Hiatal Hernia – Causes, Symptoms and Treatment
A hiatal hernia occurs when part of the stomach pushes up through the diaphragm into the chest cavity. It can cause heartburn, acid reflux, and digestive discomfort.
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A hiatal hernia occurs when part of the stomach pushes up through the diaphragm into the chest cavity. It can cause heartburn, acid reflux, and digestive discomfort.
What Is a Hiatal Hernia?
A hiatal hernia occurs when a portion of the stomach protrudes upward through the esophageal hiatus – a natural opening in the diaphragm through which the esophagus passes – into the chest cavity. Under normal circumstances, the stomach remains entirely below the diaphragm. When the surrounding tissue weakens or the hiatus widens, part of the stomach can slip upward.
Hiatal hernias are common, particularly in people over the age of 50. Many individuals experience no symptoms at all, while others suffer from significant discomfort related to gastroesophageal reflux disease (GERD).
Types of Hiatal Hernia
- Sliding hiatal hernia (Type I): The most common type. The gastroesophageal junction and part of the stomach slide up into the chest. This type is most closely associated with acid reflux.
- Paraesophageal hernia (Type II): Part of the stomach fundus herniates beside the esophagus while the gastroesophageal junction remains in place. Less common but potentially more serious.
- Mixed types (Type III and IV): Combinations of the above, sometimes involving other abdominal organs entering the chest cavity.
Causes and Risk Factors
The exact cause of a hiatal hernia is not always identifiable. Contributing factors include:
- Age-related weakening of the connective tissue and muscles around the hiatus
- Increased intra-abdominal pressure from obesity, pregnancy, chronic coughing, or constipation
- Heavy lifting or straining
- Genetic predisposition
- Previous abdominal surgery or injury
Symptoms
Small hiatal hernias often cause no symptoms. Larger hernias or those associated with acid reflux may produce:
- Heartburn, especially after eating or when lying down
- Acid regurgitation
- Chest pain or pressure behind the breastbone
- Difficulty swallowing (dysphagia)
- Nausea
- Chronic cough or hoarseness caused by reflux
Diagnosis
A hiatal hernia is diagnosed using several methods:
- Upper endoscopy (esophagogastroduodenoscopy, EGD): Direct visualization of the esophagus, gastroesophageal junction, and stomach using a flexible endoscope.
- Barium swallow X-ray: The patient swallows a contrast liquid and X-ray images are taken to visualize the esophagus and stomach.
- Esophageal pH monitoring and manometry: Measurement of acid levels in the esophagus and assessment of esophageal muscle function and pressure.
- CT scan: Used in complex cases to provide detailed anatomical information.
Treatment
Lifestyle and Conservative Measures
For mild to moderate symptoms, conservative approaches are usually tried first:
- Weight loss in overweight individuals
- Eating smaller, more frequent meals
- Avoiding trigger foods such as fatty meals, alcohol, caffeine, and tobacco
- Elevating the head of the bed while sleeping
- Avoiding tight-fitting clothing around the abdomen
Medication
Medications commonly used to relieve reflux symptoms include:
- Proton pump inhibitors (PPIs) such as omeprazole or pantoprazole – reduce stomach acid production
- H2-receptor blockers – also reduce acid secretion
- Antacids – provide short-term neutralization of stomach acid
Surgical Treatment
Surgery is recommended for large, symptomatic, or paraesophageal hernias and in cases of complications such as gastric volvulus or incarceration. The most common procedure is laparoscopic fundoplication, in which the stomach is returned to the abdominal cavity, the hiatus is repaired, and the upper part of the stomach is wrapped around the lower esophagus to reinforce the lower esophageal sphincter.
Complications
If left untreated or when severe, hiatal hernias can lead to:
- Reflux esophagitis: Inflammation of the esophageal lining due to repeated acid exposure
- Barrett's esophagus: Abnormal changes in esophageal lining cells, a risk factor for esophageal cancer
- Gastrointestinal bleeding from mucosal lesions
- Gastric incarceration: A rare but serious medical emergency requiring urgent surgery
References
- Kahrilas P.J. - Hiatus hernia. In: UpToDate, Wolters Kluwer, 2023.
- Kohn G.P. et al. - Guidelines for the Management of Hiatal Hernia. Surgical Endoscopy, 2013; 27(12): 4409-4428.
- Nissen R., Rossetti M. - Surgery of the Hiatal Hernia and Gastroesophageal Reflux. World Journal of Surgery, 1977; 1(4): 525-531.
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Related search terms: Hiatal Hernia + Hiatus Hernia + Hiatal Hernias + Diaphragmatic Hernia