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Difficulty: EasyPediatric Gastrointestinal Disorders

Parents arrive at the triage desk with their 14-day-old male infant, reporting that he suddenly began vomiting dark green fluid 4 hours ago. Previously, the infant had been breastfeeding well and passing normal transitional stools. On triage assessment, the infant appears lethargic and pale. Vital signs reveal a heart rate of 195/min, respiratory rate of 65/min, and blood pressure of 55/30 mm Hg. Physical examination demonstrates a rigid, distended abdomen with diffuse guarding and absent bowel sounds. Capillary refill time is 5 seconds. An emergency portable abdominal radiograph shows a paucity of gas in the distal bowel. What is the most appropriate next step in the management of this patient?

  1. A
    Bowel rest, fluid resuscitation, and clinical observation
  2. B
    Administration of a water-soluble contrast enema
  3. Immediate exploratory laparotomyAnswer
  4. D
    Fluoroscopic upper gastrointestinal series
  5. E
    Ultrasonography of the abdomen

Answer

Immediate exploratory laparotomy
The correct answer is immediate exploratory laparotomy. This neonate presents with bilious emesis, a rigid abdomen, absent bowel sounds, and profound hemodynamic instability (shock). This is the classic presentation of a surgical emergency, most likely midgut volvulus complicated by ischemic bowel. In any patient presenting with an acute surgical abdomen (peritonitis) and hemodynamic instability, immediate surgical exploration is mandatory to prevent irreversible bowel necrosis and death. Delaying surgery for further diagnostic imaging is contraindicated.

Step-by-Step Solution

1
Identify the primary clinical presentation.
A 14-day-old neonate presents with sudden-onset bilious (dark green) emesis, abdominal rigidity, absent bowel sounds, and profound hemodynamic instability (tachycardia, hypotension, and prolonged capillary refill).
Recognizing the severity of the presentation is crucial for determining the appropriate clinical pathway.
2
Determine the most likely underlying diagnosis.
The clinical picture is highly suspicious for midgut volvulus leading to ischemic bowel.
Bilious emesis in a neonate must be considered a surgical emergency until proven otherwise. The addition of peritonitis and shock strongly indicates strangulated bowel.
3
Select the appropriate intervention based on the patient's stability.
Immediate surgical exploration.
Hemodynamically unstable patients with an acute surgical abdomen require immediate operative intervention to prevent bowel necrosis and death, without delaying for further diagnostic imaging.

Key Concept

Management of acute pediatric gastrointestinal emergencies
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Topics

Pediatric Gastrointestinal Disorders

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