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目的：探讨Nb：YAG激光在纤维内窥镜直视下治疗胃溃疡出血的临床疗效，及其与病变大小和激光治疗方案的可能关系。方法：选择胃溃疡出血患者53例，按病灶大小分成二组，病灶直径小于1cm组和病灶直径大于1cm组。两组病例分析按随机原则接受二种激光治疗方案。方案1以50W功率激光直接照射出血灶止血，方案2以40W功率先照射出血灶周围浅露血管，再以50W功率照射出血灶止血。结果：病灶直径小于1cm的胃溃疡出血患者按方案1和方案2治疗的有效率分别为93．3巩和88.2％，病灶直径大于1cm的患者按方案1和方案2治疗的有效率分别为72.7％和90％。结论则Nd：YAG激光治疗溃疡出血疗效显著，其有效率与病变范围大小和治疗方案有一定关系。
OBJECTIVE: To investigate the clinical efficacy of Nb: YAG laser in the treatment of gastric ulcer bleeding under direct vision with fiber endoscope and its possible relationship with lesion size and laser treatment regimen. Methods: Fifty-three patients with gastric ulcer bleeding were divided into two groups according to the lesion size. The lesion diameter was less than 1 cm and the lesion diameter was greater than 1 cm. Two groups of patients according to the principle of random two types of laser treatment options. Program 1 to 50W power laser hemostasis directly to the hemorrhage, the program 2 to 40W power irradiation first peripheral blood vessels around the shallow exposed blood vessels, and then to 50W power bleeding hemostasis. Results: The effective rates of patients with gastric ulcer with lesion diameter less than 1cm were 93.3% and 88.2%, respectively. The effective rates of patients with lesion diameters> 1cm under the regimens 1 and 2 were respectively 72.7% % And 90%. Conclusion Nd: YAG laser treatment of ulcer bleeding significant effect, the effective rate and the size of the lesion and treatment programs have a certain relationship.