Is NG Aspiration Sensitive and Specific to Detect Upper GI Bleeding?
Nasogastric aspiration or lavage is a commonly used diagnostic test to evaluate for upper GI bleeding in patients with melena or hematochezia. Blood in the nasogastric aspirate provides information on the location and activity of the bleed. Despite its common utilization, the test has limited sensitivity and is very uncomfortable for patients. This article reviews the usefulness, diagnostic accuracy, and prognostic ability of NGA/NGL in the evaluation of acute gastrointestinal bleeding.
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