Question

Difficulty: HardPediatric Gastrointestinal Disorders

An otherwise healthy neonate, delivered at term 4 days ago, presents to the emergency room after developing green-colored emesis. The parents report three episodes of vomiting since this morning. On triage, the patient appears lethargic but maintains normal perfusion, blood pressure, and heart rate for his age. Abdominal examination demonstrates a non-distended, soft abdomen with no signs of peritonitis. Arrange the following steps in the most appropriate sequential order for the evaluation and management of this patient.

  1. 1Discontinue enteral feeds, insert a nasogastric tube, and administer intravenous fluids
  2. 2Obtain a plain anteroposterior and lateral abdominal radiograph
  3. 3Perform an upper gastrointestinal contrast series with fluoroscopy
  4. 4Proceed with an exploratory laparotomy and Ladd procedure

Answer

The correct sequence for managing neonatal bilious emesis is: 1) initial stabilization and gastric decompression with a nasogastric tube and IV fluids, 2) a plain abdominal radiograph to rule out perforation, 3) an upper gastrointestinal contrast series to diagnose malrotation, and 4) surgical intervention (Ladd procedure).
The diagnostic algorithm for a hemodynamically stable neonate presenting with bilious emesis prioritizes stabilization and preventing aspiration, followed by ruling out life-threatening perforation, diagnosing the specific obstructive cause, and finally performing therapeutic intervention. Therefore, the correct sequence is placing a nasogastric tube and providing IV fluids, followed by a plain abdominal radiograph, then an upper GI contrast series, and finally a surgical Ladd procedure.

Step-by-Step Solution

1
Stabilize the patient and decompress the stomach.
Discontinuation of feeds, insertion of a nasogastric tube, and initiation of IV fluids.
Prevents aspiration of emesis and provides necessary hemodynamic support for a potentially critically ill neonate.
2
Rule out bowel perforation.
Obtaining a plain anteroposterior and lateral abdominal radiograph.
Identifies free intraperitoneal air (pneumoperitoneum), which would strongly contraindicate contrast imaging and necessitate immediate surgery.
3
Confirm the diagnosis of malrotation/volvulus.
Performing an upper gastrointestinal contrast series.
It is the gold standard imaging study to accurately evaluate the position of the ligament of Treitz when plain films are inconclusive.
4
Definitive therapeutic management.
Exploratory laparotomy and Ladd procedure.
Corrects the underlying malrotation, untwists any existing volvulus, and removes the risk of subsequent bowel necrosis.

Key Concept

The management of neonatal bilious emesis follows a strict diagnostic algorithm: stabilize with NPO status/NG tube/IV fluids, rule out perforation with a plain abdominal radiograph, diagnose malrotation with an upper GI contrast series, and definitively treat with surgery.
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