米非司酮联合米索前列醇在稽留流产中的治疗效果

目的：探讨米非司酮联合米索前列醇在稽留流产中的治疗效果。方法：将80例稽留流产患者随机分为观察组和对照组，每组40例，对照组采用乙烯雌酚，观察组采用米非司酮联合米索前列醇，用药后两组均常规行清宫术。比较两组的宫颈软化程度、清宫时间、出血量、人工流产综合征的发生率。结果：观察组的宫颈充分软化率高于对照组，完全流产率高于对照组，清宫时间、出血量、人工流产综合征的发生率，差异有统计学意义（P〈0．05）。两组患者的不良反应无统计学意义（P〉O．05）。结论：米非司酮联合米索前列醇能够提高过期流产患者一次清宫成功率，减少出血量和人工流产综合征，值得推广。

Evolution of the vortex structures and turbulent spots at the late-stage of transitional boundary layers

The nonlinear evolution process of new vortex structures at the late-stage of the transition, including the 3-D spatial structure of barrel-shaped vortex and "dark spots" structure observed by experiment research, has been confirmed by our computational results. The formation mechanisms of these structures have been explored. It is revealed that the new vortex structures, the ring-like vortex chain and induced disturbance velocities play a dominant role in the generation of turbulent spots.