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Blocked stomach outlet (gastric outlet obstruction or volvulus)

Also called: Gastric outlet obstruction, gastric volvulus

Blockage or twisting at the stomach outlet causing vomiting of undigested food and belly swelling.

EmergencyTwisting

Overview

Ulcers, scarring, or tumors can narrow the stomach outlet. Volvulus is when the stomach twists.

Symptoms

Common signs:

  • Repeated vomiting
  • Swollen upper belly
  • Can't keep anything down
  • Feeling full after a few bites, or vomiting old food

Less common

  • Weight loss

When to get medical care

Call 911Call 911 now for: repeated vomiting, swollen upper belly, can't keep anything down.
Get care todayMilder symptoms that could be early signs.
See a doctor soonQuestions about lowering your risk.

Causes

Ulcers, tumors, twisting.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.

Diagnosis

This is diagnosed in the emergency room or hospital.

The exam

A physical exam.

Tests

Tests, if needed:

  • CT:

Treatment

Emergency care is needed. While waiting for help:

Self-care

  • Go to the ER
  • Don't eat until checked
  • Eat small meals

Prevention

To lower your risk or prevent problems:

  • Treat ulcers

Which doctor treats this

  • Emergency doctors treat it first, in the ER.
  • They may send you to a gastroenterologist (stomach and gut doctor).

Back to school, work, or sports

  • Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.

Children, pregnancy, and older adults

  • Older adults: Higher risk.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

For caregivers

  • Go to visits when you can and take notes.
  • Keep a list of medicines, allergies, and doctors in one place.
  • Learn the warning signs that need fast care.
  • Learn CPR. Many hospitals and the Red Cross offer classes.
  • Take breaks and ask for help. Caregivers need care too.

Outlook

Treatment opens the blockage.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What follow-up care do I need?
  • How can I prevent this from happening again?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Blocked stomach outlet (gastric outlet obstruction or volvulus)

Sources

Last updated 2026-11-12.