[Investigation of a carbon monoxide poisoning accident with a hidden source].

In June 2022, a carbon monoxide poisoning accident with hidden source occurred in a bonded gold/silver wire manufacturing enterprise in Guangzhou, causing 10 people to be poisoned, of which 1 was caused by carbon monoxide poisoning and 9 by carbon monoxide contact reaction. The symptoms were dizziness, fatigue and vomiting. After 5 to 7 h, the saturation of carboxyhemoglobin in finger pulse was 4% to 10%, and the saturation of carboxyhemoglobin in blood gas biochemical analysis was 1.9% to 5.8%. The concentration of carbon monoxide detected in the carbon borne purification plant of the enterprise was 34.46-37.26 mg/m(3). It was judged that the accident was carbon monoxide poisoning caused by carbon monoxide gas being transported to the work post along the gas transmission pipeline due to abnormal operation of the carbon borne purification plant. By investigating the source and cause of poison, this paper provides a warning for the similar process to prevent similar events, and provides a new idea for the identification of chemical poisoning risk. At the same time, it is warned that similar enterprises should fully consider the risk of poisoning under specific circumstances, strengthen equipment maintenance and repair, and prevent the occurrence of similar incidents.

Current challenges of university laboratory: Characteristics of human factors and safety management system deficiencies based on accident statistics.

INTRODUCTION: In recent years, with the rapid development of university laboratory construction, frequent laboratory accidents have aroused widespread concern. There is an urgent need to improve laboratory safety management's effectiveness further, enhance laboratory accident prevention ability, and reduce the occurrence of accidents. METHOD: Based on the accident causation theory, this paper uses the accident analysis path of 24Model and the logical idea of WBA (Why-Because-Analysis) to statistically analyze the causative factors of 64 typical college laboratory fire and explosion accidents and find out the defects of current college laboratory management. RESULTS: The study showed that unsafe human actions at the individual level were the most critical factors affecting laboratory safety management, with a high frequency of violations of experimental procedures (105 times) and managers' failure to perform their supervisory duties (98 times); low safety awareness and insufficient safety knowledge among laboratory personnel were key factors triggering unsafe actions. At the organizational level, the lack of training programs (92 times) and the lack of systematic procedures (106 times) are the weaknesses of the laboratory safety management system in general in all universities; the lack of safety culture construction is the root cause of laboratory management deficiencies. CONCLUSIONS: Based on the above statistical results, and taking into account the characteristics of university laboratories themselves, the root causes of poor safety are specifically analyzed and preventive measures are proposed in six areas to address the key causes of accidents. PRACTICAL APPLICATIONS: The results of this study are essential for improving the ability to prevent accidents in flammable and explosive laboratories in universities.

Fall and collision related injuries among pedestrians, sickness absence and associations with accident type and occupation.

OBJECTIVES: This study explores pedestrian fall accidents and collisions with other road users in the Swedish road transport system, and sickness absence (SA) in relation to accident type, injury, and occupation. Further, it studies the associations between accident type, occupation, and duration of SA. METHODS: Data from several national registers were used that included 15,359 working age pedestrians (20-64 years) receiving healthcare after a fall or collision throughout 2014-2016. Individual characteristics, accident type, injury, and occupation were presented and related to SA. Logistic regression was used to estimate odds ratios (OR), with 95% confidence intervals, for associations between accident type, occupation, and SA duration. RESULTS: About 11,000 pedestrians (72%) were involved in fall accidents in the road traffic environment and well over 4,000 in collisions with another road user; 22% of all injured pedestrians had a new SA. The population had a higher proportion of women and individuals in older age groups (≥45). Of the falls, 31% were due to snow or ice, and these were associated with a higher OR for both short SA (<90 days) 1.76 (95% CI 1.56-1.98) and long SA (≥90 days) 1.81 (95% CI 1.51-2.18), compared to the group slipping, tripping, and stumbling. The working sectors health & social care, and construction had the highest ORs for SA. A higher OR was found for health & social care, short SA 1.58 (95% CI 1.38-1.81), long SA 1.79 (95% CI 1.45-2.20) and for construction, short SA 1.56 (95% CI 1.24-1.96), long SA 1.75 (95% CI 1.26-2.44), compared to the sector finance, communication, & cultural service. CONCLUSIONS: The OR for having short and long SA was higher in falls due to snow or ice and differed between occupational sectors. PRACTICAL IMPLICATIONS: This information contributes to the knowledge base for planning a safe road transport system for pedestrians.

Twenty-two years later: consistent dose estimation of an accidental overexposure by retrospective biological dosimetry.

