Objective: To investigate the status of abnormal menstruation in female nurses in a comprehensive hospital in Beijing, China and related influencing factors. Methods: In July 2016, a cross-sectional survey was performed, and a self-administered questionnaire was used to investigate the status of menstruation and occupation in female nurses in a comprehensive hospital in Beijing. The chi-square test and a multivariate logistic regression analysis were used for statistical analysis. Results: A total of 892 female nurses were investigated, and among them, 485 experienced abnormal menstruation within the past three months, resulting in an abnormal menstruation rate of 54.37%. The female nurses who were exposed to harmful factors during work, negative life events, or high workload had a significantly higher abnormal menstruation rate than those who were not exposed to such factors (χ²=5.199, 16.186, and 10.227, P<0.05 or P<0.01) . Negative life events (odds ratio [OR]=1.813, 95% confidence interval[CI]: 1.317-2.496) and high workload (OR=1.461, 95%CI: 1.112-1.918) were risk factors for abnormal menstruation. Conclusion Nurses have an abnormal menstruation rate as high as 54.37%, and high workload and negative life events were risk factors for abnormal menstruation in nurses.

Objective: To investigate the application of Symptom Checklist-90 (SCL-90) in Chinese nurses. Methods: We performed a literature search for articles in Chinese on the mental health of nurses investigated using the SCL-90 that were published from January 2007 to December 2016. A total of 129 articles were included, involving 178 groups of valid samples as well as 36316 subjects in 27 provinces or cities in China. The metafor package of R 3.2.1 software and Excel were used for meta-analysis and data statistics. Results: Heterogeneity was identified for the nine factors included in the literature data (Q test: P<0.05; I² test >40%) , so a random effects model was used. For all factors except interpersonal relationship factor, the 95% confidence intervals of the pooled effect sizes did not include 0. For all factors except interpersonal relationship factor (Egger test: P<0.05) , no significant asymmetry or incompleteness appeared in the funnel plots. The fail-safe number of each factor was much larger than 5k+10. The merger scores and mean values of nine factors were higher than the national norm. Conclusion The SCL-90 is widely used in the study of mental status of Chinese nurses, but the SCL-90 norm for nurses is lacking.

Objective To investigate the application of liver three-dimensional (3D) visualized reconstruction technique in hepatectomy for children with complicated hepatoblastoma. Methods A retrospective analysis was performed for the clinical data of 30 children with hepatoblastoma who underwent hepatectomy for radical resection in PLA Rocket Force Characteristic Medical Center from January 2018 to October 2020, and according to whether liver 3D visualization with IQQA-Liver system was performed before surgery, the children were divided into 3D reconstruction group with 15 children and control group with 15 children. The two groups were compared in terms of perioperative parameters, short-term prognosis, and follow-up conditions. The independent samples t -test was used for comparison of normally distributed continuous data between two groups, and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups; the Fisher's exact test was used for comparison of categorical data between two groups. Results Compared with the control group, the 3D reconstruction group had a significantly higher mean age (55.7±10.2 years vs 28.2±2.7 years, P < 0.05) and a significantly higher number of patients with POSTTEXT stage III/VI hepatoblastoma (12 vs 5, P < 0.05) or involvement of the hepatic vein or the inferior vena cava (11 vs 3, P < 0.05). All children completed the surgery successfully, and there were no significant differences between the two groups in blood loss, time of operation, number of times and duration of hepatic portal occlusion, and number of children receiving segmental hepatectomy or partial hepatectomy (all P > 0.05). The median follow-up after surgery was 9.5 months. In the 3D reconstruction group, 2 children experienced recurrence and were diagnosed at 10 and 12 months, respectively, after surgery, and they were treated with chemotherapy at the moment; in the control group, 4 children experienced recurrence, which was higher than that in the 3D reconstruction group ( P =0.651), and among these 4 children, 2 had recurrence at 7 months after surgery, received liver transplantation, and survived up to now, and the other 2 children died shortly after recurrence. Conclusion 3D visualized reconstruction technique helps to perform hepatectomy for children with complicated hepatoblastoma more safely and accurately, especially extended hepatectomy for patients with stage POST TEXT III/IV hepatoblastoma, thereby avoiding liver transplantation.