What is Intestinal Obstruction? Ultimate Guide to Deal with Bowel Obstruction!

Medically reviewed by Aaron L Weigmann MD., MS Plastic Surgeon October 28, 2024| Written by Zenda Nel

What is Intestinal Obstruction? Ultimate Guide to Deal with Bowel Obstruction!

An intestinal obstruction is a partial or complete blockage in the small or large intestine that prevents the normal flow of contents through the intestines. With partial obstruction, some liquid content and gas can pass through the narrowed parts of the intestine, but with complete obstruction, nothing can pass through.

The small and large intestines move digested and digesting food from the stomach to eventually through the rectum. An obstruction along this route can stop this movement and cause partially digested food, gas, and other matter to dam up behind the blockage, with potentially dangerous results. 

The condition can be treated and the danger can be averted but you have to be alert to the signs and symptoms and act on them.

What are the Symptoms of Bowel Obstruction?

Intestinal obstructions are serious – you just know something is afoot when you experience some of the following symptoms: 

  • Acute abdominal pain. In the case of small bowel obstruction, the pain is in the upper abdomen; in large bowel obstruction, the pain is generally in the lower abdomen.
  • Vomiting – mostly a sign of small bowel obstruction, particularly if the vomitus is dark and foul-smelling
  • Nausea 
  • Cramps that come and go
  • Distention (bloating) of the abdomen
  • Diarrhea 
  • Constipation – mostly a sign of large bowel obstruction
  • Trouble passing gas 
  • Noisy abdomen
  • Persistently feeling full even after eating a small portion

Is Intestinal Bowel Obstruction the same as Intestinal Stenosis?

No, the two conditions are related but they are not the same. Intestinal bowel obstruction causes a complete or partial blockage, preventing the normal flow of food, fluids, and gas through the intestine.

Intestinal stenosis is the narrowing of the inside space of the intestine, resulting from factors such as scar tissue, a birth defect, or inflammation such as that caused by Crohn’s disease. The flow of contents is not blocked, it's just limited. However, intestinal stenosis can lead to a bowel obstruction.

What is the Most Common Cause of Intestinal Obstruction?

There are three main causes of intestinal obstruction –90% of cases are the result of adhesions (scar tissue), hernias, and tumors. 

Of these, adhesion accounts for most (55–75%) of the cases. Adhesions are bands of scar tissue that can form between organs and tissues in the body after an operation or as a result of infection, or inflammation.

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Other causes include volvulus (twisting of the intestine), diverticular disease, widespread cancer, endometriosis, and inflammatory bowel disease.

How to Diagnose Bowel Obstruction? 

Intestinal obstruction is not a condition that a layperson can accurately diagnose at home by interpreting symptoms. So, only a qualified medical professional can properly diagnose you.

Apart from a thorough physical examination, the following diagnostic tools are necessary to confirm the presence of an obstruction.

  • An X-ray
  • A CT scan (computed tomography) 
  • A CT scan with contrast (CT enterography)
  • A barium enema

Can Intestinal Blockage Clear Itself?

Generally, partial bowel obstructions can but complete obstructions cannot. 

In other words, people with complete bowel obstructions require immediate medical intervention or surgery. However, people with partial bowel obstructions can be stabilized with appropriate treatments such as fasting, fluid therapy, and medications. 

Partial obstructions don't normally require surgery but there are some cases where surgical procedures are needed. 

How to Clear a Blocked Bowel?

There are surgical and non-surgical treatments for intestinal obstruction. These may include: 

  • Intravenous (IV) fluids: In case of a partial obstruction, dehydration is a real danger. The doctor will call for IV fluids and electrolytes to treat the dehydration. This step, combined with a bowel rest may be enough to treat the condition. In case of a bowel rest, you may drink some clear liquids instead of eating something solid. 
  • Nasogastric tube: Most partial blockages can get better with the aid of a nasogastric (NG) tube inserted through the nose down into the stomach. The tube is then used to unblock the bowels by removing fluids and gas.
  • Medications: In case of severe constipation, doctors may prescribe laxatives and stool softeners. They may also prescribe painkillers, and medicines to prevent nausea and vomiting. 
  • Bowel rest: Bowel rest involves not eating to give the intestine time to clear the obstruction and recover from the swelling. Instead, you'll be given a nutrient-dense liquid to drink.
  • Stent: A doctor may use stents (hollow tubes) to treat the symptoms of bowel obstruction. The stent lifts the affected area of the colon so fluids and food can pass through. During a colonoscopy procedure, the doctor guides the stent to the affected area in the colon. Once there, the tube expands, increasing the diameter of the intestine.
  • Surgery: Bowel obstruction surgery is done for a completely blocked intestine. The operation will remove the obstruction plus any parts of the bowel that were damaged. The surgery will repair any hernia or remove any tumors that may have caused the blockage. 

Sometimes patients may need acolostomy or ileostomy. This procedure involves taking out the damaged part of the intestine, sewing the healthy part to an opening in the body, and attaching a disposable bag for the collection of waste matter.

