halo procedureEGD with ablation


The Halo procedure uses heat energy (radiofrequency ablation) combined with EGD (esophagogastroduodenoscopy). The heat from electrodes at either end of the hollow tube (endoscope) used in the procedure destroys abnormal tissue in the esophagus. The heat is exact and doesn’t damage healthy tissue. 

This procedure is recommended to treat Barrett’s esophagus by destroying abnormal tissue in the esophagus to prevent the condition from getting worse.

what to expect

The preparation for a Halo procedure, which is done in an outpatient setting, is similar to preparing for EGD. Before the procedure, you may be asked not to eat or to drink only clear liquids. You also might need to avoid certain medications, or you may need to clean out your colon like you would do for a colonoscopy.

You’ll be sedated with medication given through a needle in your arm (intravenously, or IV). Any discomfort should be minor. Your doctor may numb your throat with a spray before placing the tube (endoscope) in your mouth. Using the heat from the electrodes on the endoscope, your doctor removes the thin layer of diseased tissue from your esophagus. A camera on the endoscope transmits pictures to computer screens. If you have a large area of diseased tissue, it may be treated with a balloon filled with electrodes that enters your esophagus through the endoscope.


The ablation itself takes about 30 minutes, but the entire procedure takes longer. Your doctor can tell you how long you can expect the procedure to last. You are monitored for an hour or two afterward, then someone can drive you home. You can usually return to normal activities the next day. You might notice heartburn, a sore throat or abdominal bloating for a day or two, and you should eat soft foods for a week afterward. You’ll usually need at least three Halo treatments for the full results.

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