The goal of this study was to retrospectively estimate the exposure dose of a victim from the Lilo radiological accident in Georgia after 22 y and compare it with the original cytogenetics-based analysis performed in our laboratory. Similar types of studies have been published, notably involving victims of the Chernobyl, Goiânia and Tammiku accidents. Nevertheless, their estimations were done after shorter periods of time post-exposure, and in some cases, the exposure might not have been exclusively of an external nature. In this study, Fluorescence In Situ Hybridization (FISH) was used to score chromosomal translocations in lymphocytes from a recent blood sample of the victim and the dose assessment was performed using our laboratory's FISH calibration curve. The resulting whole-body exposure dose of 0.35 Gy [0.12, 0.72] was similar to the one obtained when reanalysing the original scoring data from 1997 (0.38 Gy [0.13-0.75]), suggesting that our current calibration curve could be used for relative dose estimations long time after external exposure.

Environmental forensics using stable and radioactive isotopes in naturally attenuated soil after phenol-leakage accidents.

Phenol is a carcinogenic and hazardous chemical used in multiple industries and poses a high risk of chemical spills into the environment. To date, environmental forensic research has not focused on chemically remediated soils. In this study, an advanced environmental forensic analysis was performed on microbial communities and breakdown products of phenol, carbon stable isotopes, and radioactive isotopes in phenol-contaminated soil. As indicators of phenol-spill accidents after natural attenuation, higher δ13C levels and lower 14C/12C ratios were observed in phenol-contaminated soil compared with uncontaminated soil. In addition, 16s rRNA gene analysis revealed that phenol-breakdown products identified by gas chromatography-mass spectrometry and the presence of soil bacteria, such as Nocardioides, Faecalibacterium, and Bacteroides, were indicators of phenol-leakage accidents. Therefore, the proposed environmental forensic strategy is a valuable tool for identifying the location of previously occurring chemical accidents and estimating the ecological impact after the natural attenuation of contaminated soils.

[Storytelling in prevention: the case-study of accidents at work. How the narrative method can enhance the prevention of occupational injuries.] / Narrare per prevenire: il caso degli infortuni sul lavoro.Come il metodo narrativo può valorizzare la prevenzione degli infortuni lavorativi.

OBJECTIVE: This article aims to analyze the elements of the narrative which, applied to investigations of accidents at work, transform them into stories, making the dynamics of accidents clearer, more complete and emotionally engaging and also capable of being transferred to a non-experts audience. METHOD: The theoretical reference identified for the analysis of the accident histories is the work of the Lithuanian semiologist Algirdas Julien Greimas. The title, the dimensions of space and time, the characters (according to the actantial model), the point of view, the structure of the story (following the canonical narrative scheme), and the moral of the tale are the elements of the narration analyzed in this article. RESULTS: This article illustrates how the dynamics of accidents can lend themselves to being told according to the typical categories of narration and textual organization, resulting in them being enriched with important elements for the communication of prevention and the learning of safe behaviour. The accident investigation that becomes history takes on important characteristics also in terms of communication: the contents become clearer, more accessible and more engaging. Unlike traditional surveys, injury stories, through the elements of the narrative and in particular with the addition of indications for prevention, become an efficient learning and sharing tool valid in training contexts, and the contents effectively usable in practice of prevention workers. CONCLUSIONS: The narration applied to accidents at work, allowing for greater attention to the elements of the context, relationships and the emotional sphere of the various actors involved, is able to bring out more clearly the important and various factors that can contribute to causing an accident, becoming thus an effective tool for the transfer of indications for prevention.

Epidemiological profile of occupational risks associated with artisanal burning of plastic materials in Parakou / Profil épidémiologique des risques professionnels associés au brûlage artisanal de matières plastiques à Parakou

Introduction: Burning plastic releases toxic fumes and gases. More and more people engage in the professional activity of welding plastic parts by fusion in Benin. Hence the need for this study. Purpose of research: To assess the frequency of the various occupational risks associated with the welding of plastic materials by burning in Parakou. A cross-sectional, descriptive, and analytical study focused on plastic welders in Parakou. The data was collected using a questionnaire. The variables studied were accidents at work, occupational diseases, and socio-professional characteristics. The data was analyzed by Epi info version 7.2.1.0. The significance level was set at p < 0.05. Results: A total of 137 subjects were surveyed. They were all male. Almost all of them were victims of accidents at work. The lesions were mainly on the fingers (99%) and feet (99%). The most expressed morbid manifestations were musculoskeletal disorders (98%), rhinitis (87%), cough (79%), tearing (98%) and conjunctival hyperemia (93%). Conclusions: Plastic welding in Parakou is a high health risk activity for craftsmen. It is urgent to take protective measures for these craftsmen.

