下消化道出血,几乎都是显性出血,有时需紧急处置,因而显性出血病例与普通检查程序不同。检查步骤:一般是灌肠检查,纤维内窥镜检查及对特殊病例行血管造影。我们对显性出血病人首选导管长的内窥镜检查。理由是:(1)能直接证实出血源;(2)结肠下部病变多,内窥镜易插到该处。紧急内 Lower gastrointestinal bleeding, almost all of the dominant bleeding, and sometimes need emergency treatment, and thus the case of dominant bleeding and general examination of different procedures. Inspection steps: usually enema examination, fiber endoscopy and angiography for special cases. We have endoscopy for the preferred catheter length for dominant bleeding. The reasons are: (1) can directly confirm the source of bleeding; (2) lower colon lesions, endoscope easy to plug in here. Urgent inside