[Problems of interrupted pregnancy among working women]. / Problemi na nedoiznosvaneto sred raboteshtite zheni.

PIP: Literature on the relationship between the occupational exposure and interrupted pregnancy is reviewed. Analysis of the epidemiologic data in various European countries indicates an increase in the incidence of miscarriages from 3.8-10.5% among nonworking women to 5.2-15.2% among working women. The course and outcome of pregnancy is affected by the occupation, length of employment, type of work, exposure to hazardous chemicals, position during work, and microclimate at the work place. Complicated and interrupted pregnancies are the most frequent among the workers of the chemical industry. Exposure to benzene causes anemia, leukopenia and hemorrhage. Chronic exposure to low concentrations of tin increases the incidence of stillbirth. Phosphorus, arsenic, cadmium, barium, chlorine, chromium, gallium, and fluorine penetrate the placental barrier, accumulate in the embryonic tissues, and increase the antenatal and postnatal embryonic lethality. Genetic effects of chromium ar associated with increased frequency of chromosome aberrations. Other factors that have a detrimental effect on pregnancy include occupational vibration, exposure to ionizng radiation (incidence of spontaneous abortion among the personnel of radiology departments in Sofia, Bulgaria reaches 24%), exposure to pesticides, exposure to infectious diseases among the health personnel, and exposure to veterinary diseases among the agricultural workers and workers of the food processing industry.^ieng

[Industrial vibrations and their repercussions on the basic functions of the genital system in women]. / Proizvodstveni vibratsii i otrazhenieto im vurkhu osnovnite funktsii na polovata sistema u zhenata

PIP: The increase in socialist industrialization has seen the great increase in levels of industrial noise, as well as the increase of female industrial workers. The biological effects of vibrations depend on the frequency, amplitude, and duration of the vibration. The most unfavorable are those with a frequency of 100-250 and an amplitude of .005 mm. General vibrations over a prolonged period of time lead to a typical syndrome of vegetative dysfunction and angiodystonic effects on a neurological basis. In the cardiovascular system, these effects are normally in the form of spastic reactions and perinephritis. The genital system function is particularly sensitive to vibrative disruptions, increasing with the frequency of the vibrations (such as with vehicle operators). Menstrual dysfunction is the most common of such disruptions. The cardiac, nervous, and muscular types of anomalies are well documented. What is now encouraged is research into prophylatic measures to prevent such disruptions.^ieng