ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

The Occupational Medical Forum presents questions of general interest received by the AOMA Committee on Occupational Medical Practice. Answers usually are prepared by the Committee, representing the composite best judgment of its members. Such replies do not necessarily represent an official position of the American Occupational Medical Association. In some cases, the responses will be prepared at the Committee's request by consultants with special qualifications in specific fields. Questioners are not named. Readers who wish to submit questions to the Committee should address inquiries to: Committee on Occupational Medical Practice, American Occupational Medical Association, 150 N. Wacker Drive, Chicago, IL 60606.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

Mortality is described in a cohort of 18,869 white males who were employed between 1943 and 1947 at a uranium conversion and enrichment plant in Oak Ridge, Tenn. Workers in certain departments (especially chemical workers) were exposed to high average air levels of uranium dust Based on deaths reported in 1974 by the Social Security Administration (SSA) and using mortality rates for U.S. white males, standardized mortality ratios (SMRs) for various causes in the entire cohort were generally less than 1.00. After correction for unascertained deaths and missing death certificates, the SMR for lung cancer was 1.22 (95% confidence limits, 1.10 and 1.36). SMRs for various causes, including lung cancer, did not tend to be higher in 8,345 workers employed in areas where uranium dust was present or in 4,008 of these 8,345 workers employed for one year or longer at the plant. Other causes of particular interest (i.e., bone cancer, leukemia, diseases of respiratory and genitourinary systems) did not exhibit high SMRs. The suggestive finding of the authors was an increased number of lung cancer deaths in a group of chemical workers hired at ≥ 45 years of age. Continued follow-up of the cohort is necessary for further evaluation of the long-term health effects of exposure to uranium.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

Between 7969 and 7972 diethylstilbestrol (DES) accounted for 25 instances of breast tenderness and enlargement in male chemical workers in a DES production area of a large chemical plant. A gas chromatographic analysis for urinary DES was performed at three spaced intervals over a 90-day work span. All full-time workers who wore air suits when necessary developed increasing levels of DES upon increasing days of exposure. At a certain range of excretion (40 μg/ml/24 hours) two workers became symptomatic. DES was also detected in one helper and in two individuals not directly connected with the area of known exposure. Although no federal standard for DES exists, the following evidence points to the actuality of hazardous levels of exposure: (1) there had been a persistent history of DES reactions year after year; (2) high urine levels and adverse reactions were found in workers participating in the medical studies of this evaluation; and (3) there was widespread DES contamination of buildings and equipment, extending as far away as the lunchroom in a separate building.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

A method has been developed for monitoring industrial workers and others exposed to environmental agents which may impair fertility. National birth probabilities specific for maternal birth cohort, age, parity, and race are used to derive expected fertility. Observed fertility is obtained by questionnaire. Standardized fertility ratios are computed for exposure and non-exposure periods and compared. The analytic techniques have been validated by applying the method to a group of 36 male factory employees working in an agricultural chemical division (ACD) where pesticides including the nematocide dibromochloropropane were formulated. Twelve of these employees in mid-1977 had been discovered to have severely depressed sperm counts related to occupational exposure. The standardized fertility ratio (SFR) computed from data available in mid-1977 for the period at risk from employment in the ACD (SFR = 0.75) was significantly lower than those derived for the entire not-at-risk period (SFR = 1.88) and the portion related to employment in other areas of the factory (SFR = 2.16). Similar differences also were evident from data available several years earlier, demonstrating that the surveillance technique would have been capable of detecting occupationally induced infertility among these workers in advance of the actual discovery date.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

A possible effect of chronic carbon disulfide exposure on the optic nerve was studied by giving the Farnsworth Munsell 100-Hue Test for color discrimination to 62 exposed and 40 nonexposed men. Carbon disulfide exposure did not relate to specific pattern defects in color discrimination, but impaired color discrimination occurred significantly more often in the exposed group than among the referents. The abnormal findings suggest an impairment in the receptiveness of the ganglion cells or demyelination of the optic nerve fibers.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

All of the 123 subjects of this study had been referred for treatment by their employers and 94% had been threatened with job loss unless their work performance improved. The employers and the subjects perceived equally intense levels of pressure placed upon the subjects to change drinking behavior when they entered treatment. Both perceived a significant drop in pressure during the year following treatment, with the subjects indicating more change than the employers. Drop in perceived pressure was directly related to treatment outcome. Implications for constructive confrontation as a motivational tool are discussed.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

The data available on mortality of the white population of the United States from 1940 to 1975 do not confirm the presence of an epidemic of cancer in our society. Overall death rates and non-respiratory cancer death rates are declining in these groups over a wide spectrum of ages for both sexes. Respiratory cancer death rates have been increasing, but appear to show a current decline in the younger age groups. The need for objective mortality data by specific cause of death and geographic area is evident. Measures to protect the environment should be undertaken within the context of a generally improving mortality experience of the U.S. population.

ISSN:0096-1736    

出版商:OVID    

年代:1981

数据来源: OVID