[Risk factors of coronary heart disease in various occupational groups. I. Analysis of risk factor incidence].

The subjects of investigation in a standard clinical conditions were 4 groups of workers: blast furnace workers (n = 121), operators (n = 131), persons from managic staff (n = 73) and monks (n = 81). In all subjects 8 factors enhancing ischemic heart disease were estimated: treating family history, habit of smoking, male sex, blood hypertension, obesity, increased cholesterol concentration in blood serum and small physical activity. It was found that investigated groups were significantly different as to frequency of occurrence of ischemic heart disease risk factors.

[Risk of coronary heart disease in metallurgy employees in light of prospective examinations].

The group of physical workers of metallurgic plant (average period of employment was 12.4 +/- 6.4 years) consisting of 1100 men aged from 20 to 59 years, was underwent double medical examination in 5 years interval in standard clinical conditions.

[Secretory function of the stomach in workers employed at petroleum prospecting].

A group of 100 petroleum miners exposed to noise and vibration at intensities surpassing admissible standards, were subjected to a study. In the subjects basic and maximum posthistamine gastric secretion was evaluated, then stomach and duodenum were examined radiologically. Peptic ulcer was diagnosed in 10% examined, i.