OBJECTIVES: The purpose of this study was to assess the ergonomic risk factors in beekeeping, and to evaluate the effectiveness of assistive device hive lift. METHODS: This study included 30 subjects of beekeeper in Pocheon, Korea. We assessed the ergonomic risk of main task in beekeeping with NLE, OWAS and evaluate the effectiveness of hive lift. We also surveyed prevalence of musculoskeletal symptoms among the subjects based on the Korea Working Condition Survey. RESULTS: Moving to different floral origin, internal inspection of beehives, feeding syrup is the most burdensome to musculoskeletal system (NLE LI value=2~3. OWAS action category=4). The prevalence of musculoskeletal symptoms (lower and upper extremities) among the subjects was over 80 %. The introduction of assistive devices in the three hazardous tasks has dramatically reduced the risk by removing manual lifting hives (OWAS action category<1). CONCLUSIONS: Beekeeping is a heavy workload on the musculoskeletal system because it has a lot of manual lifting task. As a result of applying the hive lift, the burden could be reduced.
Beekeeping ; Korea ; Lifting ; Musculoskeletal System ; Prevalence ; Risk Assessment ; Risk Factors ; Self-Help Devices ; Urticaria

OBJECTIVE: To describe the clip reinforcement technique by circumferential wrapping with silastic sheet for the treatment of unclippable cerebral aneurysms and evaluate its long term follow-up results. METHODS: The nature of 26 unclippable aneurysms were as follow:12 blister-like superior wall aneurysm of internal carotid artery (ICA), 6 microaneurysms (<2 mm), 4 fusiform aneurysms, 4 broad-based aneurysms. After aneurysm and the parent artery are circumferentially wrapped by silastic sheet, aneurysm clips are positioned on the sheet with parallel to the parent artery. The mean follow-up period was 37 months (range, 3-140 months). RESULTS: 25 of 26 patients had a favorable outcome and one patient had a severe disabled due to severe vasospasm at 3 months after operation. Of the 21 patients who underwent immediate angiographic examination, stenosis of parent artery was detected in 6 patients and remnant of aneurysm in 4 patients. Asymptomatic occlusion of parent artery was observed in one patient on follow-up angiographic examination. 22 of 24 patients followed-up for a long time had a favorable outcome and 2 patients had a severe disabled (one patient was due to previous severe disabled and the other was due to thalamic intracerebral hematoma developed during the follow-up period). CONCLUSION: In our study, there was no clip reinforcement technique-related clinical complications such as rebleeding of aneurysm or ischemic event during follow-up period. Clip reinforcement technique by circumferential wrapping with silastic sheet is simple and useful method for the unclippable cerebral aneurysm.
Aneurysm ; Arteries ; Carotid Artery, Internal ; Constriction, Pathologic ; Follow-Up Studies* ; Hematoma ; Humans ; Intracranial Aneurysm* ; Parents

BACKGROUND: IgA nephropathy (IgAN) is the most common form of glomerulonephritis, a principal cause of end-stage renal disease (ESRD) worldwide. The mechanisms of onset and progression of IgAN have not been fully revealed, and epidemiologic studies have yielded diverging opinions as to the role of occupational exposure to organic solvents in the initiation or worsening of IgAN. As the authors encountered a laboratory worker with IgAN that progressed to ESRD, we present a case report of IgAN progression due to dichloromethane exposure along with a review of literature. CASE PRESENTATION: A 41-year-old male laboratory worker began to experience gross painless hematuria after two years of occupational exposure to toluene. Although clinical follow-up was initiated under the impression of IgAN based on clinical findings, the patient continued to work for four more years in the same laboratory, during which he was in charge of laboratory analysis with direct exposure to a high concentration of dichloromethane without proper protective equipment. During that time, his renal function rapidly worsened and finally progressed to ESRD 10 years after the first clinical symptoms. The result of exposure assessment through reenactment of his work exceeded the occupational exposure limit for dichloromethane to a considerable degree. CONCLUSIONS: The causal association between occupational solvent exposure and IgAN is still unclear; therefore, this case report could be used as a basis to support the relevance of occupational solvent exposure to IgAN and/or its progression. Early intervention as well as close monitoring of laboratory workers exposed to various organic solvents is important to prevent or delay the progression of glomerulonephritis to ESRD in the occupational setting.
Adult ; Early Intervention (Education) ; Epidemiologic Studies ; Follow-Up Studies ; Glomerulonephritis ; Glomerulonephritis, IGA* ; Hematuria ; Humans ; Immunoglobulin A* ; Kidney Failure, Chronic* ; Male ; Methylene Chloride ; Occupational Exposure ; Solvents ; Toluene

BACKGROUND: The ultimate goal of minimally invasive surgery to the cerebral lesions is the smallest possible approach with an optimal surgical results. We present our experience in the surgery for anterior circulation aneurysms by using trans-supraorbital approach. METHODS: Between December 1998 and September 1999 seventeen patients with nineteen anterior circulation aneurysms were operated on via trans-supraorbital approach. Through a 4 to 5 centimeters long eyebrow or wrinkle incision trans-supraorbital approach was performed making a 3x2 cm bone flap including the orbital roof and rim. Advantages, indication of the this approach are discussed and surgical results are presented. RESULTS: All aneurysm were clipped without remmant. Outcome evaluated by the Glasgow outcome scale at 3 months after surgery was as follows; good recovery in 14 patients, moderate disability in 2 patients, severe disability in 1 patients. There was no procedure-related complications in our series. CONCLUSION: The trans-supraorbital approach to anterior circulation aneurysms may be the alternative minimally invasive approach in selected aneurysmal subarachnoid hemorrhage patients.
Aneurysm* ; Eyebrows ; Glasgow Outcome Scale ; Humans ; Orbit ; Subarachnoid Hemorrhage ; Surgical Procedures, Minimally Invasive

Background: Ammonia and hydrogen sulfide are harmful gases generated during aerobic/anaerobic bacterial decomposition of livestock manure. We evaluated ammonia and hydrogen sulfide concentrations generated from workplaces at livestock farms and determined environmental factors influencing the gas concentrations. Methods: Five commercial swine farms and five poultry farms were selected for monitoring. Real-time monitors were used to measure the ammonia and hydrogen sulfide concentrations and environmental conditions during the manure-handling processes. Monitoring was conducted in the manure storage facility and composting facility. Information on the farm conditions was also collected through interview and walk-through survey. Results: The ammonia concentrations were significantly higher at the swine composting facilities (9.5–43.2 ppm) than at other manure-handling facilities at the swine and poultry farms, and high concentrations of hydrogen sulfide were identified during the manure agitation and mixing process at the swine manure storage facilities (6.9–19.5 ppm). At the poultry manure-handling facilities, the ammonia concentration was higher during the manure-handling processes (2.6–57.9 ppm), and very low hydrogen sulfide concentrations (0–3.4 ppm) were detected. The air temperature and relative humidity, volume of the facility, duration of manure storage, and the number of animals influenced the gas concentrations. Conclusion A high level of hazardous gases was generated during manure handling, and some levels increased up to risk levels that can threaten workers' health and safety. Some of the farm operational factors were also found to influence the gas levels. By controlling and improving these factors, it would be possible to protect workers' safety and health from occupational risks.