Medical Health Encyclopedia

Note: Some evidence suggests that in patients who are taking them, proton-pump inhibitors (PPIs) should be discontinued two weeks before an endoscopy. Their use may mask ulcers.

Capsule Endoscopy.Capsule endoscopy involves swallowing a capsule the size of a large vitamin, which contains tiny camera, light source, and a radio transmitter. The device takes and records pictures as it passes through the intestinal tract. At this point, its benefits are limited to the small intestine, so it is unlikely to play a role in the diagnosis of peptic or gastric ulcers. However, it has the potential to be an important tool for the diagnosis of obscure upper GI bleeding. Patients who have used it have usually found it painless and preferable to conventional endoscopy.

Upper GI Series

The upper GI (gastrointestinal) series was the standard diagnostic method for peptic ulcers until the introduction of adequate tests for detecting H. pylori. The patient drinks a solution containing barium. Then x-rays are taken, which may reveal inflammation, active ulcer craters, or deformities and scarring due to previous ulcers. Endoscopy is more accurate, although more invasive and expensive.

Click the icon to see an illustrated series detailing treatment of gastrointestinal (GI) bleeding.

Other Laboratory Tests

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Stool tests may show traces of blood that are not visible, and blood tests may reveal anemia in those who have bleeding ulcers. If Zollinger-Ellison syndrome is suspected, blood levels of gastrin should be measured.