Based on the methods of the Brain Stroke Register, a study was made of epidemiology and risk factors (RF) of ischemic brain stroke (IBS) in one of the cities of the Middle Ob region, numbering 220 thousand population. Based on 615 cases of IBS, a noticeable rise of the disease incidence was revealed in a group of subjects aged 40-49 years as was a high level of the morbidity and mortality among persons over 60 years. Studies into RF discovered a high portion of arterial hypertension (75.1%), atherosclerosis (44.3%), aggravated heredity (28.6%), coronary heart disease (27.9%), alcohol abuse (17.9%). In 90.8% of cases, IBS developed in the presence of unfavorable fluctuations in atmospheric pressure, relative humidity, temperature, and the rate of air movement.
There are presented data about heavy metals as pollutants of the environment and the factors of environment-related diseases. There is given the brief information about the appearance of heavy metals in the environmental objects and the possible occurrence of diseases caused by trace elements deficiency in the region. There are discussed difficulties of the clinical and laboratory diagnosis, associated with general symptoms of many diseases and lack in the medical facilities the equipment for objective detection of heavy metals in human biosubstrates.
As many as 112 residents of a town in the North of the Tyumen region were examined for the clinical course of vertebral basilar stroke (VBS). The latter ones occurred in 22.9% of patients with ischemic stroke, treated at the neurological hospital. The age of 66% of patients did not exceed 60 years. In 40% of cases, VBS developed within the first 5 years of the living in the Tyumen region and were dependent to a definite measure on the regional meteofactors.