusing solid foods but will take small sips of water. What is the most appropriate initial nursing intervention?

## 보기

1. Encourage the parents to give the child clear liquids like apple juice and sports drinks
2. Start the child on a BRAT diet (bananas, rice, applesauce, toast) immediately
3. Restrict all oral intake until the diarrhea stops completely
4. Administer oral rehydration solution (ORS) in small, frequent amounts **✔ 정답**

**정답: 4**

## 해설

Oral rehydration solution (ORS) is the gold standard for treating moderate dehydration in children with diarrhea, as it optimally balances electrolytes and glucose for absorption. Clear liquids like apple juice can worsen diarrhea, BRAT diet is nutritionally incomplete, and restricting oral intake exacerbates dehydration.

## 심화 해설

Understanding the Clinical Scenario

A 2-year-old child presenting with 8-10 watery stools in 24 hours and signs of moderate dehydration is a classic pediatric emergency. The pathophysiology involves acute gastroenteritis leading to excessive loss of water and electrolytes—primarily sodium, potassium, and bicarbonate—from the intravascular and intracellular compartments. In young children, the ratio of body surface area to volume is higher, and renal concentrating ability is immature, making them far more vulnerable to rapid fluid shifts and dehydration than adults. The fact that the child is refusing solids but accepting small sips of water indicates that the oral route is still partially functional, which is a critical factor in determining the initial intervention.

Analysis of the Correct Answer: Option 4

Administering oral rehydration solution (ORS) in small, frequent amounts is the evidence-based gold standard for managing moderate dehydration due to acute diarrhea. The physiological basis for ORS rests on the principle of sodium-glucose cotransport. The specific ratio of glucose to sodium in standard ORS facilitates the active absorption of sodium ions across the intestinal epithelium, and water follows passively via osmosis. This mechanism remains largely intact even during secretory diarrhea caused by pathogens like rotavirus or enterotoxigenic E. coli. The provided randomized controlled trial reinforces that ORS is the cornerstone of treatment for acute diarrhea-related dehydration, demonstrating its efficacy and safety in a clinical setting [1]. The strategy of offering small, frequent amounts (e.g., 5 mL every 1-2 minutes via syringe or spoon) is crucial to prevent gastric distension and vomiting, which can derail rehydration efforts. This approach directly addresses the fluid and electrolyte deficit while leveraging the gut's preserved absorptive capacity.

Critique of the Incorrect Options

- Option 1: Encourage clear liquids like apple juice and sports drinks. This is contraindicated because these fluids have an inappropriate carbohydrate-to-sodium ratio. Apple juice and sports drinks are hyperosmolar due to high sugar content and contain very little sodium. Their high osmolality can draw water into the intestinal lumen through osmosis, paradoxically worsening the osmotic diarrhea and increasing the volume of stool output. This can rapidly convert a state of moderate dehydration into severe dehydration and electrolyte imbalance.

- Option 2: Start the child on a BRAT diet immediately. While the BRAT diet was historically recommended, it is no longer a first-line intervention during the acute rehydration phase. These foods are low in protein, fat, and essential nutrients. The immediate priority is fluid and electrolyte replacement. Early refeeding with an age-appropriate, unrestricted diet is now recommended as soon as the initial dehydration is corrected, but introducing binding foods like bananas and rice before rehydration is complete does not address the life-threatening fluid deficit.

