Ileus (patient information)
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Maheep Singh Sangha, M.B.B.S.
Overview
Intestinal obstruction is a partial or complete blockage of the bowel that prevents the contents of the intestine from passing through.
What are the symptoms?
- Abdominal swelling (distention)
- Abdominal fullness, gas
- Abdominal pain and cramping
- Breath odor
- Constipation
- Diarrhea
- Inability to pass gas
- Vomiting
Diagnosis
During a physical exam, the health care provider may find bloating, tenderness, or hernias in the abdomen.
Tests that show obstruction include:
- Abdominal CT scan
- Abdominal x-ray
- Barium enema
- Upper GI and small bowel series
Treatment
Treatment involves placing a tube through the nose into the stomach or intestine to help relieve abdominal swelling (distention) and vomiting. Volvulus of the large bowel may be treated by passing a tube into the rectum.
Surgery may be needed to relieve the obstruction if the tube does not relieve the symptoms, or if there are signs of tissue death.
What to expect (Outlook/Prognosis)?
The outcome depends on the cause of the blockage. Most of the time the cause is easily treated.
Possible complications
Complications may include or may lead to:
- Electrolyte (blood chemical and mineral) imbalances
- Dehydration
- Hole (perforation) in the intestine
- Infection
- Jaundice (yellowing of the skin and eyes)
If the obstruction blocks the blood supply to the intestine, it may cause infection and tissue death (gangrene). Risks for tissue death are related to the cause of the blockage and how long it has been present. Hernias, volvulus, and intussusception carry a higher gangrene risk.
In a newborn, paralytic ileus that destroys the bowel wall (necrotizing enterocolitis) is life-threatening and may lead to blood and lung infections.
When to seek urgent medical care?
Call your health care provider if you:
- Cannot pass stool or gas
- Have a swollen abdomen (distention) that does not go away
- Keep vomiting
Prevention
Prevention depends on the cause. Treating conditions, such as tumors and hernias, that can lead to obstruction may reduce your risk of getting an obstruction.
Some causes of obstruction cannot be prevented.