A hiatal hernia occurs when a portion of the stomach pushes upward through an opening in the diaphragm called the hiatus and enters the chest cavity. The diaphragm is a muscle that separates the chest from the abdomen and plays an important role in breathing.
Normally, the esophagus passes through the hiatus before connecting to the stomach. In a hiatal hernia, the upper part of the stomach moves through this opening, which can contribute to acid reflux and other digestive symptoms.
Many people with a hiatal hernia may not experience any symptoms, while others can develop significant discomfort and complications if left untreated.
What Causes a Hiatal Hernia?
A hiatal hernia develops when the muscles and tissues around the diaphragm weaken, allowing the stomach to move upward.
Common causes and risk factors include:
- Increasing age
- Obesity
- Pregnancy
- Chronic coughing
- Heavy lifting
- Straining during bowel movements
- Repeated vomiting
- Previous abdominal injury or surgery
- Increased pressure inside the abdomen
In many cases, the exact cause may not be known.
Types of Hiatal Hernia
1. Sliding Hiatal Hernia
This is the most common type.
In a sliding hiatal hernia, the junction between the esophagus and stomach slides upward through the diaphragm into the chest.
Most hiatal hernias belong to this category.
2. Paraesophageal Hiatal Hernia
This is less common but can be more serious.
Part of the stomach pushes through the diaphragm and remains beside the esophagus. In severe cases, the blood supply to the stomach can become compromised, requiring urgent medical attention.
Symptoms of a Hiatal Hernia
Many people have no symptoms at all.
When symptoms occur, they are usually related to acid reflux and may include:
- Heartburn
- Acid reflux
- Sour taste in the mouth
- Chest discomfort
- Difficulty swallowing
- Frequent burping
- Bloating after meals
- Feeling full quickly
- Chronic cough
- Hoarseness of voice
- Sore throat
Symptoms often worsen after eating large meals or lying down shortly after eating.
Can a Hiatal Hernia Cause Acid Reflux?
Yes.
A hiatal hernia can weaken the natural valve between the esophagus and stomach, allowing stomach acid to flow backward into the food pipe.
This can lead to:
- Gastroesophageal Reflux Disease (GERD)
- Chronic heartburn
- Esophagitis (inflammation of the esophagus)
- Difficulty swallowing
Many patients who suffer from persistent acid reflux are found to have an underlying hiatal hernia.
How Is a Hiatal Hernia Diagnosed?
Doctors may recommend one or more of the following tests:
Upper GI Endoscopy
An endoscope is used to examine the esophagus, stomach, and upper digestive tract.
Barium Swallow Study
The patient drinks a contrast liquid, and X-rays are taken to visualize the esophagus and stomach.
CT Scan
A CT scan may help evaluate large or complicated hiatal hernias.
Esophageal Manometry
This test measures the pressure and function of the esophagus.
How Is a Hiatal Hernia Treated?
Treatment depends on the severity of symptoms.
Lifestyle Changes
Mild cases can often be managed by:
- Eating smaller meals
- Avoiding late-night meals
- Losing excess weight
- Avoiding spicy and fatty foods
- Limiting caffeine and alcohol
- Elevating the head of the bed
- Avoiding lying down immediately after eating
Medications
Doctors may prescribe:
- Antacids
- H2 blockers
- Proton Pump Inhibitors (PPIs)
These medications help reduce acid production and relieve reflux symptoms.
When Is Surgery Needed?
Surgery may be recommended when:
- Symptoms persist despite medications
- Severe GERD affects quality of life
- There is difficulty swallowing
- The hernia becomes large
- A paraesophageal hernia is present
- Complications develop
Laparoscopic Hiatal Hernia Surgery
Modern hiatal hernia repair is commonly performed using laparoscopic (keyhole) surgery.
Benefits include:
- Smaller incisions
- Less pain
- Faster recovery
- Shorter hospital stay
- Earlier return to normal activities
During surgery, the stomach is returned to its normal position, the diaphragmatic opening is repaired, and an anti-reflux procedure may be performed if necessary.
What Happens If a Hiatal Hernia Is Left Untreated?
Untreated hiatal hernias may lead to:
- Persistent acid reflux
- Esophageal ulcers
- Narrowing of the esophagus
- Bleeding
- Barrett’s esophagus
- Strangulation of the stomach (rare but serious)
Early evaluation helps prevent these complications.
When Should You See a Surgeon?
Consult a surgeon if you experience:
- Frequent heartburn
- Persistent acid reflux
- Difficulty swallowing
- Chest discomfort after meals
- Chronic cough associated with reflux
- Symptoms that do not improve with medication
Prompt diagnosis can help determine whether medical treatment or surgery is the best option.
Conclusion
A hiatal hernia occurs when part of the stomach moves through the diaphragm into the chest cavity. While many people have no symptoms, others may experience troublesome acid reflux, heartburn, and swallowing difficulties.
Fortunately, most cases can be managed with lifestyle changes and medications, while advanced cases can be effectively treated with minimally invasive laparoscopic surgery. If you have persistent reflux symptoms, seeking medical evaluation can help prevent long-term complications.