Overview
The hiatus hernia is one of the most misunderstood and maligned conditions in medicine. People blame this hernia for much more than it ever does. Patients with a hiatus hernia need to understand what it is and what might occur with it. Most importantly, they need to know it is unusual for serious problems to develop from this type of hernia
Anatomy
The diaphragm is a sheet of muscle that separates the lungs from the abdomen. When a person takes a deep breath, the dome-shaped diaphragm contracts and flattens. In doing this, the diaphragm pulls air into the lungs. The left diaphragm contains a small hole through which passes the tube-shaped esophagus that carries food and liquid to the stomach. Normally this hole, called a hiatus, is small and fits snugly around the esophagus. The J-shaped stomach sits below the diaphragm.
What Causes a Hiatus Hernia ?
In some people, the hiatus or hole in the diaphragm weakens and enlarges. It is not known why this occurs. It may be due to heredity, while in others it may be caused by obesity, exercises such as weightlifting, or straining at stool. Whatever the cause, a portion of the stomach herniates, or moves up, into the chest cavity through this enlarged hole. A hiatus hernia is now present. Hiatus hernias are very common, occuring in up to 60 percent of people by age 60.
What Are the Different Types of Hiatus Hernia ?
- Sliding Hiatus Hernia : - In this most common type of hiatus hernia, the herniated portion of the stomach slides back and forth, into and out of the chest. These hernias are normally small and usually cause no problems or even symptoms.
- Fixed Hiatus Hernia : - In this case, the upper part of the stomach is caught up in the chest. Even with this hernia, there may be few symptoms. However, the potential for problems in the esophagus is increased.
- Complicated or Serious Hiatus Hernia : - Fortunately, this type of hernia is uncommon. It includes a variety of patterns of herniation of the stomach, including cases in which the entire stomach moves up in the chest. There is a high likelihood that medical problems will occur with this hernia and that treatment, frequently involving surgery, will be required. Complicated hernias are uncommon.
Symptoms
In most patients, hiatus hernias cause no symptoms. This is especially true of sliding hernias. When symptoms occur, they may only be heartburn and regurgitation, when stomach acid refluxes back into the esophagus. Some patients with fixed hiatus hernias experience chronic reflux of acid into the esophagus, which may cause injury and bleeding. Anemia, or low red blood cell count, can result.
Further, chronic inflammation of the lower esophagus may produce scarring and narrowing in this area. This, in turn, makes swallowing difficult, and food does not pass easily into the stomach.
Complications
The complications of hiatus hernia are : -
- Chronic heartburn and inflammation of the lower esophagus, called reflux esophagitis
- Anemia due to chronic bleeding from the lower esophagus
- Scarring and narrowing of the lower esophagus causing difficulty in swallowing
- While sleeping, stomach secretions can seep up the esophagus and into the lungs causing chronic cough, wheezing, and even pneumonia
Treatment
Treatment is called for only when the hernia results in symptoms, such as persistent heartburn or difficulty in swallowing. Acid inflammation and ulceration of the lower esophagus also require treatment.
General guidelines for treating heartburn and esophagitis (inflammation of the esophagus) are : -
- Avoid (or use only in moderation) foods and substances that increase reflux of acid into the esophagus, such as : -
- nicotine (cigarettes)
- caffeine
- chocolate
- fatty foods
- alcohol
- spearmint
- Eat smaller, more frequent meals and do not eat within 2-3 hours of bedtime.
- Avoid bending, stooping, abdominal exercises, tight belts, and girdles all of which increase abdominal pressure and cause reflux.
- If overweight, lose weight. Obesity also increases abdominal pressure.
- Prescription medications. Certain drugs, such as intestinal antispasmodics, calcium channel blockers, and some antidepressants weaken the muscle strength of the lower espohagus.
- Elevate the head of the bed 8 to 10 inches by putting pillows or a wedge under the upper part of the mattress. Gravity then helps keep stomach acid out of the esophagus while sleeping.
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