Introduction: La combustion du plastique dégage des fumées et des gaz toxiques. De plus en plus de personnes se livrent à l'activité professionnelle de soudage de pièces en plastique par fusion au Bénin, d'où la nécessité de cette étude. But de l'étude: Évaluer la fréquence des différents risques professionnels associés au soudage de matières plastiques par brûlage à Parakou. Il s'agit d'une étude transversale, descriptive et à visée analytique qui a porté sur les soudeurs de plastiques à Parakou. Les données ont été collectées à l'aide d'un questionnaire. Les variables étudiées étaient l'accident du travail, les maladies professionnelles et les caractéristiques socioprofessionnelles. Les données ont été analysées par Épi info version 7.2.1.0. Le seuil de signification a été fixé à p < 0,05. Résultats: Au total 137 sujets ont été enquêtés. Ils étaient tous de sexe masculin. La quasi-totalité d'entre eux était victime d'accidents du travail. Les lésions siégeaient surtout aux doigts (99 %) et aux pieds (99 %). Les manifestations morbides les plus exprimées étaient les troubles musculo-squelettiques (98 %), la rhinite (87 %), la toux (79 %), le larmoiement (98 %) et l'hyperhémie conjonctivale (94 %). Conclusions: Le soudage de plastique à Parakou est une activité à risque sanitaire élevé pour les artisans. La prise de mesures protectrices pour ces artisans est urgente.

Carbon monoxide poisoning mortality in the United States from 2015-2021.

INTRODUCTION: Most carbon monoxide poisoning is preventable. Tracking of longitudinal trends in carbon monoxide-related mortality is needed to guide public health efforts. This study sought to describe mortality in the United States from carbon monoxide poisoning, examine the epidemiology of unintentional ("accidental") and intentional exposures, and identify trends in both. METHODS: The Centers for Disease Control and Prevention's Wonder databases were utilized to extract online data from National Center for Health Statistics files containing mortality data in the United States from 2015-2021. Extracted were deaths, crude death rates, intent of exposure, and demographics of persons dying from carbon monoxide poisoning, excluding cases related to fires. Also extracted was the number of suicidal deaths of all types. Carbon monoxide deaths related to consumer products were obtained from the Consumer Product Safety Commission. Information on state legislation mandating residential carbon monoxide alarms was obtained from online resources. RESULTS: Total carbon monoxide deaths decreased from 1,253 in 2015 to 1,067 in 2021. An increase in accidental poisoning deaths was offset by a larger decrease in intentional deaths, despite an increase in suicides of all types in the country. For the first time in the United States, accidental carbon monoxide deaths (543) outnumbered intentional deaths (524) in 2021. The increase in accidental deaths is consistent with those recently reported from carbon monoxide-emitting consumer products by the Consumer Product Safety Commission. Furthermore, even though over one-half of accidental deaths occurred at home, no evidence of a protective effect of state laws requiring residential carbon monoxide alarms was seen. CONCLUSIONS: Accidental carbon monoxide poisoning deaths increased from 2015-2021 for the first time in four decades. Exploration of the possibility they are due to consumer products warrants attention and prevention efforts. We were unable to demonstrate the preventive effect of residential carbon monoxide alarm legislation.

[New assessment recommendations for disability in private accident insurance, part 4 : An interdisciplinary consensus approach-Disability outside the compensation scheme]. / Neue Bemessungsempfehlungen zur Invalidität in der PUV, Teil 4 : Ein fachübergreifend konsentierter Ansatz ­ Invalidität außerhalb der Gliedertaxe.

The following article is an element of a 4-part series on the presentation and discussion of new design recommendations for disability compensation in the private accident insurance. The introduction to the topic and the associated basics as well as the concept of the new draft of the design recommendations for the upper and lower extremities have already been published in Die Unfallchirurgie (formerly Der Unfallchirurg) on 17 February, 18 July and 18 November 2022 [2-4]. The topic of the fourth and final part published here is the assessment recommendations for disability outside the compensation scheme.

Impacts of offshore oil spill accidents on island bird communities: A test run study around Orkney and Svalbard archipelagos.

