How you prepare

Your doctor will give you specific instructions to prepare for your EUS. You may be asked to:

  • Fast before EUS, to make sure your stomach is empty. Generally, you'll be asked to fast for at least 6 hours before the test.
  • Prepare your rectum, if EUS is being done in the rectal area. You may be asked to take a laxative or have an enema and to follow a liquid diet before the procedure.
  • Stop taking certain medications, such as blood thinners. Blood thinners may increase your risk of bleeding if fine-needle aspiration is performed during EUS. If you have chronic conditions, such as diabetes or high blood pressure, your doctor will give you specific instructions regarding your medications.
  • Plan ahead for your recovery, if you will be sedated before EUS. Most people who have EUS are given medication to relax them. Arrange for someone to drive you home after the procedure.
July 01, 2017
References
  1. Longo DL, et al., eds. Gastrointestinal endoscopy. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.com. Accessed March 5, 2017.
  2. Understanding EUS (Endoscopic ultrasound). American Society of Gastrointestinal Endoscopy. https://www.asge.org/home/for-patients/patient-information/understanding-eus. March 5, 2017.
  3. Greenberger NJ, et al., eds. Endoscopic ultrasound. In: Current Diagnosis & Treatment: Gastroenterology, Hepatology & Endoscopy. 3rd ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.mhmedical.com/content.aspx?bookid=1621§ionid=10518592. Accessed March 10, 2017.
  4. Wiersema MJ, et al. Endoscopic ultrasound-guided fine-needle aspiration biopsy in the gastrointestinal tract. http://www.uptodate.com/home. Accessed March 5, 2017.
  5. Lakhtakia S, et al. Complications of diagnostic and therapeutic endoscopic ultrasound. Best Practice & Research Clinical Gastroenterology. 2016;30:807.
  6. Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. January 9, 2017.