Define Hiatus Hernia. Describe its types, management and complications.

The Concept

A hiatus hernia is the herniation of part of the stomach upward through the oesophageal hiatus of the diaphragm into the thorax. It is common, especially with increasing age and obesity, and its importance lies in its relationship to reflux and, for one type, the risk of a surgical emergency. There are two main anatomical types, which behave quite differently and must be distinguished.

The Two Types

A mixed hernia has features of both.

Features & Diagnosis

A sliding hernia typically presents with the symptoms of reflux — heartburn and regurgitation. A rolling hernia may be asymptomatic or cause a sense of fullness, but can present dramatically if it strangulates or twists (volvulus), causing severe pain, retching with inability to vomit, and obstruction. Diagnosis is by barium swallow and upper GI endoscopy (which also assesses oesophagitis).

Management

A sliding hernia is managed like GORD — lifestyle measures and PPIs, with surgery (fundoplication and hiatal repair) only for refractory disease. A rolling (para-oesophageal) hernia is generally repaired surgically, often even when asymptomatic, because of the serious risk of strangulation and volvulus.

Complications of the Rolling Hernia

The reason a rolling hernia is repaired even when asymptomatic is the danger of gastric volvulus and strangulation: the herniated fundus can twist and obstruct, cutting off its blood supply. The classic warning is Borchardt's triad — severe epigastric pain, retching without the ability to vomit, and difficulty passing a nasogastric tube — which signals a strangulating gastric volvulus needing emergency surgery.

A Note on Management

For the common sliding hernia, treatment is essentially that of reflux; surgery (laparoscopic fundoplication with reduction of the hernia and repair of the hiatus) is reserved for refractory or complicated disease. Large or para-oesophageal hernias are repaired electively where possible, before an emergency supervenes.

The Bottom Line

The examinable essence is the sliding-versus-rolling contrast: sliding hernia → reflux, treated medically; rolling (para-oesophageal) hernia → strangulation/volvulus risk (Borchardt's triad), treated by surgical repair even when asymptomatic.

Risk Factors & Clinical Relevance

Hiatus hernia becomes commoner with age, obesity and raised intra-abdominal pressure (pregnancy, chronic cough, constipation), which is why weight loss is central to management of the associated reflux. Its clinical relevance is twofold: the very common sliding hernia is important as a driver of GORD and its complications (oesophagitis, stricture, Barrett's), while the uncommon rolling hernia matters because of its potential to present as a surgical emergency — a reminder that the same anatomical label covers two quite different clinical problems.

Rolling hernias need repair for the risk, not the reflux.

• Hiatus hernia = herniation of stomach through the diaphragmatic oesophageal hiatus.
• Sliding (~90%): gastro-oesophageal junction moves up → reflux; treat like GORD (lifestyle + PPI).
• Rolling/para-oesophageal (~5%): fundus herniates, junction stays → little reflux but risk of strangulation/volvulus.
• Diagnose by barium swallow + endoscopy.
• Rolling hernia → surgical repair (often even if asymptomatic) because of strangulation risk.