- The Type of Anemia in Organic Solvent Workers by MCV and RDW.
-
S J Kim, S H Ohm, D H Kim, C U Lee, J H Chun, S C Kim, K T Pae
-
Korean J Prev Med. 1992;25(2):162-171.
-
-
-
 Abstract
 PDF
- The hematologic effect by low-concentration and repeated exposure to mixed organic solvent remains obscure. This study was performed to evaluate the hematologic effect by mixed organic solvent exposure, especially on the type of anemia by mean corpuscular volume(MCV) and red blood cell distribution width(RDW). The subject were 64 organic solvent workers(male 4, female 60) and 78 general workers(male 18, female 60) who showed anemic tendency in worker's health examination which carried out by Pusan Paik Hospital from January to December, 1988. The author gained some hematologic findings (hemoglobin, hematocrit, RBC, WBC, MCV, MCHC, platelet count, ESR, RDW) from auto-analysis method by coulter counter S plus IV, and compared the type of anemia by MCV and RDW. In the pilot study for estimating the prevalence of anemia according to the type of job, the prevalence rate was higher in organic solvent workers than in public officials as 10.9% and 4.1% respectively. There were statistical significance in the value of hemoglobin, hematocrit, MCV, MCHC, platelet count, ESR, RDW between the two study groups with more severe anemic tendency in organic solvent workers. The type of anemia in organic solvent workers was microcytic and anisocytic with the mean value of 68.28+/-8.3fL of MCV and 19.1+/-4.0% of RDW.
-
Summary
- A Study on the Level of Air Pollution and Noise in Pusan Area.
-
G L Cho, D H Moon, J Lee, H R Sin, Y W Kim, H J Park, K T Pae
-
Korean J Prev Med. 1990;23(4):391-403.
-
-
-
Abstract
PDF
- In order to assess the degree of atomospheric pollution and noise and to contribute the health improvement of residents in Pusan, the author measured the levels of CO, SO2, NO2, TSP, HCHO and noise in 8 areas(industrial, residential and park areas) from January to March in 1990. The results were as follows: 1. Sasang industrial area was significantly higher (2.85 +/- 0.84ppm) in the average concentration of CO than other areas. However, there no areas to affect the human body in terms of CO concentration. 2. In general, industrial area was significantly higher (0.134 +/- 0.084ppm) in the average concentration of SO2, than other areas, and it was the lowest (0.009 +/- 0.005ppm) in the Namchon-dong area. 3. Industrial (0.033 +/- 0.009ppm) and residential area (0.029 +/- 0.004ppm) were significantly higher in the average concentration of NO2 than Park area (0.009 +/-0.001ppm). However, there were no areas to affect the human body in terms of NO2 concentration. 4. Sasang industrial area was the highest (580.4 +/- 415.26 microgram/m3) at the average concentration of TSP and Hae-Un Dae area was the lowest (97.22 +/- 37.86 microgram/m3). But TSP concentration showed the level to affect the human body in most areas. 5. Industrial area was significantly higher (2.25 +/-1.15ppb) in the average concentration of HCHO than residential (1.13 +/- 0.25ppb) and park area (1.33 +/- 0.20ppb). 6. Industrial area was significantly higher (77.28 +/- 6.92dB(A)) in the level of noise than residential (65.77 +/- 3.76dB(A)) and park area (64.65 +/- 5.25dB(A)). In comparison with regional Standard Noise Level, however, the average noise level of residential and park area was higher than that of the Standard. In general, the level of pollution of industrial complex areas was relatively higher than those of residential and park areas. Among the industrial areas, sasang area was worst in most items. Both SO2, and TSP showed the level to affect the human body in most of studied areas. It is necessary to install a new Air Quality Standard for HCHO to screen our environmental pollution.
-
Summary
- Chest Radiological Changes after Cessation and Decrease of Exposure to Welding Fume in Shipyard Welders.
-
H S Sohn, J T Lee, H R Shin, C U Lee, K T Pae, H J Park, Y W Kim
-
Korean J Prev Med. 1989;22(3):328-336.
