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Lower Gastrointestinal Endoscopic Ultrasonography


A lower gastrointestinal endoscopic ultrasound is used to help diagnose and treat diseases that affect the lower gastrointestinal (GI) tract. The lower GI tract includes some parts of the small intestine, the colon, and the rectum.


Before your procedure:

  • Informed consent is a legal document that explains the tests, treatments, or procedures that you may need. Informed consent means you understand what will be done and can make decisions about what you want. You give your permission when you sign the consent form. You can have someone sign this form for you if you are not able to sign it. You have the right to understand your medical care in words you know. Before you sign the consent form, understand the risks and benefits of what will be done. Make sure all your questions are answered.
  • An IV is a small tube placed in your vein that is used to give you medicine or liquids.

During your procedure:

  • You will be asked to lie on your left side and will need to raise one or both knees toward your chest. Your healthcare provider will examine your anus and use a finger to perform a digital rectal exam to check your rectum.
  • The echoendoscope will be lubricated and gently placed into your anus. It will then be passed through the rectum and into the large intestine. The passage of the scope may cause a feeling of pressure and some discomfort. Your healthcare provider will slowly advance the scope while he watches its movement on a small video screen. He will also take pictures. Your healthcare provider may take tissue samples and send them to a lab for tests. He may also treat any known conditions you have.

After your procedure:

  • You will be taken to a room to rest until you are fully awake. You will be monitored closely for any problems. Do not get out of bed until your healthcare provider says it is okay. You will then be able to go home or be taken to your hospital room.
  • Stool softeners make it easier for you to have a bowel movement. You may need this medicine to treat or prevent constipation.


You may have bleeding, an abnormal heartbeat, high blood pressure, or trouble breathing. Your small intestines, large intestines, or rectum may get injured because of increased pressure from the scope.


You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your caregivers to decide what care you want to receive. You always have the right to refuse treatment.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.