Yes, they knock you out.
My Experience
* The procedure was done by the my lap-band doctor.
* You are asked to wear a hospital gown, remove your eyeglasses and dentures.
* A mouthpiece is placed in your mouth. It does not interfere with your breathing.
* You will lie on your left side during the procedure.
* A local anesthetic and a sedative intravenously (in your vein). You will feel relaxed and drowsy off to sleep.
* The doctor inserts an endoscope into your mouth, through your esophagus (the "food pipe" leading from your mouth into your stomach) and into your stomach. The endoscope does not interfere with your breathing.
* The procedure was about 15 to 20 minutes.
After the procedure
* You will stay in a recovery room for about 30 minutes for observation.
* You may feel a temporary soreness in your throat but I didn't at all.
* Your doctor will discuss the results with you after the procedure.
* A responsible adult must accompany you home. Do not drive or make any major decisions for at least 8 hours after the procedure.