Diagnoses and Treatments

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Bile Reflux

Bile Reflux

What is bile reflux? Bile reflux occurs when the bile that’s released into your small intestine to help digest food washes back into your stomach, and sometimes into your esophagus. Normally, everything involved in the digestive process should only flow one way ⁠— down. As food progresses along the digestive tract, valves at the end of each organ open just enough to let food and digestive juices through into the next, without letting anything flow back the other way. But if these valves (sphincters) aren’t functioning right, reflux can happen, and digestive juices like bile can flow back into organs where they don’t belong.

How does bile reflux occur? Bile is produced in your liver, stored in your gallbladder and released into your small intestine when there are fats there to digest. The pyloric valve lets food out of your stomach and into your small intestine, where it mixes with bile. If the pyloric valve is too relaxed, or maybe obstructed, it doesn’t close properly, and bile can flow back into your stomach.

What is the difference between bile reflux and acid reflux? If the valve that lets food into your stomach from your esophagus — the lower esophageal sphincter — doesn't close properly, stomach juices can wash back into your esophagus. This is commonly known as acid reflux. But if you have bile reflux, those juices may contain bile, too. Sometimes, bile is the bigger problem irritating your esophagus.

How does bile reflux affect my body?

Bile is composed of ingredients designed to digest fat. While it isn’t an acidic formula, it’s harsh on the sensitive linings of your stomach and esophagus. Chronic bile reflux can erode these protective linings, causing painful inflammation and, eventually, tissue damage (esophagitis). You’ll feel it as a burning kind of stomach ache, heartburn or sore throat, or as regurgitation of stomach contents into your esophagus. You may also have frequent nausea, indigestion or even bile vomit.

 

What are the possible complications of bile reflux?

Chronic inflammation of your stomach lining (gastritis) can lead to stomach ulcers and is associated with a higher risk of stomach cancer. Inflammation of your esophagus (esophagitis) can cause ulcers, scarring and cellular changes to your lining (Barrett’s Esophagus), which is occasionally a precursor to esophageal cancer. These risks are also associated with chronic gastroesophageal acid reflux (GERD), but studies show that bile reflux multiplies the risk.

 

How common is bile reflux?

Bile reflux is not thought to be common in otherwise healthy individuals. However, acid reflux is very common, and some cases of acid reflux may also be bile reflux. Symptoms of bile reflux and acid reflux are practically identical, and doctors can’t tell if you’re regurgitating bile without actually sampling and analyzing the fluid you regurgitate. This is considered unnecessary when diagnosing acid reflux. But if you’ve been treated for acid reflux and still have symptoms, you might be a candidate for further testing.

 

Who does bile reflux affect?

Bile reflux is most commonly recognized as a complication of surgery, particularly stomach surgery that bypasses, damages or replaces the pyloric valve. Gallbladder removal surgery (cholecystectomy) may also be associated with bile reflux. When your gallbladder is removed, your liver is redirected to release bile directly into your small intestine. But when bile isn’t stored and concentrated in the gallbladder first, it can overflow into your stomach.

 

What are the symptoms of bile reflux (non-acid reflux)?

If you have bile reflux in your stomach, you may notice:

 

Abdominal pain.

Regurgitation.

Indigestion.

Nausea.

Yellow-green vomit.

If you have bile reflux in your esophagus, you may notice:

 

Heartburn.

Regurgitation.

Sore throat and hoarseness.

Yellow-green vomit.

How can I tell if I have acid reflux or bile reflux?

Symptoms of acid reflux and bile reflux in your esophagus are virtually the same. If your symptoms include vomit, check the color. Bile has a tell-tale yellow tint. If you also have symptoms of bile reflux in your stomach, such as abdominal pain and indigestion, that might be an important clue.

 

In general, acid reflux is considered more common and more likely than bile reflux. But if medications to treat acid reflux don’t relieve your symptoms, let your healthcare provider know. They can test the reflux fluid in your esophagus to detect the presence of bile.

 

What causes bile reflux?

Bile reflux is most commonly caused by a problem with the pyloric valve that’s supposed to keep bile from escaping into your stomach. This might be a result of:

 

Surgery, especially stomach surgery and gallbladder removal surgery.

Obstruction of the pyloric valve by a duodenal ulcer or scar tissue.

Impaired motility, delaying the functioning of the pyloric valve and the downward flow of bile.

 

How is bile reflux diagnosed?

Bile reflux will usually involve abdominal symptoms and sometimes esophagus symptoms. While reflux into your esophagus is easy to diagnose based on your symptoms alone, reflux into your stomach will need to be confirmed by imaging tests. Your healthcare provider will probably order an upper endoscopy exam to look inside of your esophagus, stomach and upper small intestine. The endoscope can take tissue samples while it takes images, to test for inflammation, tissue damage and the presence of bile. For reflux into your esophagus, they may take additional tests to distinguish acid reflux from bile reflux.

 

What tests are used to diagnose bile reflux?

Upper endoscopy exam. This involves placing a tube with a tiny camera attached down your throat and into your stomach and small intestine. You’ll have numbing and relaxing medication for the exam. The endoscope can also take tissue samples to analyze in the lab.

HIDA scan. Also known as scintigraphy, the hepatobiliary iminodiacetic acid (HIDA) scan is a radiographic imaging test that tracks the flow of bile from your liver to your small intestine. This test requires you to lie inside a scanner bed for one to four hours.

Bilitec monitoring system. This test detects bile content in esophageal reflux through a photo-colorimetric device.

Esophageal impedance test. This test can confirm reflux into your esophagus and measure whether the content is acidic or non-acidic. For the test, a small catheter is placed in your esophagus through your nasal cavity. You’ll have medication to numb and relax your throat. The catheter stays in place for 24 hours. During this time, it measures and reflux episodes, the reflux content and notes any symptoms that result. This is a reliable test for differentiating between acid and non-acid reflux.

 

How is bile reflux treated?

Healthcare providers prescribe a variety of medications to treat bile reflux and its symptoms, but these have not been well studied. You’ll have to see if they work for you. When they don’t work, and your symptoms remain severe, your healthcare provider may recommend surgery.

 

Medications to treat bile reflux include:

 

Ursodeoxycholic acid (UDCA), which changes the content of bile in your stomach.

Bile acid sequestrants, which bind and disrupt the circulation of bile.

Sucralfate, which coats and protects the lining of your stomach and esophagus.

Prokinetic agents to encourage motility between your stomach and small intestine.

Baclofen, a medication that decreases the relaxation of your lower esophageal sphincter.

Surgical interventions to treat bile reflux include:

 

Diversion surgery to direct bile away from the stomach.

Anti-reflux surgery to strengthen and reinforce the lower esophageal sphincter.

Can I treat bile reflux at home?

Unlike acid reflux, bile reflux can’t be treated with over-the-counter antacids or diet changes. Bile reflux is difficult to treat even with prescription medications. Sometimes, surgery is necessary. However, some small lifestyle adjustments, including raising the head of your bed, losing some excess weight and eating dinner earlier, may help ease your symptoms a little.

 

What happens if bile reflux is left untreated?

Prolonged exposure to bile can damage the linings of your stomach and esophagus. This can result in chronic inflammation, pain, and side effects such as ulcers.

 

What is the outlook for those with bile reflux?

Treating bile reflux can be challenging, but healthcare providers have a few things up their sleeve that you can try. If medications don’t work, and your symptoms are severe, surgery may be a solution.

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