Richards R J, Donica M B, Grayer D
Department of Gastroenterology, Bridgeport Hospital, Connecticut.
J Clin Gastroenterol. 1990 Oct;12(5):500-4. doi: 10.1097/00004836-199010000-00004.
We wanted to know if the blood urea nitrogen to creatinine (BUN/Cr) ratio could help distinguish upper from lower gastrointestinal bleeding. We analyzed retrospectively patients admitted to our hospital for gastrointestinal bleeding over the past 5 years. A total of 126 patients represented 74 upper bleeds and 52 lower bleeds. The mean BUN/Cr ratio was significantly higher in upper than lower bleeders, 34.8 and 17.8 respectively (p less than 0.001). No lower bleeder had a ratio of greater than or equal to 36, whereas 38% of upper bleeders had a ratio of greater than or equal to 36. The BUN/Cr ratio may be an easy, cheap method of distinguishing upper from lower gastrointestinal bleeding in some cases. A BUN/Cr ratio of greater than or equal to 36 suggests upper gastrointestinal bleeding, whereas a ratio of less than 36 is not helpful in locating the source of bleeding.
我们想知道血尿素氮与肌酐（BUN/Cr）比值是否有助于区分上消化道出血和下消化道出血。我们回顾性分析了过去5年因消化道出血入住我院的患者。共有126例患者，其中74例为上消化道出血，52例为下消化道出血。上消化道出血患者的平均BUN/Cr比值显著高于下消化道出血患者，分别为34.8和17.8（p<0.001）。没有下消化道出血患者的比值大于或等于36，而上消化道出血患者中有38%的比值大于或等于36。在某些情况下，BUN/Cr比值可能是一种简单、廉价的区分上消化道出血和下消化道出血的方法。BUN/Cr比值大于或等于36提示上消化道出血，而比值小于36对确定出血部位没有帮助。
