Consequences of Shift Work and Night Work: A Literature Review

Shift work sleep disorder in nurses: a concept analysis

AIM

This study seeks to elucidate the concept of shift work sleep disorder (SWSD) among nurses, thereby offering a comprehensive understanding that can inform future research and practical interventions.

METHODS

Walker and Avant's concept analysis method was employed to guide the study. A systematic literature review was conducted utilizing various databases, including PubMed, Embase, EBSCO, Web of Science, CNKI, WanFang, and Sino Med. The inclusion criteria were specifically designed to focus on studies that define SWSD, along with its attributes, antecedents, consequences, and assessment tools relevant to nursing professionals.

RESULTS

The analysis identified four key attributes of SWSD: internal/external circadian rhythm imbalance, impaired sleep, multidimensional health problems, and dynamic changes in symptoms. Antecedents include individual factors like personal health, lifestyle, family support, shift patterns, work environment, and other organizational factors. Consequences of SWSD encompass physiological health issues, mental health challenges, impaired social adaptability, and decreased nursing performance.

CONCLUSION

SWSD has a significant impact on the health and performance of nurses. Understanding its attributes, antecedents, and consequences is crucial for developing targeted interventions. Enhancing sleep hygiene, fostering supportive work environments, and implementing appropriate shift scheduling can help mitigate the adverse effects associated with SWSD.

Investigating the types of eating behavior among shift workers in the machine-building industry

INTRODUCTION

Shift work has become the norm and an absolute necessity in various sectors of public life. Different production processes, technologies, and the nature of certain jobs lead to various health risks. Unhealthy eating behaviors remain common among shift workers across all economic sectors.

Shifting Rhythms: A Systematic Review Exploring the Multifaceted Effects of Shift Work and Circadian Disruption on Employee Cardiovascular Health

Shift work has long been studied as a contributing risk factor for cardiovascular disease. This study aims to provide a comprehensive summary of data regarding shiftwork and its impact on the cardiovascular system from the last decade. It explores the association of shift schedules with multiple aspects of cardiovascular disease and the physiological processes that lead up to it. It also identifies gaps in current knowledge regarding the topic. Two hundred and sixty-eight articles were gathered from PubMed, Google Scholar, and Science Direct using relevant medical subject headings (MeSH) strategy and advanced search using keywords including 'Shift work,' 'Night shift,' 'Occupational health,' 'Circadian rhythm,' 'Cardiovascular disease,' 'Cardiovascular health.' The search was conducted in April and completed in May 2023. Systemic reviews, meta-analysis, cohort and cross-sectional studies from the last 10 years were included, and assessment of multiple systematic reviews (AMSTAR), Newcastle Ottawa, and Joanna Briggs Institute (JBI) tools were used, respectively, for quality assessment. A total of 14 articles were included in our review, including five systematic reviews and meta-analyses, six prospective cohort studies, and three cross-sectional studies. Each study reported a significant association between shift work with some aspect of cardiovascular disease. An increase in the risk of myocardial infarction, coronary heart disease, hypertension, atherosclerosis, and metabolic syndrome is reported. Circadian disruption, unhealthy diet, and emotional and physiological stress contribute to these effects. Oxidative damage and inflammatory biomarkers appear to play a role in this process, but more research is warranted for a deeper understanding of these changes. Despite an abundance of evidence pointing towards the short-term and long-term harm to shift workers' cardiovascular health, there is limited research regarding the policies that are needed to better monitor cardiovascular damage in employees. The focus needs to shift toward prevention-based policies and their efficacy in workplace settings.

Association Between Shift Work and Clean Room Environment on Self-reported Premenstrual Symptoms and Menstrual Pain in Taiwan

Background

Limited research has delved into the effects of work characteristics on premenstrual symptoms (PMS) in women, which can influence work performance and overlook potential hazards for women in their work environments. This study aimed to investigate the impact of shift work and working in a clean room on premenstrual symptoms, menstrual status, and menstrual pain among employed females in an electronics manufacturer.

Methods

A retrospective cohort study was conducted on menstruating female employees between August and December 2014, aged 18-55, who received regular employee health checks. Questionnaires were designed to collect information on demographics, personal lifestyle, menstrual status, menstrual pain scores, and self-reported premenstrual symptoms.

Results

Among 7,193 participants, 18.6% reported moderate to severe menstrual pain affecting their work. Female workers who reported shift work showed an increased prevalence of moderate to severe premenstrual symptoms, including fatigue (RR = 1.20), somatic discomforts (RR = 1.04), diarrhea (RR = 1.04), and tension (RR = 1.05). Additionally, shift work was associated with an elevated risk of experiencing a moderate or significant impact of menstrual pain on work (RR = 1.03), menstrual irregularity (RR = 1.30), and high menstrual pain (RR = 1.23). Working in a clean room was associated with an increased risk of high menstrual pain (RR = 1.13). Subjects working shifts in a clean room had the highest pain scores compared to the other groups.

Conclusion

This study underscores the association of work-related factors on PMS in female employees. Our findings contribute to a better understanding of premenstrual symptoms in female workers with different work characteristics, emphasizing the potential hazards of work-related factors on female employees.

