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Degenerative Changes of Spine in Helicopter Pilots
변주현,김정원,정호중,심영주,김동규,최종경,임형준,김기찬 대한재활의학회 2013 Annals of Rehabilitation Medicine Vol.37 No.5
Objective To determine the relationship between whole body vibration (WBV) induced helicopter flights and degenerative changes of the cervical and lumbar spine.Methods We examined 186 helicopter pilots who were exposed to WBV and 94 military clerical workers at a military hospital. Questionnaires and interviews were completed for 164 of the 186 pilots (response rate, 88.2%) and 88 of the 94 clerical workers (response rate, 93.6%). Radiographic examinations of the cervical and the lumbar spines were performed after obtaining informed consent in both groups. Degenerative changes of the cervical and lumbar spines were determined using four radiographs per subject, and diagnosed by two independent, blinded radiologists. Results There was no significant difference in general and work-related characteristics except for flight hours and frequency between helicopter pilots and clerical workers. Degenerative changes in the cervical spine were significantly more prevalent in the helicopter pilots compared with control group. In the cervical spine multivariate model, accumulated flight hours (per 100 hours) was associated with degenerative changes. And in the lumbar spine multivariate model, accumulated flight hours (per 100 hours) and age were associated with degenerative changes. Conclusion Accumulated flight hours were associated with degenerative changes of the cervical and lumbar spines in helicopter pilots.
유기용제 노출에 따른 신발제조업체 근무 여성근로자들에서의 후천적 색각이상
변주현,이광영,김영기,고광욱,이용환 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.3
목적 : 복합유기용제에 노출되는 신발제조업체 근무 여성근로자들에서 유기용제 누적노출량과 후천성 색각이상 발현빈도간의 상관성을 조사하기 위해 본 연구를 실시하였다. 방법 : 신발제조업체 근무 여성근로자들 가운데 유기용제에 노출되는 85명과 유기용제에 노출되지 않는 근로자 88명을 대상으로 조사하였다. 조도가 표준화된 방에서 시력검사와 색각이상 검사를 실시하였다. 작업 부서를 접착, 사상 및 선처리 부서로 나누었고 작업 부서별로 현재노출량과 누적노출량을 구하였다. 결과 : 색각이상의 유병률은 노출군이 대조군보다 통계학적으로 유의하게 높았으며 (P=0.017). 유기용제 노출군 85명 가운데 후천적 색각이상인 청황색 색각이상자가 5명(5.9 %)이었다. 안증상도 노출군이 대조군보다 발생빈도가 높았으며 통계학적으로 유의한 차이를 보였다(P=0.001). 색 혼란지수에 영향을 줄 수 있는 변수들인 연령, 교육기간, 누적노출량 등은 유의한 변수로 나타나지 않았다. 결론 : 유기용제 노출군에서 색각이상의 유병률이 대조군보다 유의하게 높았으며, 특히 유기용제 노출군에서 후천적 색각이상인 청황색 색각이상도 발견되었다. 그러나 유기용제 누적노출량과 색 혼란지수와 유의한 연관성은 발견할 수 없었는데 이는 유기용제의 노출량이 너무 낮았으며, 근로자의 이직률 또한 놓아 누적노출량 계산을 위한 추적기간이 제한되었기 때문인 것으로 생각되며 앞으로 고농도 노출 근로자를 대상으로 연구를 하면 분명한 결과를 얻을 수 있을 것으로 기대된다. Objectives : This study was undertaken to investigate the relationship between color vision defects and occupational exposure to mixed organic solvents in women workers who were engaged in the shoe manufacturing industry. Methods : A total of 173 women workers were involved in this study, 85 of whom were exposed to mixed organic solvents and were defined as the exposed group, and 88 workers comprised the non-exposed control group. The patients were questioned as to their drinking history, the year in which they were exposed and whether they had eye symptoms of blureed vision, eye fatigue, and eye irritation. The exposed workers in the shoe manufacturing factory were engaged in 3 work areas which were pasting, trimming, and cleaning. Their Color vision was assessed using the Hahn's double 15 hue test under standard illumination and their current and cumulative exposure levels were measured. Results : The prevalence of color vision defect was 21.2% in the exposed group and 8.0% in the control group, and the blue-yellow defect was found to be 5.9% in the exposed group. The logistic regression for the acquired dyschromatopsia and color confusion index showed that there were no variables that had significant relationships. Eye symptoms were more frequently developed in the exposed group. Conclusions : There is a possibility of developing color vision defects when workers are exposed to mixed organic solvents. However, the results of the color confusion index showed that there was no significant relationship to the coumulative exposure level, because of the low exposure level and high occupational turn over rate of the workers. Because the workers in the present study were exposed to low level solvents it will be necessary to study workers exposed to higher levels of organic solvents.
변주현,박상수,황영희,국홍일 梨花女子大學校 醫科大學 醫科學硏究所 1980 EMJ (Ewha medical journal) Vol.3 No.4
The clinical studies were made on 500 cases of acne vulgaris who visited to Department of Dermatology, Ewha Womans University Hospital during from January, 1978 to June, 1980. The result were as followings; 1) Among 500 cases, 69(13.8%) were male patients, 431(66.2%) were female patients. 2) In the duration of the skin lesion from onset to be diagnosed, under 1 year was 63.0% (315 cases), and especially under 6 months was 50.4% (252 cases). 3) In the visiting frequency once was 38.4%(192 cases), and in the male was 42.0% (29 cases), and female was 37.8% (163 cases). 4) In the site of the skin lesion, face alone (90.0%), face and neck (3.8), face and chest (3.2%), face and back (2.0%), face and trunk (1.0%), were ordere. 5) In the factors affecting the severity of lesion, fatigue (26.8%), menstrual pentod (23.4%), gastrointestinal trouble (11.8%), cosmetics (9.0%), seasonal changes(5.4%), and unknown (23.6%) were revealed. 6) 309 cases having surgical treatment, 36.8% of once and 11.4% of twice were revealed.