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血清尿素浓度升高是消化道出血的一个较易识别的特征,其升高程度与血容量丧失程度相关。机制尚不清楚。有人曾提出因吸收过量氨基酸所导致肝异化作用增强的假说。如果这个假说成立,那么影响吸收面积的下消化道出血将不能使血清尿素浓度升高。这点差别对消化道出血部位的鉴定是否有临床价值,作者进行了探讨。对近五年来收治的59例显性消化道出血的病例作了研究。这些病人最初定位不清,经过以后的全面检查方明确诊断。结果证明
Elevated serum urea concentration is a more identifiable feature of gastrointestinal bleeding, the degree of increase associated with the degree of loss of blood volume. The mechanism is not clear. Hypothesis that liver cirrhosis is enhanced by absorption of excess amino acids has been proposed. If this hypothesis holds, the lower GI bleeding that affects the area of absorption will not result in an elevated serum urea concentration. This difference in the identification of gastrointestinal bleeding if there is clinical value, the authors discussed. In the past five years, 59 cases of dominant gastrointestinal bleeding were studied. Initial positioning of these patients is not clear, after a comprehensive examination of the parties clear diagnosis. Results prove