Effects of shift work on sleep quality and cardiovascular function in Taiwanese police officers

This study aimed to investigate the effects of shift work on sleep quality, cardiovascular function, and physical activity (PA) levels in Taiwanese police officers. Twenty-one male police officers aged 26.9 ± 4.1 years old located in Taipei voluntarily participated in this study. The participants completed the resting heart rate (HR) and hemodynamic variables (e.g. blood pressure, BP) before and after day-time (DTW) and night-time (NTW) shift work phases (5 working days and 2 resting days for each phase). Additionally, an actigraphy was administered to measure PA and sleep patterns in the last 3 working days. The average total sleep time and sleep efficiency were 278.5 ± 79. 6 min and 72.9 ± 10%, respectively, in the NTW phases, which were significantly lower than that in the DTW phases. A comparison of the PA characteristics between the two phases revealed that a lower proportion of moderate-vigorous PA (1.2 ± 0.8%) and a greater proportion of sedentary behaviour PA (74.8 ± 6.4%) was found in the NTW phases. The results of hemodynamic measures demonstrated that the police officers have significantly elevated systolic BP by 3.3% and diastolic BP by 3.9% after the NTW phases. Furthermore, the NTW phases exhibited a significantly higher percentage change ratio of systolic BP and diastolic BP compared to the DTW phases. Compared with the DTW phases, the NTW phase was significantly more likely to report higher decreasing parasympathetic-related HR variability with a range of -5.9% to -7.8%. In conclusion, night-time shift work resulted in negative physiological changes leading to adverse effects on the health and well-being of Taiwanese police officers.

Impact of 24 h shifts on urinary catecholamine in emergency physicians: a cross-over randomized trial

24-h shift (24 hS) exposed emergency physicians to a higher stress level than 14-h night shift (14 hS), with an impact spreading on several days. Catecholamines are supposed to be chronic stress biomarker. However, no study has used catecholamines to assess short-term residual stress or measured them over multiple shifts. A shift-randomized trial was conducted to study urinary catecholamines levels of 17 emergency physicians during a control day (clerical work on return from leave) and two working day (14 hS and 24 hS). The Wilcoxon matched-pairs test was utilized to compare the mean catecholamine levels. Additionally, a multivariable generalized estimating equations model was employed to further analyze the independent relationships between key factors such as shifts (compared to control day), perceived stress, and age with catecholamine levels. Dopamine levels were lower during 24 hS than 14 hS and the control day. Norepinephrine levels increased two-fold during both night shifts. Epinephrine levels were higher during the day period of both shifts than on the control day. Despite having a rest day, the dopamine levels did not return to their normal values by the end of the third day after the 24 hS. The generalized estimating equations model confirmed relationships of catecholamines with workload and fatigue. To conclude, urinary catecholamine biomarkers are a convenient and non-invasive strong measure of stress during night shifts, both acutely and over time. Dopamine levels are the strongest biomarker with a prolonged alteration of its circadian rhythm. Due to the relation between increased catecholamine levels and both adverse psychological effects and cardiovascular disease, we suggest that emergency physicians restrict their exposure to 24 hS to mitigate these risks.

Relationship between socio-descriptive characteristics, burnout syndrome, and quality of life of employees

Introduction

Burnout syndrome develops as a consequence of chronic stress among employees. The study objective was to examine what socio-descriptive characteristics of employees might be associated with the appearance of the occupational burnout and to evaluate the relationship between job burnout and the quality of life among security employees of the professional private security sector in Central Serbia.

Methods

A multicenter cross-sectional questionnaire-based study was performed. A multivariate logistic regression analysis and ANOVA post choc test was applied.

Results

A total of 353 respondents (330 male and 23 female) participated in the study. Female sex and older age were associated with a higher risk of total burnout and the development of emotional exhaustion while male sex, higher education, and managerial position were associated with higher personal achievement and lower risk of total burnout. Male sex, marital union, two or more children, and direct contact with clients were significantly associated with a lower quality of life of employees. A significant negative correlation was found between total burnout and the Physical Health Composite Score (PHC) score with a correlation coefficient (rs) of -0.265 (95%CI from -0.361 to -0.163); between total burnout and the and Mental Health Composite Score (MHC) score with a rs of -0.391 (95%CI from -0.480 to -0.301); and between total burnout and TQL score with a rs of -0.351 (95%CI from -0.445 to -0.258).

Conclusion

Female sex and older age were associated with a higher risk of total burnout and the development of EE while a managerial position and higher education were protective factors in relation to the development of burnout. Male sex, marital union, two or more children, and direct contact with clients were significantly associated with a lower quality of life of the employees. Shift work significantly reduced the total quality of life, while managerial positions increased the quality of life.

Physical and psychological repercussions on Nursing workers' health in COVID-19 units: A mixed-methods research study

OBJECTIVE

to analyze how Nursing workers in COVID-19 hospital units perceive the physical and psychological repercussions of work on their health, as well as to identify the factors associated with their perceptions.

METHOD

a parallel-convergent mixedmethods study conducted with 359 Nursing workers from COVID-19 units in seven hospitals. For the collection of quantitative data, a questionnaire containing sociodemographic and labor variables and related to perceptions of physical and psychological repercussions were used, and for qualitative data, semi-structured interviews were used. For the analysis, inferential statistics and thematic content analysis were used.

RESULTS

daytime workers, who had more than one employment contract and worked more than 41 hours/week perceived more moderate/intense physical repercussions, reporting overload and time off deficits. Nurses and CLT workers perceived psychological repercussions more moderately/intensely, mentioning managerial overload and job dissatisfaction. Women were 97% more likely to perceive physical repercussions and three times more likely to perceive psychological repercussions when compared to men, reporting household and family overloads.

CONCLUSION

work and family overloads, intensified by the pandemic context, were associated with the intensity with which Nursing workers perceived physical and psychological repercussions.