북한 환경보건 현황 추론

정해관 한국환경보건학회 2018 한국환경보건학회 학술대회 자료집 Vol.2018 No.2

세상을 향한 분노의 폭발

정해관,김대현,이지연 한국화재조사학회 2019 한국화재조사학회 학술대회 Vol.2019 No.11

Unrecognized Bomb Hidden in the Babies’ Room: Fatal Pulmonary Damage Related with Use of Biocide in Humidifiers

정해관,하미나,이종현 환경독성보건학회 2012 환경독성보건학회지 Vol.27 No.-

특별기고-좀 더 아름다운 환경을

정해관,Jeong, Hae-Gwan 환경보전협회 1984 환경정보 Vol.6 No.10

1995년 포항시에서 발생한 콜레라 유행에 관한 역학 조사

정해관,최병순,김익중,임현술 東國大學校 嶺南地域發展硏究所 1996 地域發展硏究 Vol.2 No.1

일부 지역 도로관리 종사자에서 발견된 흉부 X선상 소음영 소견에 관한 조사

정해관,임현술,최익한,이원재,이현경 동국대학교 경주대학 1993 東國論集 Vol.12 No.-

Authors examined 135 workers(133 males and 2 females) employed in a local road construction and maintenance office lacated in the Pohang area to investigate the presence of pneumoconiosis cases among them. Examination consisted of questionnaire survey, physical examination and chest radiograph. Results are as follows ; 1. Of 135 workers, 8 cases(5.9%) were found to have small opacities of category 0/1 or more on chest radiogtaph. These cases were all males and prevalence was highest in group with age 50 or more(11.1% 3 out of 27 workers) and in froup with 5 to 9 years of employment(9.5%, 4 out of 42 workers). Small Opacities were found only in field workers(8.9%, 8 out of 90 workers) and prevalence of small opacities by job title was 8.8% in overload watchmen(3 out of 34 workers), 8.2% in road sweepers, road repair and maintenance workers(5 out of 56 workers). 2. Prevalence of small opacities on chest radiograph was higher in dusty, outdoor jobs than non-dusty jobs and the difference was statistically significant(P<0.05) 3. There was no statistically significant difference between those with radiological appearance of small opacities and normal subjects in age, educational level, duration of employment, previous dust exposure, past history of respiratory illness and clinical symptoms(P>0.05). 4. Of 8 cases with small opacities on chest radiograph, 1 case had small opacity of category 1/0(s/s) and the other 7 cases had small opacities of category 0/1. Two cases had past history of pulmonary tuberculosis, but radiologic findings were not consistent with tuberculosis. Two cases with less than 5 years of employment had previous history of dust exposure. Although specific etiologic factors were not clear with this study alone, authors suspected that specific geological factors in the Pohang area(soils rich in diatomaceous earth, bentonite and fullers' earth etc.) may have some role in development of small opacities. Above results suggests that follow up investigation for further development and progression of pneumoconiosis and effective measures to prevent dust exposure of road workers are needed.

