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Zorluk: ZorPediatric Gastrointestinal Disorders

A female infant born at 26 weeks gestation is evaluated in the neonatal intensive care unit on day 16 of life. The nursing staff notes that she has become increasingly lethargic over the last 6 hours and has had multiple episodes of apnea and bradycardia. She has been tolerating small volumes of expressed breast milk via an orogastric tube. Vital signs show a temperature of 35.1°C (95.2°F), heart rate of 178/min, and blood pressure of 42/22 mm Hg. Physical examination reveals a tense, shiny, and grossly distended abdomen with absent bowel sounds. Capillary refill time is 4 seconds. Laboratory studies demonstrate a leukocyte count of 3,200/mm³ and a serum bicarbonate of 11 mEq/L. A supine anteroposterior abdominal radiograph displays air in the bowel wall and a distinct area of radiolucency outlining the falciform ligament. Which of the following is the most appropriate next step in management?

  1. A
    Discontinue enteral feeds, insert an orogastric tube, and start broad-spectrum intravenous antibiotics
  2. B
    Computed tomography scan of the abdomen
  3. Immediate exploratory laparotomyCevap
  4. D
    Administer intravenous sodium bicarbonate
  5. E
    Switch enteral feeds to a hypoallergenic, hydrolyzed formula

Cevap

The correct answer is immediate exploratory laparotomy.
The correct answer is immediate exploratory laparotomy. This premature infant presents with severe necrotizing enterocolitis (NEC), characterized by temperature instability, apnea, shock, a distended abdomen, and pneumatosis intestinalis. The critical differentiating finding in this vignette is the 'radiolucency outlining the falciform ligament' on a supine radiograph. This is the classic 'football sign', representing massive pneumoperitoneum due to intestinal perforation. While early-stage NEC is managed conservatively with bowel rest, gastric decompression, and broad-spectrum antibiotics, the presence of pneumoperitoneum is an absolute indication for immediate surgical intervention to resect necrotic bowel and control abdominal sepsis.

Adım Adım Çözüm

1
Identify the primary diagnosis based on the clinical presentation.
The premature infant with feeding intolerance, temperature instability, shock, abdominal distension, and pneumatosis intestinalis is experiencing necrotizing enterocolitis (NEC).
These are the classic hallmark findings of NEC in a high-risk premature neonate.
2
Interpret the critical radiographic finding.
The radiolucency outlining the falciform ligament on a supine radiograph is known as the 'football sign', which indicates pneumoperitoneum (free intra-abdominal air).
Air escaping from a perforated bowel collects anteriorly in the supine patient, highlighting the falciform ligament.
3
Determine the definitive management based on the complication.
Select immediate exploratory laparotomy.
While early NEC is managed medically, the presence of pneumoperitoneum indicates a bowel perforation, which is an absolute indication for emergency surgical intervention.

Anahtar Kavram

Pneumoperitoneum (indicated by the 'football sign') in the setting of necrotizing enterocolitis is an absolute indication for emergency exploratory laparotomy.
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Pediatric Gastrointestinal Disorders

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