Bowel Obstruction: Symptoms, Causes, and Emergency Treatment

Bowel obstruction happens when your intestines are blocked, stopping food and fluids from passing through. It’s a serious condition that can cause intense pain, vomiting, and swelling. Immediate medical care is essential to prevent complications like tissue death or infection. Treatment may involve fasting, IV fluids, medications, or surgery.

In plain words

A bowel obstruction is a blockage in the intestines that stops food and liquids from moving through. It is a serious problem that needs quick medical help. The blockage can happen in the small or large intestine. It causes painful cramps, swelling in the belly, and you may throw up. You might not be able to pass gas or have a bowel movement. This can lead to worse problems like infections or damage to your intestines if not treated fast. Doctors can help with medicines, fluids through a vein, or sometimes surgery to remove the blockage.

What is Bowel Obstruction: Symptoms, Causes, and Emergency Treatment?

Bowel obstruction happens when your intestines are blocked, stopping food and fluids from passing through. It’s a serious condition that can cause intense pain, vomiting, and swelling. Immediate medical care is essential to prevent complications like tissue death or infection. Treatment may involve fasting, IV fluids, medications, or surgery.

Symptoms

Early symptoms

  • Cramping abdominal pain: Pain that comes and goes in waves, often felt in the abdomen. It may start suddenly or build gradually. (1) (2)
  • Bloating: A feeling of fullness or swelling in the abdomen, often accompanied by discomfort. (1) (3)
  • Nausea: A feeling of queasiness or the urge to vomit, even if vomiting doesn’t occur. (1) (2)
  • Loss of appetite: A reduced desire to eat, often due to abdominal discomfort or nausea. (1) (2)
  • Inability to pass gas: Feeling like you can’t burp or pass gas, often accompanied by bloating. (1) (3)
  • Inability to have a bowel movement: Constipation or the complete inability to pass stool, even with effort. (1) (2)

Serious or emergency symptoms

  • Intense abdominal pain: Severe, unrelenting pain that doesn’t go away, often a sign of a complete blockage. Seek emergency medical care immediately. (1) (2)
  • Vomiting (sometimes fecal): Severe vomiting that may include stomach contents or fecal matter, indicating a complete obstruction. Call emergency services right away. (1) (3)
  • Visible abdominal swelling: The abdomen appears distended or swollen, often with tenderness. Immediate medical attention is required. (1) (2)
  • Signs of dehydration: Dry mouth, dizziness, and reduced urination, which can occur if vomiting prevents fluid intake. Seek urgent medical care. (2) (3)

Causes

Primary causes

  • Scar tissue from surgery: Previous abdominal surgeries can cause scar tissue (adhesions) that twist or block the intestines. (2)
  • Hernias: A hernia occurs when part of the intestine pushes through a weak spot in the abdominal wall, causing a blockage. (2)
  • Tumors: Tumors in the intestines or nearby organs can grow and block the passage of food and fluids. (2)
  • Inflammatory bowel disease: Conditions like Crohn’s disease can cause inflammation and narrowing of the intestines, leading to blockages. (2)

Risk factors

Previous abdominal surgery

Scar tissue from past surgeries can increase the risk of bowel obstruction. (2)

Crohn’s disease

Chronic inflammation from Crohn’s disease can narrow the intestines, raising the risk of blockages. (2)

Cancer

Tumors in the abdomen or intestines can physically block the passage of food and fluids. (2)

Age (older adults)

Older adults are at higher risk due to changes in digestive function and increased likelihood of hernias or tumors. (2)

Diagnosis

A doctor will diagnose bowel obstruction through a physical exam and imaging tests, such as X-rays or CT scans. They may also order blood tests to check for dehydration or infection. A detailed medical history, including symptoms and any past surgeries, helps confirm the diagnosis.

Physical exam

To check for abdominal tenderness, swelling, or visible signs of blockage. (2) (5)

X-rays

To identify signs of blockage, such as gas or fluid buildup in the intestines. (2) (5)

CT scan

To get detailed images of the intestines and locate the exact site of the blockage. (2) (5)

Blood tests

To check for dehydration, infection, or electrolyte imbalances caused by vomiting or dehydration. (2) (5)

Treatment

Medication options

Antiemetics

These medications reduce nausea and vomiting, helping you feel more comfortable. (6) (7)

Pain relievers

These medications can ease abdominal pain while waiting for further treatment. (6) (7)

IV fluids

IV fluids prevent dehydration and restore electrolyte balance if vomiting prevents fluid intake. (6) (7)

Lifestyle and self-care

  • Fasting: Avoiding food and drink temporarily reduces stress on the intestines and helps prevent further complications. (6) (7)
  • Nasogastric tube placement: A tube inserted through the nose into the stomach helps relieve pressure and remove excess fluids or gas. (6) (7)
  • Follow-up care: After treatment, regular check-ups help monitor recovery and prevent future obstructions. (6) (7)
  • Managing underlying conditions: Treating conditions like Crohn’s disease or hernias can reduce the risk of future blockages. (6) (7)

Always discuss dosing and treatment changes with your own prescriber.

Possible complications

  • Tissue death: If the blockage cuts off blood flow to the intestines, tissue can die, leading to severe complications. (6) (3)
  • Perforation: Pressure from the blockage can cause the intestine to tear, leaking digestive contents into the abdomen. (6) (3)
  • Infection: Perforation or tissue death can lead to serious infections like peritonitis. (6) (3)
  • Dehydration: Severe vomiting and inability to eat or drink can lead to dehydration and electrolyte imbalances. (6) (3)

When to see a doctor

Routine follow-up

  • If you experience persistent abdominal pain, bloating, or difficulty passing stool, contact your doctor for an evaluation. (1) (2)

Seek emergency care

  • Seek emergency care immediately if you have severe abdominal pain, vomiting, or an inability to pass gas or stool. (1) (4)
  • Call emergency services if you notice signs of dehydration, such as dizziness or reduced urination, alongside abdominal symptoms. (2) (3)

Frequently asked questions

Is Bowel Obstruction an emergency?

Yes, bowel obstruction is a medical emergency. A complete blockage can lead to tissue death, perforation, or infection if not treated promptly. Seek immediate medical care if you suspect a bowel obstruction. (1) (2)

What are the warning signs of Bowel Obstruction?

Warning signs include severe abdominal pain, bloating, vomiting, and an inability to pass gas or stool. These symptoms require urgent medical attention. (1) (3)

What should I do if Bowel Obstruction happens?

Seek emergency medical care immediately. Do not eat or drink until evaluated by a doctor. Treatment may include IV fluids, medications, or surgery. (1) (6)

How quickly do I need help for Bowel Obstruction?

You should seek help immediately if you experience severe symptoms like unrelenting abdominal pain, vomiting, or the inability to pass stool or gas. Delaying treatment can lead to serious complications. (1) (2)

What happens at the hospital for Bowel Obstruction?

At the hospital, doctors will assess your symptoms, perform imaging tests like X-rays or CT scans, and may administer IV fluids or medications. Severe cases may require surgery to remove the blockage. (1) (5)

References

  1. NHS — Bowel obstruction source 1
  2. Mayo Clinic — Intestinal obstruction source 2
  3. MedlinePlus — Intestinal obstruction source 3
  4. NHS — When to get medical help source 4
  5. Mayo Clinic — Intestinal obstruction - Diagnosis & treatment source 5
  6. MedlinePlus — Intestinal obstruction source 6
  7. NHS — Treatment for bowel obstruction source 7