血尿素与肌素的比例,以区分上下胃肠道出血:系统性审查和元分析
Daniel Martin Simadibrata1, Thai Hau Koo2, Murlidhar Murlidhar3
1Department of Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA.
Journal of gastroenterology and hepatology
|January 19, 2026
概括
血尿素与肌素的比率 (BUN/Cr) 可以帮助区分上部胃肠道 (GI) 出血和下部胃肠道出血. 22的BUN/Cr值显示出在识别出血源时的中等准确性.
科学领域:
- 胃肠病学 胃肠病学
- 诊断的准确性 诊断的准确性
- 生物标志物 生物标志物
背景情况:
- 确定胃肠道 (GI) 出血的位置对于有效的患者管理至关重要.
- 目前的诊断方法,如泛内镜,可能是资源密集的.
- 血尿素与肌素的比率 (BUN/Cr) 是一个潜在的生物标志物,可以区分上部肠道出血 (UGIB) 和下部肠道出血 (LGIB).
研究的目的:
- 评估BUN/Cr比的诊断性能,以区分UGIB和LGIB.
- 评估BUN/Cr的准确性,作为一种具有成本效益的胃肠道出血分类工具.
主要方法:
- 在主要数据库 (MEDLINE,EMBASE,Cochrane图书馆) 进行了系统的文献搜索,截至2025年1月31日.
- 包括了诊断测试准确性研究,比较UGIB患者的BUN/Cr与LGIB患者.
- 使用线性混合效应模型进行了一项元分析,以聚合灵敏度,特异性和AUC.
主要成果:
- 在分析中包括了17项研究.
- 在UGIB和LGIB之间,BUN/Cr的综合平均差异为11.44.
- 在BUN/Cr值为22时,聚合灵敏度为66.2%,特异性为71.0%,AUC为0.740.
结论:
- BUN/Cr比率在区分UGIB和LGIB方面表现出适度的准确性.
- 对于这种差异化,BUN/Cr值≥22似乎是最佳的.
- 这种可访问和廉价的血液测试可以帮助早期临床评估肠道出血的位置.
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