A 28-day-old male newborn with several vomiting episodes over the past 24 hours. Which examination finding would require transfer to the emergency department?

• A. Bilious Vomiting
• B. Nonbilious Vomiting
• C. Moist Oral Mucous Membranes
• D. Normal Abdominal Exam

Answer: (A)

Bilious vomiting in a newborn signals a possible intestinal obstruction distal to the stomach and is a surgical emergency. In this age, green or bilious content means the stomach has emptied into the duodenum and the problem lies further along the GI tract, where issues like malrotation with midgut volvulus, intestinal atresias, or other obstructive causes can rapidly compromise blood flow to the bowel. Waiting or assuming it’s trivial can lead to bowel necrosis or sepsis, so the safest move is immediate transfer to the emergency department for urgent stabilization, imaging, and surgical consultation.

By contrast, nonbilious vomiting in a well-hydrated infant is often related to reflux or mild feeding intolerance and is usually not as acutely dangerous if hydration is good. Moist oral mucous membranes reflect adequate hydration, and a normal abdominal exam can be reassuring, though it does not completely rule out pathology. The critical red flag here is the bilious nature of the vomiting, which is why it prompts ED transfer right away.