Indian Journal of Occupational and Environmental Medicine最新文献

Introduction: Modernization has led to greater usage of Air Conditioners (ACs) in our daily lives. It is observed that the occupants of office buildings with ACs consistently report on average more symptoms than do occupants of office buildings with natural ventilation referred to as Sick Building Syndrome (SBS). The appearance of symptoms reduces work efficiency and increases absenteeism due to sickness (sickness absenteeism). Therefore, the present study was planned to evaluate the impact of usage of ACs on SBS and to find out the association of ACs with sickness absenteeism and lung function tests.

Materials and methods: This study was conducted on 200 healthy non-smoker adults in the age group of 18 to 45 years who were using ACs for at least 6 to 8 h/day for more than 2 years (group I). And 200 healthy adults, age and gender-matched, with the same work pattern, not using ACs at all served as controls (group II). The basic information on the usage of ACs and the prevalence of discomfort related to neural symptoms, respiratory symptoms, and skin and mucous membrane related to SBS was obtained through a questionnaire.

Results: The building-related symptoms in group I males were more compared to group II males and significantly higher in group I males compared to females. We observed that the appearance of symptoms of SBS led to sickness absenteeism among group I participants. Lung function tests especially FVC, FEV1, PEFR, and MVV were significantly reduced among group I males and females compared to group II males and females.

Conclusion: ACs have a profound effect on the quality of the air we breathe and on human health than just lowering the temperature. There is a higher prevalence of SBS-Respiratory and allergic symptoms in AC users.

Context: Moral distress is a common phenomenon in nurses that causes feelings of anger, fatigue, reduced quality of patient care, and leaving the nursing profession. To reduce the negative effects of this phenomenon, it is necessary to study the strategies and mechanisms to deal with it.

Aims: It has been less studied in psychiatric nurses, so this study was conducted to investigate the mechanisms and strategies of psychiatric nurses in dealing with situations of moral distress.

Settings and design: This qualitative study was conducted based on a conventional content analysis of 12 psychiatric nurses selected by a purposive sampling method in the 2020 winter in Shiraz, Iran, considering the maximum diversity. Data were collected through semi-structured interviews with participants for an average of 40-60 minutes per interview until data saturation.

Results: We obtained strategies for dealing with moral distress in psychiatric nurses in four categories. The categories included "Coping strategies," "Establish therapeutic and professional communication," "Managerial support for nurses," and "Commitment to religious beliefs."

Conclusions: Psychiatric nurses use personal, team, and management strategies to reduce moral distress in themselves and their colleagues and reduce its adverse effects on patients. Management support and organizational cooperation are necessary for the better implementation of these strategies.

Background: Auto-rickshaw drivers (ARDs) are under constant physical and mental pressure due to illiteracy, poverty, lack of awareness about hazards of addictions, and other factors that lead to various habits majority being tobacco use. Studies have found that tobacco use is very prevalent among ARDs in comparison to general population. Tobacco use is commonly associated with cancers. Oral Pre-Malignant Lesions (OPMLs) are the strongest risk factor for majority of oral cancers. We studied the prevalence of OPML among ARDs of Belagavi and their association with tobacco use.

Methods: It was a cross-sectional study conducted among 600 regular ARDs of Belagavi City during January to December 2016. We selected two ARDs that were the last in line from 300 major auto-rickshaw stands. We adapted the questionnaire from Global Adult Tobacco Survey questionnaire. After getting informed consent, we collected the data by personal interview and performed an oral visual examination for OPML for all the study participants. Data were analyzed using SPSS software. Institutional Ethics Committee approved the study.

Results: Prevalence of tobacco was 62.17%. One-third of participants (30.17%) had OPMLs. Leukoplakia (62.43%) was the most common lesion. OPMLs were significantly associated with tobacco use and duration of tobacco use.

Conclusions: About 30% of ARDs had an OPML. Chewing tobacco, gutkha, lime with tobacco, and cigarette were significantly associated with OPML.

Context: Lathe machine work is an important unorganized sector in India. However, to date, no work physiological studies have been conducted among these workers to evaluate the physical strain involved in this work.

Aim: The present study aims to determine the workload in different lathe machine tasks from working heart rates (HRs) and certain cardiac indices.

Settings and design: A cross-sectional study was conducted among 38 full-time male workers aged between 21 and 60 years.

