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Objective: To compare the effect of intrauterine contraceptive device and combined application of intrauterine support balloon in the treatment of intrauterine adhesion. Methods: A total of 96 patients who underwent hysteroscopic moderate and severe hysterectomy at the First Affiliated Hospital of Xi'an Jiaotong University from December 2016 to August 2019 were selected and randomized table method was used to divide them into two groups. In the control group, 48 cases was placed with intrauterine contraceptive device after operation, and 48 cases in the study group was replaced with an intrauterine contraceptive device after 3~5 days after the intrauterine support balloon was placed. The two groups were given artificial cycle treatment for 3 months after operation. Hysteroscopy was performed one month after the operation to check whether the uterine cavity was re-adhered and the intrauterine device was removed to evaluate whether the operation was effective. Follow-up of menstrual cramps at 3 months after surgery. Statistics were used to compare the amount of vaginal bleeding, C-reactive protein levels, fever, lower abdominal pain, and IUD or support balloon fall-off within 5 days after operation. The surgical effect at 1 month after operation and the menstrual recovery at 3 months after operation were compared between the two groups. Results: The operation efficiency of the research group was significantly higher than that of the control group (P<0.05), the number of menstrual improvement was significantly more than the control group (P<0.05), and the amount of vaginal bleeding within 5 days after surgery was significantly less than that of the control group (P<0.05). There was no difference in C-reactive protein level and fever rate between the two groups (P>0.05). The occurrence of lower abdominal pain and balloon exfoliation in the study group was significantly lower than that in the control group (P<0.05). Conclusion: Compared with the use of IUD alone, the combined use of uterine cavity support balloons after moderate and severe intrauterine adhesions can improve the efficiency of surgery, improve menstruation, reduce postoperative bleeding, and not increase the risk of infection, but the balloon Easily falls off and increases pain in the lower abdomen. [ABSTRACT FROM AUTHOR]

Chemical key laboratory is a special chemical laboratory, it is characterized by complex personnel, big personnel mobility and more expensive large instruments, so the safety management is much difficult. This paper focuses on the safety management of chemical key laboratory, including the safety of chemicals, the safety of instruments and the safety of water and electricity. Combining with the situation of key laboratory where the authors work, the paper proposes specific measurements of safety management from four aspects: safety consciousness, security system, hardware construction and software management. [ABSTRACT FROM AUTHOR]