Neonatal gastro-oesophageal reflux and aspiration — short-answer question

Part A — Diagnosis and classification (10 marks)

a) Define gastro-oesophageal reflux and distinguish it from GORD (4 marks)

Gastro-oesophageal reflux is the effortless retrograde passage of gastric contents into the oesophagus, with or without regurgitation. In neonates it is almost always physiologic. GORD is reflux that causes complications — failure to thrive, haematemesis, oesophagitis, recurrent aspiration, or distress — and the distinction rests entirely on the presence of these complications. [1]

b) List the red flags that indicate this is NOT simple physiologic reflux (6 marks)

The red flags that shift the picture from physiologic reflux to GORD or to a surgical and metabolic mimic include bilious or green vomiting, forceful or projectile vomiting, failure to thrive, visible blood in the vomit or anaemia, persistent irritability or arching suggestive of pain, and recurrent respiratory events indicating aspiration. [1]

Bilious vomiting is the cardinal danger sign because it signals intestinal obstruction, most dangerously malrotation with volvulus, and it demands urgent contrast imaging and surgical review rather than anti-reflux therapy. [1]

Part B — Management and evidence (10 marks)

a) Outline the stepwise management for this infant (6 marks)

Begin with confirmation that this is physiologic reflux: the infant is thriving on the 10th centile and has no red flags, so the first step is reassurance that reflux is normal, expected, and self-limiting. [3]

The conservative measures are the foundation: smaller and more frequent feeds reduce gastric distension, upright positioning after feeds and careful burping aid gastric emptying, and a pacifier stimulates swallowing and may reduce reflux episodes in preterm infants. [3]

Feed modification is the next step in the unit-based preterm infant: review the tube position and consider switching bolus to continuous tube feeds, which demonstrably reduces the reflux burden on impedance monitoring. If symptoms persist and are troublesome, a short alginate trial is the only drug with reasonable short-term evidence in infants, and the response should be reassessed. [3]

b) What is the evidence for and against acid suppression, and how does it apply to the reflux-apnoea link? (4 marks)

A 2023 Cochrane review found no convincing evidence that proton-pump inhibitors improve reflux symptoms in infants, and systematic reviews conclude their efficacy for infant GORD is unproven. Acid suppression is reserved for proven GORD or oesophagitis, not for physiologic reflux. [2]

Proton-pump inhibitors in infants carry real harm — gastroenteritis and respiratory infection, a signal toward necrotising enterocolitis in preterm infants, and a small fracture risk with prolonged use — none of which buys benefit in physiologic reflux. The temporal association between reflux and apnoea on a monitor is almost always coincidence, and neither thickening nor acid suppression reduces reflux-related apnoea, so the correct response is to investigate the apnoea's cause rather than suppress acid. [2] [3]