Purpose of the work: To assess the impact of fixed night shift on the vigilance of paramedical staff. Methods: The present study is an exhaustive cross-sectional survey which has been conducted at the University Hospi...Purpose of the work: To assess the impact of fixed night shift on the vigilance of paramedical staff. Methods: The present study is an exhaustive cross-sectional survey which has been conducted at the University Hospital of Monastir, Tunisia, and it is about 92 care agents working permanently the night. The study of vigilance is based on Epworth scale and Super Lab program. Results: The average age was equal to 42.53 ± 9.45 years with a sex ratio of 1.72. Nurses accounted for 72%. The average score of alertness assessed with Epworth scale was equal to 14.5 ± 6. The use of the Super Lab software has objectified a tendency towards the increase in the average time of reaction of accomplishment of the simple task and the positive cueing task, which was evaluated while starting the shift, during the half time of the work and at the end of the shift. In addition, the average rate of errors evaluated at the beginning, half-time and at the end of the work has increased during 3 tests (simple task, positive and negative cueing tasks) without this difference being statistically significant. Conclusion: The alteration of vigilance with an ascent of the error rate among fixed night shift workers is a reality, which puts in question, not only the health of paramedical staff but also the care safety provided by these teams.展开更多
Introduction:Night shift work is a complex and frequent occupational exposure,and breast cancer stands as the most prevalent cancer in women.The International Agency for Research on Cancer(IARC)has twice classified ni...Introduction:Night shift work is a complex and frequent occupational exposure,and breast cancer stands as the most prevalent cancer in women.The International Agency for Research on Cancer(IARC)has twice classified night shift work as a probable breast carcinogen,with the latest classification in June 2019.Since that time,new epidemiologic data has emerged.Methods:We searched PubMed for original articles based on cohort and case-control studies of“breast cancer and night shift work”published after the IARC evaluation in June 2019.Results:In total six cohorts and four case-control studies were included in our review.Overall,we observed some support for associations between persistent(long duration or high frequency)night shift work and an increase in breast cancer risk,though most studies were relatively small and statistically under-powered.Moreover,the recent studies do not contribute further evidence regarding the interaction with menopausal status,diurnal preference,hormonal subtypes of breast cancer or gene-environment aspects,which were issues that were left from the IARC evaluation.Conclusions:The available new results somewhat consolidate the epidemiological evidence from IARC’s 2019 evaluation,and do not provide further evidence regarding interaction of interest,e.g.menopausal status,etc.Therefore,long term follow-up of prospective cohorts or nested case-control studies,including precise exposure assessment and examinations of relevant interactions such as menopausal status,diurnal preference,hormonal subtypes of breast cancer and gene-environment aspects,are warranted.Meanwhile,protective measures for the night workers should be considered.展开更多
Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation betw...Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation between stress and fatigue and prolonged night shifts. Twenty-five nurses (9 men, 16 women;16 h night shift (n = 13), 8 h day shift (n = 12)) from Juntendo University Koshigaya Hospital were evaluated for four consecutive workdays separated by off days. Salivary samples were collected upon waking and before sleep on non-working days, before and after the day and night shifts, and before and after the break during the nocturnal schedule, and analyzed for levels of cortisol, chromogranin A, α-amylase activity and secretory immunoglobulin A (sIgA). On non-working days, cortisol levels showed similar kinetic pattern in both nurses. On working days, day-time nurses’ cortisol levels showed normal circadian pattern throughout the shift. Night nurses’ cortisol levels at the beginning of the shift were comparable to that of the normal morning elevation. α-Amylase activity in the night shift nurses was higher than day shift nurses through each period. No significant differences in chromogranin A and sIgA levels were detected between day and night shift workers. A 16 h night shift may cause marked circadian misalignment in cortisol levels.展开更多
文摘Purpose of the work: To assess the impact of fixed night shift on the vigilance of paramedical staff. Methods: The present study is an exhaustive cross-sectional survey which has been conducted at the University Hospital of Monastir, Tunisia, and it is about 92 care agents working permanently the night. The study of vigilance is based on Epworth scale and Super Lab program. Results: The average age was equal to 42.53 ± 9.45 years with a sex ratio of 1.72. Nurses accounted for 72%. The average score of alertness assessed with Epworth scale was equal to 14.5 ± 6. The use of the Super Lab software has objectified a tendency towards the increase in the average time of reaction of accomplishment of the simple task and the positive cueing task, which was evaluated while starting the shift, during the half time of the work and at the end of the shift. In addition, the average rate of errors evaluated at the beginning, half-time and at the end of the work has increased during 3 tests (simple task, positive and negative cueing tasks) without this difference being statistically significant. Conclusion: The alteration of vigilance with an ascent of the error rate among fixed night shift workers is a reality, which puts in question, not only the health of paramedical staff but also the care safety provided by these teams.
文摘Introduction:Night shift work is a complex and frequent occupational exposure,and breast cancer stands as the most prevalent cancer in women.The International Agency for Research on Cancer(IARC)has twice classified night shift work as a probable breast carcinogen,with the latest classification in June 2019.Since that time,new epidemiologic data has emerged.Methods:We searched PubMed for original articles based on cohort and case-control studies of“breast cancer and night shift work”published after the IARC evaluation in June 2019.Results:In total six cohorts and four case-control studies were included in our review.Overall,we observed some support for associations between persistent(long duration or high frequency)night shift work and an increase in breast cancer risk,though most studies were relatively small and statistically under-powered.Moreover,the recent studies do not contribute further evidence regarding the interaction with menopausal status,diurnal preference,hormonal subtypes of breast cancer or gene-environment aspects,which were issues that were left from the IARC evaluation.Conclusions:The available new results somewhat consolidate the epidemiological evidence from IARC’s 2019 evaluation,and do not provide further evidence regarding interaction of interest,e.g.menopausal status,etc.Therefore,long term follow-up of prospective cohorts or nested case-control studies,including precise exposure assessment and examinations of relevant interactions such as menopausal status,diurnal preference,hormonal subtypes of breast cancer and gene-environment aspects,are warranted.Meanwhile,protective measures for the night workers should be considered.
文摘Prolonged night shift is associated with high burnout rate, but the physiological effects of a 16 h shift remain undetermined. Here we evaluated fatigue and stress via salivary assays to determine the correlation between stress and fatigue and prolonged night shifts. Twenty-five nurses (9 men, 16 women;16 h night shift (n = 13), 8 h day shift (n = 12)) from Juntendo University Koshigaya Hospital were evaluated for four consecutive workdays separated by off days. Salivary samples were collected upon waking and before sleep on non-working days, before and after the day and night shifts, and before and after the break during the nocturnal schedule, and analyzed for levels of cortisol, chromogranin A, α-amylase activity and secretory immunoglobulin A (sIgA). On non-working days, cortisol levels showed similar kinetic pattern in both nurses. On working days, day-time nurses’ cortisol levels showed normal circadian pattern throughout the shift. Night nurses’ cortisol levels at the beginning of the shift were comparable to that of the normal morning elevation. α-Amylase activity in the night shift nurses was higher than day shift nurses through each period. No significant differences in chromogranin A and sIgA levels were detected between day and night shift workers. A 16 h night shift may cause marked circadian misalignment in cortisol levels.
