Abstract
Lower gastrointestinal bleeding (LGIB) is both common and morbid, with a mortality rate ranging from 1.5-4%. Use of computed tomography angiography (CTA) in localizing LGIB has replaced tagged red blood cell scans in many institutions but little data exists to guide the choice of first-line testing. Current guidelines suggest colonoscopy as standard of care based on limited supporting data. We aimed to compare the utility and yield of early CTA versus colonoscopy in lower gastrointestinal hemorrhage.
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