Understand the Relation Between Intestinal Blockage and Crohn’s Disease

Introduction:

Crohn's disease (CD) is an inflammatory bowel disease exacerbated by genes and environmental factors. It is most commonly detected in people between 20 and 30. The underlying cause is unknown, although its frequency rapidly increases worldwide. Approximately 100 to 300 cases of Crohn's disease per 100,000 people are seen in Western Europe and North America. This disease currently affects more than half a million Americans. Crohn's disease has risen in the United States and other world regions. CD can cause various complications, with intestinal blockage(obstruction) being the most common. Studies have shown that with time, scar tissue (fibrosis) is formed in the intestines of most CD patients, which may cause intestinal obstruction. This article provides an overview of intestinal blockage caused by Crohn's disease and the management of patients with this condition.

What Is Crohn's Disease?

Crohn's disease is a form of inflammatory bowel disease (IBD). Other prevalent kinds of IBD include ulcerative colitis and microscopic colitis. The CD is a chronic disease that causes swelling of the tissues (inflammation) in the bowel (intestines), which can result in abdominal pain, severe diarrhea, tiredness, loss of weight, and nutritional deficiency. The inflammation can affect various digestive tract regions, with the small intestine being the most frequently involved. This inflammation often extends to the deeper layers of the intestine. The exact cause of Crohn's disease is still not known.

Crohn's Disease symptoms can vary from mild to severe. They typically occur gradually, yet at times, can occur suddenly, without warning. Symptoms include:

• Diarrhea.

• Fever.

• Tiredness.

• Abdominal pain and cramping.

• Blood in stool.

• Mouth sores.

• Reduced appetite and weight loss.

What Causes Intestinal Blockage in Crohn's Disease?

Crohn’s disease is a long-term inflammatory bowel disease that causes persistent inflammation. The inflammation can cause thickening and scarring of the intestinal lining. Over time, thickening causes narrowing of the intestines, making it difficult for food and other substances to move through the intestines. The narrowing of the intestines is known as intestinal stricture, and it can eventually cause intestinal blockage.

What Are the Symptoms of Intestinal Blockage?

The symptoms depend on the severity of the blockage. The intestinal blockage symptoms include:

• Abdominal cramping.

• Abdominal pain following meals.

• Nausea.

• Vomiting.

• Constipation (reduced or absence of stool).

• Abdominal bloating (due to trapped gas and fluids).

• Distension (swelling of the abdomen due to trapped fluids).

• Loss of appetite.

• Fatigue.

How Is Intestinal Blockage Diagnosed?

The tests and procedures used to detect intestinal blockage are as follows:

1. Physical Examination: A doctor will look for signs such as tenderness in the lower abdomen, distention, and bowel sounds.

2. Diagnostic Test:

• X-ray: An abdominal X-ray may be recommended by a doctor to confirm a diagnosis of bowel obstruction; however, certain intestinal obstructions are not visible on normal X-rays.

• Computed Tomography (CT) Scan: It creates cross-sectional images by combining a sequence of X-ray images obtained at various angles. These images are clearer than ordinary X-rays and more likely to reveal an intestinal obstruction.

• Barium Enema: This procedure provides better colon imaging and may address some possible causes of obstructed intestines. The doctor introduces liquid barium into the intestines through the rectum during this procedure.

What Is the Management of Intestinal Blockage?

The treatment of intestinal blockage caused by Crohn’s disease depends on the severity and cause of the bowel obstruction. It aims to relieve symptoms, reduce inflammation, and prevent complications. Treatment includes:

1. Medical Management:

Initial management of Crohn’s disease with obstruction includes nasogastric decompression and steroids.

• Nasogastric Decompression: A small tube is placed through the nose and into the stomach to drain gas and fluids to decrease pressure on bowel obstruction.

• Steroids: These are the medications that decrease the inflammation in the narrowed areas of the intestine

In around 66 percent of cases, the blockage improves with these measures. However, long-term steroid use has negative effects, so patients must switch to other drugs for maintenance. Immunomodulators or biologics are maintenance drugs that help control inflammation over a longer period. Other interventions are needed if the intestinal blockage does not improve with medical therapy.

2. TPN (Total Parenteral Nutrition) and Bowel Rest: TPN refers to administering nutrients directly into the bloodstream to give the bowel a rest. TPN is not the primary treatment of CD, but it can be helpful for support before surgery. A study showed that TPN at least 60 days before surgery significantly reduces complications.

3. Balloon Dilation: Balloon dilation, also known as stricturotomy, is the treatment for narrowing (stricture) of intestines caused by Crohn's disease. It involves putting a balloon using a thin, lighted tube called an endoscope to widen the narrowed area.

4. Intestinal Blockage Surgery: Doctors should consider two main surgical approaches for addressing intestinal blockage: laparoscopic and open surgery.

1. Laparoscopic Surgery: This is a minimally invasive surgery with small incisions and faster recovery.

2. Open Surgery: It involves larger incisions and is used for complex cases where a minimally invasive approach may not be suitable.

Depending on the severity of the stricture (narrowing), two main surgical options are:

• Resection Reanastomosis: When strictures become more severe, resection surgery may be required. This involves removing the affected portion of the intestine and reconnecting the healthy bowel ends.

• Stricturoplasty: For simple strictures, surgeons can perform a bowel-preserving operation known as strictureplasty. During this surgery, the doctor widens the stricture without removing the bowel. Stricturoplasty is often employed on the small intestine but can also treat ileocolic strictures (junction between small intestines and large intestine).

Conclusion:

Intestinal blockage is a common problem for people with Crohn’s disease, even with improved medical treatments. Treatment includes medical therapy and total parenteral nutrition. Also, Endoscopic balloon dilation, a newer technique, shows promise in alleviating symptoms of narrowed intestines. However, surgery is important for treating intestinal obstruction. Many patients can significantly relieve symptoms and maintain a better quality of life through medical and surgical interventions. Ongoing research and developments in treatment options are helping Crohn's disease patients achieve better outcomes. Early diagnosis and integrated strategies are essential for effective management of the disease.