[The scientific legacy of N. D. Strazhesko in occupational pathology].

The author draws a parallel between pathogenetic mechanisms of those changes described by N. D. Strazhesko in different forms of pathology of the cardiovascular system and its disorders in different forms of occupational pathology caused by adverse impact on the organism of chemical, physical, biological, and other factors of the working environment and labour process.

[Clinical stages of lead intoxication].

The authors, on performing a critical analysis of reported data on clinical manifestations of lead intoxication, suggest that the initial manifestations thereof presenting as changes in no other indices but laboratory ones, be regarded as a preclinical stage. Aside from generally recognized concepts of "mild" and "prominent" stages in lead intoxication the authors consider it logical and expediant to introduce a moderately severe stage manifested by vegetosensory polyneuropathy, astheno-vegetative syndrome, dyskinesia of the biliary and intestinal tracts, spastic colitis. It is in this very stage of lead intoxication that the patient, to the author's thinking, is to be assigned to some other job where he/she will not be exposed to lead or other adverse occupational factors.

[Classification of pneumoconiosis].

The article presents a modern classification of pneumoconiosis taking account of the international classification and experience gained by specialists in this country.

[Exogenous allergic alveolitis in workers engaged in the manufacture of pepsin].

A case is reported of an affliction in a worker engaged in the production of enzyme powder-like drugs who in the course of his work over 30 years had been exposed to aerosols containing pepsin and hydrochloric acid. The lung X-ray disclosed pneumothorax, with the cardiovascular shadow and trachea displaced to the right. There were signs of myocardial hypoxia and pulmonary hypertension on the electrocardiogram.

[The effect of manufacturing factors in asphalt-bitumen plants on the health of the workers].

Comprehensive investigations designate to study the working conditions and health status of workers of asphalt-bitumen plants were conducted. Measurable in the breathing zone of workers of basic professions were toxic substances that have a toxic effect on the body (benzene, oil hydrocarbons, toluene, nitric, carbonic oxides, and benz(a)pyrene). There was noted a high incidence of abnormalities of the internal organs, with the cardiovascular and respiratory pathology ranking first in frequency to other disorders.