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Difficulty: MediumNeonatal Disorders

A 3-day-old female neonate is brought to the emergency department due to three episodes of bilious vomiting over the past four hours. The infant was born at 39 weeks of gestation via uncomplicated vaginal delivery and was discharged home yesterday. On physical examination, she appears lethargic, her abdomen is mildly distended, and her heart rate is 175/min. Arrange the following steps in the most appropriate sequential order for the evaluation and management of this patient's suspected condition.

  1. 1Initiate nothing by mouth (NPO) status, administer intravenous fluid resuscitation, and place an orogastric tube for decompression.
  2. 2Perform an anteroposterior and cross-table lateral plain abdominal radiograph.
  3. 3Obtain an upper gastrointestinal (UGI) contrast series.
  4. 4Perform an emergent exploratory laparotomy.

Answer

The correct sequence is: 1) Initiate nothing by mouth, administer IV fluids, and place an orogastric tube; 2) Perform plain abdominal radiography; 3) Obtain an upper gastrointestinal contrast series; 4) Perform an emergent exploratory laparotomy.
Neonatal bilious emesis is a surgical emergency until proven otherwise, most critically representing malrotation with midgut volvulus. The correct management sequence prioritizes hemodynamic stability and airway protection (IV fluids and orogastric tube), followed by plain radiography to rule out perforation. Only after confirming the absence of free air should an upper GI contrast series be performed to diagnose malrotation, which is then definitively treated with an emergent laparotomy.

Step-by-Step Solution

1
Stabilize the patient and decompress the gastrointestinal tract.
Intravenous fluids and an orogastric tube are placed.
Neonates with bilious emesis are at high risk for aspiration and hypovolemic shock. Stabilization must precede diagnostic imaging.
2
Obtain an anteroposterior and cross-table lateral plain abdominal radiograph.
The X-ray is reviewed for signs of free intra-abdominal air.
A plain radiograph is mandatory to rule out bowel perforation, which would require immediate surgical intervention and contraindicate the administration of contrast.
3
Perform an upper gastrointestinal (UGI) contrast series.
The anatomy of the duodenum and duodenojejunal flexure is visualized.
If plain films do not show perforation, the UGI series is the gold standard for diagnosing malrotation and midgut volvulus in a hemodynamically stable neonate.
4
Proceed to operative management.
An exploratory laparotomy (often a Ladd procedure) is performed.
Midgut volvulus is a surgical emergency. Once confirmed by UGI series, immediate operative untwisting of the bowel and division of Ladd bands is required to prevent bowel necrosis.

Key Concept

Evaluation and management sequence for neonatal bilious emesis (suspected malrotation with midgut volvulus)
Estimated Time:1m 15s
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Topics

Neonatal Disorders

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