No changes necessary. No changes necessary. The tube passes more easily if you relax and follow instructions about breathing and swallowing. Passing the tube through the nose into the throat and then into the stomach is uncomfortable. Discomfort from the tube ceases when the tube is withdrawn.
Discomfort disappears when the test is finished.
Equipment used Water-soluble lubricating jelly. Description of test Sit upright. A flexible, lubricated tube is passed through your nose. Bend your neck slightly forward, and swallow the tube when it advances to the back of your throat. After you swallow, the tube passes through the esophagus and stomach into the duodenum, the first segment of the small intestine.