Hiatal Hernia

Two types of hiatal hernia exist, but only one can strangulate and become a surgical emergency. Knowing which changes your entire assessment priority.

A hiatal hernia occurs when part of the stomach protrudes upward through the esophageal hiatus of the diaphragm into the thoracic cavity. There are two types, and the distinction drives management. A sliding (Type I) hernia accounts for roughly 95% of cases — the gastroesophageal junction and a portion of the fundus slide upward. Symptoms mimic GERD: heartburn worsening after meals and when lying flat. A paraesophageal (rolling, Type II) hernia is the dangerous one — the fundus rolls up beside the esophagus while the GE junction stays in place. This creates a risk of incarceration and strangulation, presenting with sudden severe chest or epigastric pain, dysphagia, and inability to vomit. Strangulation is a surgical emergency. Diagnosis is confirmed by barium swallow or upper endoscopy. Nursing assessment focuses on positioning: elevate the HOB at least 30 degrees, encourage small frequent meals, and instruct the patient to avoid lying down for 2–3 hours after eating. Obesity, pregnancy, heavy lifting, and chronic coughing are key risk factors that increase intra-abdominal pressure. Surgical repair (Nissen fundoplication) wraps the fundus around the lower esophagus to reinforce the sphincter — post-op teaching belongs in the gastric surgery sibling atom.

Key Distinctions

Don't confuse sliding hernia (GE junction moves up, reflux symptoms, managed conservatively) with paraesophageal hernia (GE junction stays put, fundus rolls up, risk of strangulation requiring surgery). Students mistake hiatal hernia chest pain for cardiac pain — a barium swallow differentiates the hernia, but an ECG is still obtained first to rule out cardiac causes. Hiatal hernia is the structural defect; GERD is the functional consequence — they overlap but are not the same diagnosis.

Clinical Pearl

Sliding slides and refluxes — annoying. Rolling rolls and strangulates — dangerous. If the patient suddenly can't vomit and has severe pain, think rolling hernia emergency.