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[目的]探索尿素氮/血肌酐(BUN/Cr)在鉴别小肠出血部位的作用。[方法]回顾性分析58例小肠出血患者的临床资料及BUN/Cr检测结果。[结果]空肠上段出血患者的血BUN/Cr明显高于回肠下段出血患者,其中以血BUN/Cr鉴别空肠上段出血及回肠下段出血的受试者工作特征(ROC)曲线下面积(AUC)为0.715,以8.5作为鉴别空肠上段出血及回肠下段出血分界点的约登指数为0.655。[结论]运用血BUN/Cr可预测小肠出血的大体部位。
[Objective] To explore the role of urea nitrogen / serum creatinine (BUN / Cr) in differentiating small intestinal bleeding. [Methods] The clinical data and BUN / Cr test results of 58 patients with small intestinal hemorrhage were retrospectively analyzed. [Results] The blood BUN / Cr in patients with upper jejunum hemorrhage was significantly higher than that in patients with lower ileum hemorrhage. The area under the receiver operating characteristic (ROC) curve of the upper jejunum hemorrhage and lower ileum hemorrhage with blood BUN / Cr was 0.715 to 8.5 as the identification of upper jejunum hemorrhage and lower ileal hemorrhage cut-off point of the Youden index was 0.655. [Conclusion] The application of blood BUN / Cr can predict the general part of intestinal bleeding.