Methods and materials: The HR was measured directly during the productive work phase, additional work phase, and work pauses. Two cardiac strain indices, viz., net cardiac cost and relative cardiac cost were derived. The workload was also judged according to some standard acceptable criteria of physical strain.

Statistical analysis used: Mean and standard deviation were obtained for different categories of HR. Intergroup comparisons were conducted through one-way analysis of variance and the t-test.

Results: The mean working HR was found to be 99 beats per minute. A maximal working HR of 105 ± 6.1 beats per minute with a corresponding relative cardiac cost of 26% was obtained during the additional work phase.

Conclusions: The overall workload appeared to be moderate in nature. An acceptable criterion of cardiac cost of 30% appeared to be the most sensitive index in detecting workers experiencing a higher level of physical strain.

Background: N95 filtering facepiece respirators (FFR) are used by health care workers for prevention of airborne infection, and its use has increased manifolds during COVID-19 pandemic. Prolonged use may result in carbon dioxide (CO₂) accumulation, affect hemodynamics, and blood gas values. Although arterial blood gas values accurately measure the blood CO₂ levels, venous blood gas values also show acceptable correlation.

Aim: To evaluate the physiological impact of N95 FFRs on health care workers, including hemodynamic changes and venous blood levels of CO₂ during a period of 6 h.

Settings and design: Prospective observational study in a tertiary care hospital.

Methods: The study was conducted on 30 health care workers who performed routine duties while wearing N95 FFR. Venous blood gas values (CO₂, pH, and bicarbonate) and vitals (respiratory rate, heart rate, blood pressure, and saturation) were noted at baseline, 2 (T2), and 6 h (T6) after wearing the mask. Discomfort level was also measured on a Visual Analogue Scale (VAS) of 1-10.

Statistical analysis: Repeated measures analysis was done using repeated measures ANOVA or Friedman's test. Group comparisons for continuously distributed data were made using independent sample "t" test or Wilcoxon test.

Results and conclusion: Hemodynamic and blood gas values did not change over time. The VAS for discomfort because of respirator use was 1.33 (1.42) at T2 and 2.77 (1.91) at T6. This was a significant increase in discomfort over time (P = 0.001). About 80% of participants experienced discomfort during this period. N95 FFR did not lead to significant alteration in hemodynamics or change in blood gas values after 6 h of continuous usage. However, discomfort significantly increased over time.

Color blindness or color vision deficiency (CVD) is a disease that makes recognizing colors difficult or impossible. A person with color blindness may find it challenging to obtain employment, particularly in positions that need the ability to distinguish or see colors accurately. As the world's largest producer of palm oil, Indonesia employs a vast number of people in this industry. To discern between ripe and unripe oil palm fruit, harvesting jobs for oil palms is one of the occupations that require excellent color recognition skills. In the lack of a practical test method to determine the eligibility of a color blind oil palm fruit harvester, a simple yet effective test that can be modified for each enterprise is required.

Background and objective: Literature review revealed that chemicals used in the printing industry show an association between genotoxicity and occupational exposure. Flexography is one type of printing technique recently becoming popular because of its fast, cost-efficient, and high-quality label printing. The micronucleus (MN) is considered to be a reliable marker for genotoxic damage, and it has a close association with cancer incidences by determining the presence and the extent of the chromosomal damage. Because there are no studies on flexographic workers (FWs), this study was intended to analyze and evaluate the effect of occupational exposure on the MN frequency of buccal epithelial cells.

Materials and methods: The study comprised 100 FWs and 100 age-matched healthy controls with and without smoking habits. Buccal epithelial cells were collected from all subjects by using a cytobrush, followed by staining with Feulgen fast green. The MN frequency was recorded for each individual using the Tolbert et al. criteria. Data was statistically analyzed by using one-way analysis of variance and the posthoc test.

Results: FWs with smoking habits showed a significant increase in MN frequency (1.86 ± 1.77) than workers without the habit (1.02 ± 1.08) and controls (with the habit 1.26 ± 1.33 and without the habit 0.62 ± 0.92). However, there was no significant increase of MN in FWs without the habit when compared with controls.

Conclusion: This study observed the cytogenetic damage in FWs and concludes that these workers are at greater risk for genotoxicity, and the MN assay can serve as a useful biomarker.