GERD - Gastroesophageal reflux disease (Acid reflux)
- Category: Gastroenterology
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Gastroesophageal reflux disease (GERD) is a chronic digestive disease. GERD occurs when stomach acid or, occasionally, stomach content, flows back into your food pipe (esophagus). The backwash (reflux) irritates the lining of your esophagus and causes GERD.
Both acid reflux and heartburn are common digestive conditions that many people experience from time to time. When these signs and symptoms occur at least twice each week or interfere with your daily life, or when your doctor can see damage to your esophagus, you may be diagnosed with GERD.
Most people can manage the discomfort of GERD with lifestyle changes and over-the-counter medications. But some people with GERD may need stronger medications, or even surgery, to reduce symptoms.
Symptoms of the Gastroesophageal reflux disease
GERD signs and symptoms include:
- A burning sensation in your chest (heartburn), sometimes spreading to your throat, along with a sour taste in your mouth
- Chest pain
- Difficulty swallowing (dysphagia)
- Dry cough
- Hoarseness or sore throat
- Regurgitation of food or sour liquid (acid reflux)
- Sensation of a lump in your throat
When to see a doctor
Seek immediate medical attention if you experience chest pain, especially if you have other signs and symptoms, such as shortness of breath or jaw or arm pain. These may be signs and symptoms of a heart attack.
Make an appointment with your doctor if you experience severe or frequent GERD symptoms. If you take over-the-counter medications for heartburn more than twice a week, see your doctor.
Causes of the Gastroesophageal reflux disease
GERD is caused by frequent acid reflux — the backup of stomach acid or bile into the esophagus.
When you swallow, the lower esophageal sphincter — a circular band of muscle around the bottom part of your esophagus — relaxes to allow food and liquid to flow down into your stomach. Then it closes again.
However, if this valve relaxes abnormally or weakens, stomach acid can flow back up into your esophagus, causing frequent heartburn. Sometimes this can disrupt your daily life.
This constant backwash of acid can irritate the lining of your esophagus, causing it to become inflamed (esophagitis). Over time, the inflammation can wear away the esophageal lining, causing complications such as bleeding, esophageal narrowing or Barrett's esophagus (a precancerous condition).
Conditions that can increase your risk of GERD include:
- Bulging of top of stomach up into the diaphragm (hiatal hernia)
- Dry mouth
- Delayed stomach emptying
- Connective tissue disorders, such as scleroderma
Complications of the Gastroesophageal reflux disease
Over time, chronic inflammation in your esophagus can lead to complications, including:
- Narrowing of the esophagus (esophageal stricture). Damage to cells in the lower esophagus from acid exposure leads to formation of scar tissue. The scar tissue narrows the food pathway, causing difficulty swallowing.
- An open sore in the esophagus (esophageal ulcer). Stomach acid can severely erode tissues in the esophagus, causing an open sore to form. The esophageal ulcer may bleed, cause pain and make swallowing difficult.
- Precancerous changes to the esophagus (Barrett's esophagus). In Barrett's esophagus, the tissue lining the lower esophagus changes. These changes are associated with an increased risk of esophageal cancer. The risk of cancer is low, but your doctor will likely recommend regular endoscopy exams to look for early warning signs of esophageal cancer.
Tests and diagnosis
Diagnosis of GERD is based on:
- Your symptoms. Your doctor may be able to diagnose GERD based on frequent heartburn and other symptoms.
- A test to monitor the amount of acid in your esophagus. Ambulatory acid (pH) probe tests use a device to measure acid for 24 hours. The device identifies when, and for how long, stomach acid regurgitates into your esophagus. One type of monitor is a thin, flexible tube (catheter) that's threaded through your nose into your esophagus. The tube connects to a small computer that you wear around your waist or with a strap over your shoulder.
Another type is a clip that's placed in your esophagus during endoscopy. The probe transmits a signal, also to a small computer that you wear. After about two days, the probe falls off to be passed in your stool. Your doctor may ask that you stop taking GERD medications to prepare for this test.
- If you have GERD and you're a candidate for surgery, you may also have other tests, such as:
- An X-ray of your upper digestive system. Sometimes called a barium swallow or upper GI series, this procedure involves drinking a chalky liquid that coats and fills the inside lining of your digestive tract. Then X-rays are taken of your upper digestive tract. The coating allows your doctor to see a silhouette of your esophagus, stomach and upper intestine (duodenum).
