Prassler R, Barnert J, Reitz B, Behr W, Wienbeck M
III. Medizinische Klinik, Zentralklinikum Augsburg.
Leber Magen Darm. 1994 May;24(3):118-21.
The urea/creatinine-ratio has been proposed as an instrument for differentiating upper from lower gastrointestinal haemorrhages. The predictability of this method was investigated in 105 cases with the source of bleeding to be in the upper gastrointestinal tract and in 31 cases in the lower gastrointestinal tract. Determination of the urea/creatinine-ratio predicted the site of bleeding in only 60% of the patients. The use of the ratio in diagnostic decision making would increase the number of unnecessary colonoscopies. Thus, the urea/creatinine-ratio does not appear to be clinically useful in predicting the localization of a gastrointestinal bleeding with adequate certainty.
尿素/肌酐比值已被提议作为区分上消化道出血和下消化道出血的一种手段。在105例出血源在上消化道的病例和31例出血源在下消化道的病例中，对该方法的可预测性进行了研究。尿素/肌酐比值的测定仅在60%的患者中预测了出血部位。在诊断决策中使用该比值会增加不必要的结肠镜检查次数。因此，尿素/肌酐比值在确定胃肠道出血部位方面似乎没有足够的临床实用性。