-
-
-
Abstract
PDF
- 27 shipyard welders were diagnosed as pneumoconiosis and suspected pneumoconiosis(1976 - 1988) by chest radiographs and were observed over three years. 27 welders were divided into three groups by the state of exposure to welding fume i.e. cessation, decrease or continuity of exposure. And we observed the changing pattern of the chest radiographs of 27 welders with the passage of time. The results were as follows; 1. Group I (ceased exposure to welding fume) were 10 cases: suspected pneumoconiosis, 7 cases: pneumoconiosis). Chest radiographs of all cases were improved. The shape and size of small opacities was improved in 6 cases(85.7%) and did not changed in 1 case(14.3%) out of 7 pneumoconiosis welders. 2. Group II (decreased exposure to welding fume) were 5 cases(2 cases: suspected pneumoconiosis, 3 cases: pneumoconiosis). Chest radiographs were progressed in 2 cases(40%), did not changed in 1 case(20%), were improved in 2 cases(40%) out of 5 cases. The shaped and size of small opacities was progressed in 1 case(33.3%) and was improved in 2 cases(66.7%) out of 3 pneumoconiosis welders. 3. Group III (continued exposure to welding fume) were 12 cases(1 case: suspected pneumoconiosis, 11 cases: pneumoconiosis). Chest radiographs were progressed in 9 cases(75%), did not changed in 3 cases(25%) out of 12 cases. The shape and size opacities was progressed in 1 case(9.1%) and did not changed in 10 cases(90.9%) out of 11 pneumoconiosis welders. 4. The average duration for development into suspected pneumoconiosis was 6.6 years and for progression of each one category after that was 2.2 years(p<0.01). The radiological appearance of pneumoconiosis had disappeared or decreased after cessation of exposure to the welding fume. So that, early detection and control e.g., change of department of pneumoconiosis of welders by screening program will be important for medical surveillance of welders.
-
Summary
- The Epidemiologial Study on the Welders' Pneumoconiosis among Shipyard Welders in Pusan Area.
-
C U Lee, G Y Cho, S C Kim, K T Pae, Y W Kim, I G Yun
-
Korean J Prev Med. 1989;22(1):153-161.
-
-
-
Abstract
PDF
- Authors studied on the prevalence of 94 cases of pneumoconiosis who were found out through the screening test on 1,062 workers engaged in welding process at 36 shipyard in Pusan area from March 1st, 1986 to November 30th, 1986. The result were as follows; 1. Dust concentration was measured 4.49+/-0.54 mg/m3 in the small scale shipyard while it was 6.25+/-1.08 mg/m3 in the large one. 2. The prevalence of welder's lung was 8.9% (male:8.5%, female:12.0%) and this is consist of 4.9% suspected pneumoconiosis and 4.0% pneumoconiosis more than category 1/0. 3. The prevalence was significantly increased according to the duration of dust exposure (p<0.05), and it showed the increasing tendency by the age group. 4. The prevalence was significantly higher in the large scale shipyard than is the small scale one(p<0.01). 5. The type and shape of opacities were 71.4% of p type and 28.6% of q type, however no pneumoconiosis with r type observed in this study. 6. The main subjective symptoms were the sputum(29.8%), coughing(25.5%), shortness of breath(20.2%), fatigue(6.4%), and chest pain(5.3%). In other hand, 57.4% of pneumoconiosis were asymptomatic. 7. The prevalence of pulmonary tuberculosis was radiologically 1.7% in all subjects including 5.3% in pneumoconiosis and 1.3% in no pneumoconiosis(p<0.01).
-
Summary
- A study on the properities of the paralytic shellfish poison.
-
J T Lee, H S Shon, D H Moon, C U Lee, S C Kim, K T Pae, J Y Kim, Y W Kim, N W Paik
-
Korean J Prev Med. 1988;21(1):163-171.
-
-
-
Abstract
PDF
- The paralytic shellfish poisoning was occurred among 25 laborers who worked at breaking-up of ships in Pusan for 5 days from March 29 to April 2 of 1986. For the purpose of accurately defining the paralytic shellfish poison(PSP), the authors carried out mouse bioassay and chemical analysis. The results were summarized as follows: 1. The mean amount of paralytic shellfish toxin was 1,207.8 microgram per 100gm meat, and the mean death time of mouse was 5 minutes 16 second. 2. The properties of the PSP were mainly gonyautoxin group by chemical analysis(TLC, IR, 1H-NMR).
-
Summary
|
KSPM