일개 연탄공장 주변 지역주민들의 건강실태에 관한 조사

정해관,임현술 동국대학교 경주대학 1992 東國論集 Vol.11 No.-

Authors studied the effect of environmental coal dust contamination on the health status of inhabitants around a briquet factory and attempted to find out new cases of pneumoconiosis in this area. questionnaire survey was done on 2,002 persons of 497 households in Sangbong 1, 2-dong area within 1km distance from the briquet factory. On the basis of questionnaire survey, physical examination was done and chest X-ray was taken on 87 persons with risk of pneumoconiosis. Results are as follows : 1. questionnaire survey a. Respiratoy symptoms complained were coal dust expectoration(22.3%), sorethroat(21.1%), chest pain(15.7%), rhinorrhea(13.3%), cough(13.0%) and dyspnea(11.7%). Other symptoms complained were musculoskeletal, ophthalmological, cardiovascular, gastrointestinal, neuropsychiatric and dermatological in order. b. Inhabitants living within 500 meters distance from the factory complained more respiratory symptoms than those living outside this area. complaints of coal dust expectoration and frequent URI were more frequent in those living within 500 meters from the factory than those living outside(P<0.05). c. In surveyed population, incidence of acute illness was 108.6 spells and incidence of respiratory illness was 80.7 spells per 1,000 persons. But distance from factory and duration of residency in this area were not related to the incidence of acute illness. Admission rate was 40.6 spells per 1,000 persons in a year and there were 23 deaths during 3 years. 2. Mass examination. a. On chest X-ray, 3 cases of pneumoconiosis and 3 cases of suspected pneumoconiosis were found among 87 persons examined. b. Among them, a case of pneumoconiosis and a case of suspected pneumoconiosis had had occupational exposure history to coal dust. It was assumed that in the other 4 cases, their pneumoconiosis was related to their environmental coal dust exposure. c. 6 cases lived from 6 to 33 years in that area and away from 200 to 700 meters' distance from the factory.

환경독성보건학회의 새로운 출발에 즈음하여

정해관,정규혁 환경독성보건학회 2010 환경독성보건학회지 Vol.25 No.2

근로자 건강진단시 간기능 이상자의 정밀검사항목 개선을 위한 조사연구

정해관,임현술,김규회,Cheong, Hae-Kwan,Lim, Hyun-Sul,Kim, Gyu-Hoi 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.4

Workers' periodic health examination is the main tools used to manage the health problems of most workers in Korea. The most common health problem found in workers' periodic health examination is liver disorder. Liver disorder is also one of the most common health problems in general population and one of the leading causes of mortality in adult population. Regulation proposed by government (No. 207, Ministry of Labor, 1992) defines the criteria for selection of workers with the liver dysfunction for further evaluative examination and the examination items used for diagnosis of the workers with liver dysfunction. This study was designed to evaluate the proficiency of each examination items presently defined in Regulation and propose the optimal examination items for detection of the liver disorders found by workers' periodic health examination. Study subjects are 186 workers with abnormal liver function tests in screening examination of workers' periodic health examination. Questionnaire survey including past history of liver disorder, drinking history, height and weight was done. Physical examination by physician, routine test items defined by Regulation (SGOT, SGPT, $\gamma$-GTP, protein, albumin, total and direct bilirubin, alkaline phosphatase, $\alpha$-feto protein, HBsAg and anti-HBs), anti-HCV antibody test and liver ultrasonography were done. Results are as follows; 1. Result of evaluative examination utilizing only the items defined in Regulation was; There were 75 workers with suspected live. disorder(40.3%), 63 with no liver dysfunction (33.9%), 13 with suspected hepatitis B(7.0%), 10 workers with hepatitis B(5.4%), 10 workers with hepatitis B carrier state(5.4%), 10 with alcoholic liver disorders(5.4%), 5 with fatty liver(2.7%). When alternative diagnostic criteria applying additional examination items (drinking history, body mass index, anti-HCV antibody and ultrasonography) diagnosability of liver disorder was increased. When all four items were included, final results were; 23 workers (17.8%) with hepatitis B (10 carriers, 13 suspects and 10 hepatitis B), 10 (5.4%) with hepatitis C(4 carriers, 5 suspects and 1 hepatitis C), 13(7.0%) with alcoholic liver disorder, 45(24.2%) with fatty liver (40 suspects, 5 fatty liver), 410%) with suspected liver disorders and 44 (23.7%) with normal liver. 2. Of examination items defined by Regulation, only SGOT, SGPT, $\gamma$-GTP and HBsAg were significantly different in abnormal rate and mean value, and all other laboratory findings did not showed significant difference between two groups. Drinking history, body mass index and anti-HCV antibody test which are the items that authors included in this study, also showed significant difference between two groups. Utilization of body mass index (BMI) for abnormal liver function group in diagnosis of fatty liver had high specificity (97.6%) but sensitivity (22.3%) was low. Therefore we suggest that SGOT, SGPT, $\gamma$-GTP, HBsAg, alcohol drinking history, BMI and anti-HCV Ab were useful for diagnosis of liver disorders among worker's periodic health examination.

