Upper gastrointestinal bleeding epidemiology and demographics: Difference between revisions
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==Epidemiology and Demographics== | ==Epidemiology and Demographics== | ||
About 75% of patients presenting to the emergency room with GI bleeding have an upper source {{ref|1}}. The diagnosis is easier when the patient has hematemesis. In the absence of hematemesis, 40% to 50% of patients in the emergency room with GI bleeding have an upper source{{ref|2}} {{ref|3}} {{ref|4}}. Determining whether a patient truly has an upper GI bleed versus [[lower gastrointestinal bleeding]] is difficult. | About 75% of patients presenting to the emergency room with GI bleeding have an upper source {{ref|1}}. The diagnosis is easier when the patient has hematemesis. In the absence of hematemesis, 40% to 50% of patients in the emergency room with GI bleeding have an upper source{{ref|2}} {{ref|3}} {{ref|4}}. Determining whether a patient truly has an upper GI bleed versus [[lower gastrointestinal bleeding]] is difficult. | ||
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Revision as of 17:27, 7 February 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Epidemiology and Demographics
About 75% of patients presenting to the emergency room with GI bleeding have an upper source [2]. The diagnosis is easier when the patient has hematemesis. In the absence of hematemesis, 40% to 50% of patients in the emergency room with GI bleeding have an upper source[3] [4] [5]. Determining whether a patient truly has an upper GI bleed versus lower gastrointestinal bleeding is difficult.
Whiting studied a cohort of 325 patients and found the odds ratios for the strongest predictors were: black stool, 16.6 (95% confidence interval [CI], 7.7-35.7); age < 50 years, 8.4 (95% CI, 3.2-22.1); and blood urea nitrogen/creatinine ratio 30 or more, 10.0 (95% CI, 4.0-25.6)[6] . Seven (5%) of 151 with none of these factors had an upper GI tract bleed, versus 63 (93%) of 68 with 2 or 3 factors. Ernst found similar results[7].