How to Manage Intestinal Obstruction?

Most bowel obstructions are treated in the hospital but you can take action to manage the condition. Here are a few things that you can do:

1. What Foods to Eat for Intestinal Obstruction?

Under normal circumstances, a diet high in fiber is essential for gut health. But if your intestine is blocked or narrowed, a diet low in fiber is best. In Particular, insoluble fiber should be avoided. Insoluble fiber is the tough part of plants that doesn't break down completely during digestion. 

In addition, a low-fiber diet reduces the amount of waste that's produced, and thus how often it's necessary to pass a stool. 

People with intestinal obstruction may be better off following a low-fiber diet consisting of the following foods:

  • Meat, dairy, and eggs are safe to eat because they contain no fiber
  • Bread and baked goods made with white flour, such as bagels, biscuits, bread, and crackers
  • Plain yogurt without any fruit or granola
  • White rice and pasta 
  • Low-fiber, pre-cooked cereals such as Cheerios®, Corn Flakes®, and Cream of Wheat®
  • Grits
  • Peeled fruit with seeds or pips removed
  • Well-cooked vegetables, such as potatoes, squash, carrots, sweet potatoes, baby marrows, and beetroot - cut finely and mashed or liquidized
  • Canned peaches and pears
  • Jelly

To make it easier for food to get digested and move through the intestine, cut your food into small pieces, cook it well, chew it properly, and drink plenty of water. You can also liquidize your food for smoothies and soups.

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2. Foods to Avoid for Bowel Obstruction!

Foods high in roughage are not suitable if you have an intestinal obstruction. Avoid the following foods:

  • Seeds and nuts
  • Dried fruit
  • Whole grain flour, whole grain bread, and unrefined rice
  • Popcorn
  • Processed meats like bologna, hot dogs, salami, and sausage
  • Raw vegetables
  • Olives and pickles
  • Fibrous vegetables, such as Brussel sprouts, cabbage, cauliflower, celery, corn, legumes, okra, onions, peas, peppers, sauerkraut, Swiss chard, and tomatoes
  • Fruits with their skins

3. Lifestyle Habits for Intestinal Obstruction

In addition to following a low-fiber diet, certain lifestyle habits can help you manage the condition and reduce its impact, including:

  • Eating small meals throughout the day
  • Cooking food well
  • Limiting greasy food
  • Taking meals in a relaxed setting
  • Focusing on chewing food properly
  • Drinking plenty of water
  • Exercising regularly – consider walking or gentle yoga three or four times a week
  • Maintaining a healthy weight

A low-fiber diet is restrictive, may be poor in nutrients, and lead to constipation. To combat these factors, take care to eat a variety of low-fiber foods and drink plenty of water. Depending on how long you need to be on the diet, you may need to take a supplement. 

Consult your doctor about the best nutritional supplement.

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Can I Take Laxatives To Encourage Bowel Movements?

The use of laxatives isnot promoted for people with intestinal obstruction disorders. According to the Mayo Clinic, laxatives can bedangerous for constipation caused by a bowel blockage.

Stool softeners, which have a more gentle effect may be prescribed for some people with bowel obstruction. These medications help soften the stool, making it easier to pass. 

Don't buy over-the-counter stool softeners. Consult your doctor and take the medication exactly as prescribed. 

Should I Avoid Fiber in Bowel Obstruction?

Doctors advise a low-fiber diet for bowel obstruction. Food that contains insoluble fiber should be avoided if you have been diagnosed with bowel obstruction. Insoluble plant matter like peels, seeds, and stringy fibers cannot be digested by the body. They absorb water and make stools bulky which may be difficult to pass. 

Avoid food with high insoluble fiber content while your bowels have not completely recovered.

FAQs

Does Drinking Water Help Bowel Obstruction?

Yes, drinking water helps with bowel obstruction. Doctors advise drinking plenty of water, up toeight glasses. Drinking plenty of water can help with bowel movements and will prevent dehydration.

Is Yogurt Good for Bowel Obstruction?

Yes, yogurt is nutritious and has no fiber. If you can tolerate dairy, yogurt is a good option to include in your diet.

How to Do Bowel Rest at Home?

To give your bowels a rest, you can stop eating and only drink fluids. It is best not to do this without your doctor's input. Your doctor will advise you on what liquids to drink and may even prescribe a nutrient-dense liquid supplement to ensure you get all the nutrients you would normally get from the food you eat.

Conclusion

A bowel obstruction can be complete or partial. A complete bowel blockage requires hospitalization and can't be treated at home. It is a serious condition that needs immediate medical attention. Causes include tumors, surgical scar tissue, hernias, and tumors.

Partial blockages, on the other hand, are less severe and can clear up with proper treatment. 

To manage the condition and prevent future blockages, you can eat a low-fiber diet, drink plenty of water, and stay active. Once the condition has cleared up, it's essential to gradually introduce high-fiber foods to ensure regular bowel movements and promote digestive health.

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