单项选择题

患者男性，46岁，诊断为“上消化道出血”收住院。治疗后提示出血停止的征象是

A.血尿素氮升高
B.外周血中红细胞比积下降
C.外周血中血红蛋白量下降
D.外周血中网织红细胞计数减少
E.肠鸣音亢进

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