[The dynamics of the prevalence of the basic risk factors for IHD in men engaged in the expedition--duty-watch form of work at an oil-producing complex in western Siberia].

Monitoring of the main risk factors of ischemic heart disease was conducted in an ordered population of males aged 20-59. The examinees worked in expeditions engaged in oil production at the West Siberia oil fields. The prospective epidemiological survey lasted 3 years for the study population and 2 years for two representative comparison groups. The examination program involved filling WHO risk factor questionnaire, two measurements of arterial pressure, anthropometric examination, total blood cholesterol assay. Systolic pressure was found to increase upon service duration 2.9 and 4.3 years, diastolic pressure rose after 2.9 years of service, body mass index after 4.3 and 5.6 years. It is evident that preventive measures should be taken within 3 years of service in conditions of expedition work schedule.