# A premature infant born at 30 weeks gestation is now 12 days old and has been receiving enteral feedings. The nurse notes the infant has developed abdominal distension, bloody stools, and increased gastric residuals. Vital signs show temperature 101.2°F (38.4°C), heart rate 180 bpm, and respiratory rate 65 breaths/min. Which nursing action should be the priority?

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> subject: Maternal Newborn Health

## 문제

A premature infant born at 30 weeks gestation is now 12 days old and has been receiving enteral feedings. The nurse notes the infant has developed abdominal distension, bloody stools, and increased gastric residuals. Vital signs show temperature 101.2°F (38.4°C), heart rate 180 bpm, and respiratory rate 65 breaths/min. Which nursing action should be the priority?

## 보기

1. Increase the feeding volume to meet caloric requirements
2. Administer acetaminophen for fever management
3. Position the infant prone to promote gastric emptying
4. Discontinue enteral feedings and notify the physician immediately **✔ 정답**

**정답: 4**

## 해설

For suspected NEC with abdominal distension, bloody stools, and vital sign changes, the priority is to discontinue enteral feedings and notify the physician immediately to prevent progression. Other options are contraindicated.

## 심화 해설

Clinical Presentation and Immediate Recognition

The infant in this scenario is exhibiting the classic triad of necrotizing enterocolitis (NEC): abdominal distension, bloody stools, and increased gastric residuals. These findings, combined with systemic signs of illness—temperature instability with a fever of 101.2°F (38.4°C), tachycardia at 180 bpm, and tachypnea at 65 breaths/min—paint a picture of a rapidly deteriorating preterm neonate. NEC remains one of the most devastating gastrointestinal emergencies in neonates, and its diagnosis relies on a set of nonspecific clinical, laboratory, and radiological findings rather than a single pathognomonic test [1]. The modified Bell staging system, commonly used to classify NEC severity, was originally developed to guide treatment decisions, and in a case with these overt signs, the clinical stage is already advanced [1].

Why the Priority Action is to Discontinue Feedings and Notify the Physician

The cornerstone of medical management for suspected or confirmed NEC is immediate bowel rest and decompression. The pathophysiology of NEC involves a complex interplay of intestinal ischemia, an immature gut barrier, and formula feeding acting as a substrate for bacterial fermentation and translocation [4]. Continuing enteral feedings, as suggested in option 1, would introduce more substrate into a compromised gut, fueling bacterial overgrowth, increasing intraluminal gas production, and worsening the inflammatory cascade. This directly contradicts the principle of bowel rest. The presence of undigested components, particularly fat in formula, has been shown to mediate NEC severity in experimental models, reinforcing the critical need to halt all enteral intake immediately [4].

Administering acetaminophen for fever (option 2) addresses a symptom but not the underlying life-threatening pathology. While fever management is a component of supportive care, it is not the priority nursing action when the source of the fever is an acute abdominal emergency requiring definitive intervention. Similarly, positioning the infant prone (option 3) to promote gastric emptying is contraindicated in a neonate with abdominal distension and suspected NEC. A prone position can increase intra-abdominal pressure, potentially compromising an already tenuous respiratory status (note the tachypnea) and does nothing to stop the disease process. The priority is to stop the insult, decompress the stomach with a nasogastric tube to low intermittent suction, and urgently communicate the assessment findings to the physician for further orders, which will likely include abdominal radiographs, broad-spectrum antibiotics, and fluid resuscitation.

Linking Risk Factors to the Pathophysiology

This infant’s history of prematurity (30 weeks gestation) and current receipt of enteral feedings are the two most significant risk factors for NEC. The immunological vulnerability of extremely preterm neonates is profound. A prospective cohort study analyzing adaptive immunity in very and extremely preterm neonates found that a significant proportion (20%) developed sepsis or NEC, highlighting an inherent predisposition linked to an immature immune system . In this fragile state, the introduction of formula feeds can trigger an exaggerated and destructive inflammatory response in the intestinal wall. While NEC predominantly affects preterm infants, it is critical to remember that the disease process is not exclusive to prematurity; term infants with compounding risk factors like perinatal asphyxia and formula feeding are also susceptible, as the gut’s response to hypoxic-ischemic injury shares a common pathway of mucosal damage and bacterial translocation . The nurse’s rapid recognition of these risk factors and the classic clinical presentation is what prompts the correct, life-saving action: stopping the feed and activating the emergency response chain [1][4].References (research sources)

- [1]Diagnosis and Staging of Necrotizing Enterocolitis: Current Controversies and a Phenotype-Based Framework.Research articleDevi U, Weitkamp JH, Shenberger JS, Garg PM. (2026) · DOI: 10.3390/children13060758