The sea area around the Orkney archipelago, Scotland is subjected to substantial maritime shipping activities. By contract, the Svalbard archipelago, Norway currently has a rather low marine traffic profile. Future projections, however, indicate that the Trans-Arctic route might change the whole transportation picture and Svalbard may be at the centre of maritime activities. Both archipelagos have sensitive environmental resources at sea and inland, including bird communities. There are, for instance, 13 Red Listed species present in Orkney and 2 in Svalbard. In this regard, it is important to address oil spill risks along existing and projected shipping routes. Hypothetical spills were simulated in twelve scenarios for both the Orkney and Svalbard archipelagos with the OpenDrift open-source software. The results indicate risks to seabird communities. For Orkney, the spills resulted in the most extensive contamination of the sea and land environments in autumn. For Svalbard, autumn spills on the contrary presented the lowest risk to seabirds. Based on the simulations, we recommend increased caution for shipping activities in the problematic seasons, improved local readiness for ship accidents and sufficient pre-incident planning.

Costs of preventing and supressing wildfires in Victoria, Australia.

Land managers around the world are increasingly under pressure to demonstrate that the actions being used to moderate wildfire risk are effective and cost-efficient. However, little research to date has focused on determining cost-efficiency of management actions or identified the factors which increase the costs of performing such actions. Here, we aimed to identify the key drivers of cost for fuel management (prescribed burning, mulching, and slashing), fuel breaks, and suppression using data from the state of Victoria, Australia. We utilise generalised additive models to understand how environmental factors, terrain, location, and management decisions influence the cost of implementing wildfire management efforts. These models show that cost per unit declines as the area treated or the area of the fire increases for all four management approaches. Therefore, preventative, and responsive management actions represent economies of scale that reduce in cost with larger treatments. We also found that there were regional differences in the cost of fuel management and fuel breaks, potentially related to the structure of resourcing treatments in each region and the availability of land on which it is feasible to implement management. Cost of suppression per fire increased with the number of fire fighters and when there were more fires occurring concurrently in the landscape. Identifying the key drivers of cost for preventative and responsive management actions could enable managers to allocate resources to these actions more efficiently in future. Understanding drivers of cost-efficiency could be critical for adapting management to shifts in wildfire risk, particularly given climate change will alter the window in which it is safe to apply some preventative fuel management actions and reduce suppression effectiveness.

Rare incidental foreign body in the maxillary sinus on routine radiographic examination.

Accidental entry of any foreign body into the paranasal sinus could be due to known causes or unknown causes with the patient being either symptomatic or sometimes asymptomatic. Such asymptomatic conditions make it difficult to detect the foreign body for an indefinite period which on a longer duration may lead to various complications later. Routine radiographic examination during dental checkup reports to serve a good purpose in these kinds of cases by accidental detection of such foreign bodies in the maxillofacial region leading to early diagnosis and timely management. The present paper highlights the importance of routine radiographs in detecting a rare type of foreign body (nasal stud) in the maxillary sinus in the asymptomatic patient.

Preventing selfie-related incidents: Taking a public health approach to reduce unnecessary burden on emergency medicine services.

Unintentional deaths from selfies have received limited exposure in emergency medicine literature; yet trauma remains the leading cause of death and disability in children and young adults, and most of those implicated in a selfie incident are in this demographic. Selfie-related injuries and deaths may be a relatively new phenomenon, but data suggest they are a public health hazard that is not going away. Emergency medicine practitioners may have a role to play in the primary and secondary prevention of selfie incidents, including delivering opportunistic behaviour change messaging to those who are at risk of being injured or killed in a selfie-related incident, particularly young (14-25 years) males. Emergency medicine specialists should be aware of the dangers of selfie-related incidents and understand their polytraumatic presentation.

Accidental carbon dioxide poisoning due to dry ice during a funeral wake: An autopsy case.

We report the autopsy case of a male in his 60 s diagnosed with carbon dioxide (CO2) poisoning caused by dry ice for cooling in a coffin during a funeral wake. He was last seen alive, clinging to his family member's body with his head inside the coffin. The autopsy and histological findings did not indicate a specific cause of death. To confirm the concentrations of CO2 and oxygen (O2) in the coffin, an experiment was conducted to reconstruct the scene. Based on the experimental results, 9 h after placing dry ice, the CO2 concentration at the estimated closest point to his head was 24%, a lethal level for CO2 poisoning. Contrastingly, although the concentration of O2 had fallen, it never reached a lethal concentration at any of the determination points during the experiment, thereby ruling out asphyxia as a cause of death. Based on our findings, we concluded that the cause of his death was CO2 poisoning. Forensic pathologists tend to overlook CO2 poisoning unless suspected, as it does not exhibit specific autopsy findings. For the diagnosis of CO2 poisoning, it is essential to collect detailed information about the deceased and the scene of death. The toxicity of CO2 itself is not well known, although dry ice is widely available to the public. In order to make its risk well known, it is necessary to inform people about the dangers of using dry ice.