Acute lower GI tract bleeding is a common reason for hospitalization, with an estimated annual incidence of 20 to 35 per 100 000 persons.1 Although lower GI tract bleeding typically implies a bleeding source originating from the colon or rectum, up to 15% of patients with presumed lower GI tract bleeding may have an upper GI tract bleeding source.2 Although colonoscopy is commonly used as a diagnostic test and potentially therapeutic procedure, it is unclear whether early use of colonoscopy is associated with improved clinical outcomes.3
Sengupta N, Cifu AS. Management of Patients With Acute Lower Gastrointestinal Tract Bleeding. JAMA. 2018;320(1):86–87. doi:10.1001/jama.2018.5684
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