화학공장 근로자들의 간기능 이상 유병률 및 위험인자에 관한 연구

정해관,김정순,Cheong, Hae-Kwan,Kim, Joung-Soon 대한예방의학회 1997 예방의학회지 Vol.30 No.1

The object of this study is to evaluate the possibility of chemical-induced liver disorder among workers exposed to various chemicals and to classify the the liver function abnormalities by causes and to analyse the risk factors for each liver disorders. A cross-sectional study including questionnaire survey, physical examination, laboratory tests and ultrasonography of liver was conducted on 1,126 workers, 459 workers in a coal chemical plant(company A) and 667 workers in an insulation material manufacturing factory(company B). An industrial hygienist reviewed the chemicals used in both companies and evaluated the work environments to classify the workers by chemical exposure semiquantitatively. The results are as follows: 1. Of 459 workers in company A, 83 workers(18.1%) are classified as nonexposed, group 163(35,5%) as short-term exposure group, 155(33.8%) as intermediately exposed group and 58(12.6%) as long-term exposed group bared on the mean daily exposure to hepatotoxic chemicals evaluated by an industrial hygienist. Of 667 workers in company B, 484(72.6%) workers were classified as nonexposed and 183(35.5%) as exposed group. 2. Workers with SGOT level higher than 40 IU/l were (10.0%) in company A and 77(11.5%) in company 3, and those with SGPT level higher than 35 IU/l were 118(25.7%) in company A and 198(29.7%) in company B. The differences were not significant between companies and between exposure groups(p>0.05). Workers with $\gamma-GT$ level higher than 62 IU/l were 29(6.3%) in company A and 77(11.5%) in company B (p<0.01). The difference between exposure groups was not significant(p>0.05) within companies. Workers with liver function abnormalities(defined as SGOT higher than 40 IU/l or SGPT higher than 35 IU/l) were 338(30.0%) among 1,126 workers. Of 338 workers with live. function abnormalities 139(12.3%) had fatty liver by ultrasonography, 79(7.0%) had alcoholic liver(defined as workers with liver function abnormalities with weekly alcohol consumption greater than 280 g for more than 5 years), 54(4.8%) had hepatitis B, 12(1.1%) had hepatitis C and the other 114(33.7%) was not otherwise classified. Prevalences of alcoholic liver and fatty liver were significantly lower in company A(prevalence ratio 0.24 for alcoholic liver, p<0.001, prevalence ratio 0.76 for fatty liver, p<0.05) but prevalences of liver disorders between exposure groups within companies were not significant(p>0.05). 3. Summary prevalence ratios(SPR) of live. function abnormalities, fatty live. and other liver disorders, adjusted by age and company were not significantly higher in exposed group in any chemicals(p>0.05) but in some chemicals, SPRs were significantly lower. 4. On simple analysis of risk factors for liver function abnormalities, prevalence odds ratio(POR) of those with age between 30 and 39 was 1.54(p<0.01) and those with age ever 40 was 1.51(p<0.01). POR of those with histories of liver disorders and general anesthesia was 1.77(p<0.001) and 4.02 for those with overweight and 6.23 for those with obesity, defined by body mass index(p<0.001). 5. On logistic regression analysis, risk factors of liver function abnormality were fatty liver(POR 2.92 for grade 1, 12.15 for grade 2), presence of hepatitis B surface antigen(POR 3.62) and obesity(POR 5.38 for overweight and 16.52 for obesity). Presence of hepatitis B surface antigen(POR 0.18) was the only preventive facto. of fatty live. Company(POR 0.30) and obesity(POR 2.49 for overweight, 4.52 for obesity) were related to the alcoholic live. Obesity(POR 2.94 for overweight) was the only significant risk factor of hepatitis B and there was no significant risk factor for liver function abnormality not otherwise classified. It is concluded that the evidence of liver disorder related with chemical exposure is not evident in these factories. It is also postulated that fatty liver and alcoholic liver is most common causes of liver function abnormalities among workers and effort for w