- [4]A digestive cartridge reduces intestinal injury in a murine model of necrotizing enterocolitis.Research articleWang SZ, Fernandes D, Tsikis ST, Hirsch TI, Pan A, Quigley M, Ruiz V, Fligor SC, Petty CR, Loring G, Davia S, Kang J, Puder M. (2026) · DOI: 10.1371/journal.pone.0348200

## 임상 시나리오

Clinical Case: Managing Suspected Necrotizing Enterocolitis (NEC)

**Scenario:** A 12-day-old, 30-week gestation premature infant on enteral feedings develops abdominal distension, bloody stools, and increased gastric residuals. Vital signs reveal a temperature of 101.2°F (38.4°C), heart rate 180 bpm, and respiratory rate 65 breaths/min.

Priority Nursing Actions

- **Immediate Cessation of Feedings:** Stop all enteral nutrition immediately to initiate bowel rest. This reduces the metabolic demand on the gut and removes the substrate (formula or breast milk) that fuels bacterial fermentation and translocation.

- **Provider Notification:** Notify the physician or neonatal nurse practitioner urgently. This is a medical emergency requiring immediate collaborative intervention, including diagnostic workup and intravenous access.

- **Gastrointestinal Decompression:** Insert a nasogastric or orogastric tube and place it to low, intermittent suction to decompress the stomach and intestines, relieving distension and reducing the risk of aspiration.

- **Hemodynamic and Respiratory Support:** Initiate continuous monitoring of vital signs, oxygen saturation, and perfusion. Administer supplemental oxygen or respiratory support as needed for the tachypnea and tachycardia, which are signs of systemic illness and potential sepsis.

- **Diagnostic Preparation:** Prepare the infant for immediate abdominal radiographs (anteroposterior and left lateral decubitus views) to assess for pneumatosis intestinalis, portal venous gas, or free air, which are hallmark findings of advanced NEC.

- **Intravenous Access and Fluid Resuscitation:** Establish IV access for fluid boluses as ordered to manage third-spacing and sepsis. Initiate broad-spectrum IV antibiotics after blood cultures are drawn, as per unit protocol.

Clinical Reasoning and Pathophysiology

The classic triad of abdominal distension, bloody stools, and increased gastric residuals in a preterm infant is highly specific for NEC. The underlying pathophysiology involves a perfect storm of intestinal ischemia, an immature mucosal barrier, and enteral feeding acting as a substrate for pathogenic bacteria. Continuing feedings would exacerbate the inflammatory cascade and increase the risk of intestinal perforation. Bowel rest is the single most critical initial step to halt disease progression. Systemic signs like fever, tachycardia, and tachypnea indicate a systemic inflammatory response, requiring urgent stabilization beyond just local gut measures.

Nursing Considerations and Pitfalls

- **Do not delay notification** to attempt other interventions first. NEC can progress rapidly to perforation and sepsis.

- **Accurate measurement of abdominal girth** should be performed every 4 hours, marking the site of measurement to ensure consistency.

- **Strict hemodynamic monitoring** is essential, as infants can deteriorate quickly due to fluid shifts and sepsis.

- **Family communication:** Provide clear, calm explanations to the parents about the sudden change in condition and the rationale for stopping feedings and initiating intensive care.

## 핵심 개념

- **Necrotizing Enterocolitis** — Necrotizing enterocolitis. A life-threatening condition characterized by ischemic necrosis and inflammation of the intestine, primarily occurring in premature infants. Symptoms include abdominal distension, bloody stools, increased gastric residuals, and systemic signs of sepsis.
- **Gastric Residuals** — Gastric residual volume. The amount of stomach contents aspirated through a gastric tube before or during enteral feeding. An increase in volume or a change in color (green, brown, bloody) may indicate pathological conditions such as intestinal motility disorders or NEC.
- **Abdominal Distension** — Abdominal distension. A condition where the abdomen is swollen due to accumulation of intestinal gas or fluid. It is one of the major early signs of NEC, indicating intestinal wall edema or ileus.
- **Premature Infant** — Premature infant. Generally, a newborn born before 37 weeks of gestation. Due to organ immaturity, they are vulnerable to NEC, respiratory distress syndrome (RDS), intraventricular hemorrhage (IVH), etc.
- **Enteral Feedings** — Enteral nutrition. A method of delivering nutrients directly into the gastrointestinal tract through the mouth or a gastrointestinal tube (such as a nasogastric tube). It is essential for the growth and development of premature infants, but it is also a major risk factor for the development of NEC.

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