The physician orders a patient with a duodenal ulcer to take a UREA breath test. Which lab value will the test measure to determine if
H. Pylori is present?
Ammonia
Hydrochloric Acid
Potassium
Carbon Dioxide
The Correct Answer is D
Choice A rationale
The UREA breath test does not measure ammonia levels. While H. pylori can convert urea to ammonia and carbon dioxide, the test specifically measures the level of carbon dioxide in the breath.
Choice B rationale
The UREA breath test does not measure hydrochloric acid. Hydrochloric acid is produced by the stomach to aid in digestion, but it is not measured in the UREA breath test.
Choice C rationale
The UREA breath test does not measure potassium. Potassium is an important electrolyte in the body, but it is not related to the presence of H. pylori or the UREA breath test.
Choice D rationale
The UREA breath test measures carbon dioxide in the breath.
H. pylori bacteria break down urea into ammonia and carbon dioxide. Excess carbon dioxide in the breath is a sign of an H. pylori infection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
While it’s important to prepare for a barium swallow test, maintaining a clear liquid diet 24 hours before the test is not typically required.
Choice B rationale
Drinking plenty of fluids after the test is indeed a correct instruction. The barium used in the test can cause constipation or impacted stool if it does not pass out of the body. Drinking ample fluids helps flush the contrast from the gastrointestinal system.
Choice C rationale
While it’s true that the stool may be discolored after a barium swallow test, it’s more likely to be lighter or white, not black.
Choice D rationale
The barium swallow test does not involve the injection of any dye that would cause a warm feeling. This sensation is more commonly associated with the injection of contrast dye in other types of imaging tests, not a barium swallow.
Correct Answer is B
Explanation
Choice A rationale
Surgery to increase mucus will not heal the ulcerations. Peptic ulcers are caused by an imbalance between the digestive fluids hydrochloric acid and pepsin, and the body’s ability to protect itself from these substances. The stomach and the duodenum have some protection from these acids, but if this protection is decreased, or the production of acids and pepsin is increased, an ulcer can form.
Choice B rationale
A common cause of peptic ulcer disease is an infection from Helicobacter pylori (H. pylori).
H. pylori is a bacterium that can damage the protective lining of your stomach and small intestine. This can lead to inflammation and ulcers.
Choice C rationale
Gastric ulcers do not occur more frequently than peptic ulcers. In fact, peptic ulcers include both gastric ulcers, which form on the lining of the stomach, and duodenal ulcers, which form on the lining of the upper part of the small intestine.
Choice D rationale
Erosion is not confined to the stomach and esophagus in peptic ulcer disease. Peptic ulcers can occur in the stomach and the duodenum, and less commonly, the lower esophagus.
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