A nurse has admitted a child to the hospital with a diagnosis of "rule out" peptic ulcer disease. Which test will the nurse expect to be ordered to confirm the diagnosis of a peptic ulcer?
a. A 24-hour dietary history
b. A positive Hematest result on a stool sample
c. A fiberoptic upper endoscopy
d. An abdominal ultrasound
C
Endoscopy provides direct visualization of the stomach lining and confirms the diagnosis of peptic ulcer. Dietary history may yield information suggestive of a peptic ulcer, but the diagnosis is confirmed through endoscopy. Blood in the stool indicates a gastrointestinal abnormality, but it does not conclusively confirm a diagnosis of peptic ulcer. An abdominal ultrasound is used to rule out other gastrointestinal alterations such as gallstones, tumor, or mechanical obstruction.
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