- Option 3: Restrict all oral intake until the diarrhea stops completely. This is a dangerous and outdated practice. Withholding oral fluids and allowing the gut to "rest" will only accelerate the progression of dehydration. The intestinal mucosa continues to have absorptive function during most diarrheal illnesses. The second study abstract highlights the risks of fluid management in vulnerable pediatric populations, noting that even in severe acute malnutrition, where intravenous fluids carry a risk of fluid overload, the evaluation of rehydration strategies is critical to improving outcomes . For a child without severe malnutrition, restricting oral intake when the gut is functional is a direct path to preventable hypovolemic shock.References (research sources)

- [1]Efficacy and Safety of a Novel Oral Rehydration Solution (ORS) in Managing Diarrhea and Dehydration: A Randomized Study in Indian Patients.RCT/clinical trialKhokhare B, Agrawal N, Siddique M, Gupta A, Pathak K, Tiwari N, Sahu S, Kumar U. (2026) · DOI: 10.7759/cureus.103248

## 임상 시나리오

Clinical Practice Guide: Pediatric Dehydration

Assessment and Triage

For a child with acute watery diarrhea, rapidly classify dehydration status using the WHO's Integrated Management of Childhood Illness (IMCI) criteria. Look for key signs: general appearance (lethargy/irritability), sunken eyes, skin turgor (pinch test returns slowly or very slowly), and drinking behavior (drinks eagerly or poorly). A child with 8-10 watery stools in 24 hours and signs of moderate dehydration requires immediate intervention. Document accurate intake and output, including weighing the child to establish a baseline for fluid deficit calculation (1 kg of acute weight loss ≈ 1 L of fluid loss).

Initial Management: Oral Rehydration Therapy

The priority intervention is administering standard low-osmolarity Oral Rehydration Solution (ORS) such as WHO-ORS. For moderate dehydration, administer 75-100 mL/kg of ORS over 4 hours. Use a syringe, spoon, or dropper to give small, frequent sips (e.g., 5 mL every 1-2 minutes) to minimize vomiting risk. If the child vomits, wait 5-10 minutes and resume at a slower rate. Continue breastfeeding or formula feeding without interruption. The sodium-glucose cotransport mechanism remains functional, making ORS highly effective even during ongoing diarrhea.

Fluid and Diet Misconceptions

Avoid giving clear liquids like apple juice, sports drinks, or soda. These have high osmolality and inappropriate glucose-to-sodium ratios, which can exacerbate osmotic diarrhea and cause hyponatremia. The BRAT diet is no longer recommended as it is nutritionally inadequate and does not shorten the illness course. Once rehydration is complete and vomiting subsides, resume an age-appropriate, unrestricted diet to provide necessary nutrients for gut mucosal repair. Do not withhold food; early feeding reduces intestinal permeability and diarrhea duration.

Monitoring and Escalation

Reassess dehydration status hourly during the rehydration phase. Monitor for signs of improvement: increased urine output, improved skin turgor, moist mucous membranes, and return to normal behavior. If the child cannot tolerate ORS due to persistent vomiting, altered mental status, or if signs of severe dehydration develop (lethargy, inability to drink, very slow skin pinch), transition to intravenous fluids with isotonic crystalloids (e.g., Ringer's Lactate) and consider nasogastric tube placement as a bridge. Strictly monitor for electrolyte imbalances, particularly hypernatremia or hypokalemia, in severe cases.

## 핵심 개념

- **Oral Rehydration Solution (ORS)** — A balanced glucose-electrolyte solution that utilizes sodium-glucose cotransport to enhance fluid absorption in the intestines, the first-line treatment for mild to moderate dehydration from acute diarrhea.
- **Sodium-Glucose Cotransport** — A mechanism in the intestinal epithelium where one glucose molecule facilitates the absorption of one sodium ion, with water following passively; this process remains intact during most diarrheal illnesses.
- **Moderate Dehydration** — A state of fluid deficit typically characterized by signs such as dry mucous membranes, sunken eyes, decreased skin turgor, tachycardia, and irritability, requiring prompt oral or enteral rehydration.
- **BRAT Diet** — An outdated dietary recommendation consisting of Bananas, Rice, Applesauce, and Toast, now discouraged due to its lack of balanced nutrition and insufficient evidence for treating diarrhea.
- **Osmotic Diarrhea** — A type of diarrhea caused by the presence of poorly absorbed, osmotically active solutes in the gut lumen, which draw water into the bowel; can be triggered by high-sugar liquids like juice.

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