内窥镜及其治疗技术的出现使严重出血 得到早期诊断及治疗,使死亡率降低 Early and accurate diagnosis of patients with severe bleeding can facilitate therapeutic maneuvers leading to lower mortality rates. This trend appears to have occurred with the use of therapeutic endoscopic techniques内窥镜及其治疗技术的出现使严重出血 得到早期诊断及治疗，使死亡率降低。 Early and accurate diagnosis of patients with severe bleeding can facilitate therapeutic maneuvers, leading to lower mortality rates.This trend appears to have occurred with the use of therapeutic endoscopic techniques