- A flexible tube to look inside your esophagus. Endoscopy is a way to visually examine the inside of your esophagus and stomach. During endoscopy, your doctor inserts a thin, flexible tube equipped with a light and camera (endoscope) down your throat.
Your doctor may also use endoscopy to collect a sample of tissue (biopsy) for further testing. Endoscopy is useful in looking for complications of reflux, such as Barrett's esophagus.
- A test to measure the movement of the esophagus. Esophageal motility testing (manometry) measures movement and pressure in the esophagus. The test involves placing a catheter through your nose and into your esophagus.
Treatments and drugs
Treatment for heartburn and other signs and symptoms of GERD usually begins with over-the-counter medications that control acid. If you don't experience relief within a few weeks, your doctor may recommend other treatments, including medications and surgery.
Initial treatments to control heartburn
Over-the-counter treatments that may help control heartburn include:
- Antacids that neutralize stomach acid. Antacids, such as Maalox, Mylanta, Gelusil, Gaviscon, Rolaids and Tums, may provide quick relief. But antacids alone won't heal an inflamed esophagus damaged by stomach acid. Overuse of some antacids can cause side effects, such as diarrhea or constipation.
- Medications to reduce acid production. Called H-2-receptor blockers, these medications include cimetidine (Tagamet HB), famotidine (Pepcid AC), nizatidine (Axid AR) or ranitidine (Zantac). H-2-receptor blockers don't act as quickly as antacids do, but they provide longer relief and may decrease acid production from the stomach for up to 12 hours. Stronger versions of these medications are available in prescription form.
- Medications that block acid production and heal the esophagus. Proton pump inhibitors are stronger blockers of acid production than are H-2-receptor blockers and allow time for damaged esophageal tissue to heal. Over-the-counter proton pump inhibitors include lansoprazole (Prevacid 24 HR) and omeprazole (Prilosec, Zegerid OTC).
Contact your doctor if you need to take these medications for longer than two to three weeks or your symptoms are not relieved.
If heartburn persists despite initial approaches, your doctor may recommend prescription-strength medications, such as:
- Prescription-strength H-2-receptor blockers. These include prescription-strength cimetidine (Tagamet), famotidine (Pepcid), nizatidine (Axid) and ranitidine (Zantac).
-Prescription-strength proton pump inhibitors. Prescription-strength proton pump inhibitors include esomeprazole (Nexium), lansoprazole (Prevacid), omeprazole (Prilosec, Zegerid), pantoprazole (Protonix), rabeprazole (Aciphex) and dexlansoprazole (Dexilant).
These medications are generally well-tolerated, but long-term use may be associated with a slight increase in risk of bone fracture and vitamin B-12 deficiency.
- Medications to strengthen the lower esophageal sphincter. Baclofen may decrease the frequency of relaxations of the lower esophageal sphincter and therefore decrease gastroesophageal reflux. It has less of an effect than do proton pump inhibitors, but it might be used in severe reflux disease. Baclofen can be associated with significant side effects, most commonly fatigue or confusion.
GERD medications are sometimes combined to increase effectiveness.
Surgery and other procedures used if medications don't help
Most GERD can be controlled through medications. In situations where medications aren't helpful or you wish to avoid long-term medication use, your doctor may recommend more-invasive procedures, such as:
- Surgery to reinforce the lower esophageal sphincter (Nissen fundoplication). This surgery involves tightening the lower esophageal sphincter to prevent reflux by wrapping the very top of the stomach around the outside of the lower esophagus. Surgeons usually perform this surgery laparoscopically. In laparoscopic surgery, the surgeon makes three or four small incisions in the abdomen and inserts instruments, including a flexible tube with a tiny camera, through the incisions.
- Surgery to strengthen the lower esophageal sphincter (Linx). The Linx device is a ring of tiny magnetic titanium beads that is wrapped around the junction of the stomach and esophagus. The magnetic attraction between the beads is strong enough to keep the opening between the two closed to refluxing acid, but weak enough so that food can pass through it. It can be implanted using minimally invasive surgery methods. This newer device has been approved by the Food and Drug Administration and early studies with it appear promising.