Objective To investigate the effects of shift-work on sleep and blood pressure in electronics workers. Methods A total of 2 496 workers were selected from 11 electronic enterprises in Wuhan City as the study subjects by typical cluster sampling method. A questionnaire survey was conducted to collect their current status of shift-work. The Pittsburgh Sleep Quality Index (PSQI) was used to measure their sleep quality in the past month. Results The prevalence of hypertension and sleep abnormality of the study subjects were 6.0% and 68.1%, respectively. The results of multiple linear regression analysis showed that the total scores of PSQI in the day-middle shift workers and day-night shift workers were higher than that in the non-shift workers (all P<0.05), and the total score of PSQI increased with the shift work age and shift work frequency (all P<0.05). The systolic blood pressure and diastolic blood pressure of the workers who worked on the day-middle shift and day-night shift were higher than those in the non-shift workers (all P<0.05), and the diastolic blood pressure increased with the shift work frequency (P<0.05). Multivariate logistic regression analysis result showed that workers on three-shift rotations, with >10 years of shift work experience, and with a shift work frequency of more than four times per month were more likely to experience abnormal sleep (all P<0.05). Different type of shift-work, shift-work age and shift-work frequency could increase the risk of hypertension in workers (all P<0.05). Conclusion Shift-work greatly affects the sleep quality of workers in the electronics industry in Wuhan City and increases the risk of hypertension.

Compassion fatigue refers to the emotional exhaustion caused by the reduction of empathy ability due to long-term stress in the process of helping others. Midwives are at high risk of compassion fatigue, which not only affects their physical and mental health, but also affects the quality of midwifery and team building. This article reviews the current situation, influencing factors and intervention measures of compassion fatigue among midwives, providing a basis for reducing the level of compassion fatigue among midwives in clinical practice.

Background The hearing of Chinese young adults is far less sensitive than 0 dB defined by international standards, with the threshold values mostly being at double digits, which is worthy of investigation. Objective To study the influencing factors of hearing threshold measurement. Methods The hearing measurements were conducted in two different ways, one was a standard method performed in a specialized audiometry experiment room, and the other one was an on-site audiometry test which included a daily examination of hearing and an onsite hearing test. From the workers who participated in the occupational health examination, 300 people were randomly selected as experimental subjects, and their hearing was measured in the hearing examination room of the Occupational Disease Prevention and Treatment Institute according to standard methods. A total of 9 766 workers from the General Motors factory were included in the daily group, and their hearing thresholds were measured in the hearing examination room in the factory. There were 4 617 people in the onsite group, and their hearing was measured in the test chamber of our mobile medical vehicle in their factories. The hearing threshold data of the three groups, i.e. experiment, daily examination and on-site, was compared and analyzed. In addition, the environmental noise in the hearing examination room and the mobile test chamber was measured. Results The hearing threshold value of the experimental group was the lowest. Despite this, its dB value remained at double digits at any frequency band. The hearing value of the daily group was in the middle. The onsite group had the highest hearing threshold, which was 58.2% higher than that of the experimental group. As the hearing data was not normally distributed, Kruskal-Wallis non-parametric test was conducted for statistical analysis. It was found that the hearing threshold difference among the three groups was statistically significant at all the frequency band (P< 0.01). The ambient noise level was 23.9-28.3 dB(A) in the hearing examination room, and 32.5 - 67.9 dB (A) in the mobile test chamber. Age and gender were not confounding factors to the results. Conclusion The hearing test method and its environmental noise were able to make the threshold measurements shift up significantly. The environmental noise of the mobile test chamber in the examination vehicle has exceeded the standard and needs to be improved.