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8550 Datapoint Dr. Suite 200, San Antonio, TX

Gastroenterology Clinic of San Antonio

EGG: Electrogastrogram

The EGG is a measure of the stomachs electrical activity. The EGG is like an EKS of the stomach.

What preparation is required?
The patient should eat or drink nothing after midnight. Two hours prior to the EGG procedure time, the patient should eat 2 pieces of dry toast and drink 6 oz of apple juice. Any pro or anti- motility medications (see below) must be stopped 3-4 days prior to the scheduled EGG. Dress comfortably with the ability to expose the abdomen.

List of drugs the patient must stop 72 hours before the EGG procedure:

Reglan, Propulsid, Domperidone, Matilin, Bethanechol, Erythromycin
Narcotic Drugs (Codiene, Demerol, Darvocet, Morphine, Percocet, Percodan)
Calcium Channel Blockers (Procardia)
NSAIDS (Relafen, Advil, etc.)
Tricyclics (Desipramine, Amitriptyline, Imipramine Notriptyline)
Antispamotics (Dicyclomine, Hyoscyamine, Robinol, Pamine, Donnotal, etc.)
Miscellaneous (Trazodone, Buspyrinone)

List of drugs patients may continue:

H2 Blockers (Zantac, Pepcid, Tagamet, Axid)
PPIs (Prilosec, Prevacid, Aciphex, Protonix, Nexium)
(For patients with diabetes, check morning glucose level and take 50% smaller insulin dose if appropriate to do so)

On the day of the scheduled EGG, the patient is to report to the San Antonio Endoscopy Center located upstairs above the Datapoint Location at least 15-20 minutes prior to scheduled exam to register. Your Doctor’s Medical Assistant will specify which location you are to report to.

What should you expect during the procedure?
Three EKG type electrodes will be placed on your abdomen. A 15-minute recording will be made. You will be asked to drink water until you are full. Then, 30 more minutes of EGG is recorded. After the EGG, you may resume your medications and activities. Your doctor will receive a report within 10 working days.

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