The purpose of the study is to assess changes in hemodynamic parameters in areas of the northern city (Khanty-Mansiysk Autonomous Okrug – Yugra) under the influence of extreme cold temperature. Determination of hemodynamic parameters was carried out by compression oscillometry method using the APKO-8-RITS-M circulatory parameters analyzer. Results: under the influence of extreme cold water, all subjects showed an increase in the values of systolic and mean arterial pressure and pulse pressure. There was an increase in cardiac output, stroke volume of blood, cardiac index and stroke index; significant differences in the dynamics of these indicators were revealed. For the majority of surveyed people (77.7%), engaged in winter swimming, a tendency to increase arterial stiffness under conditions of general cold stress was revealed. Conclusion: in general, the tolerance of extreme cold stress in men can be assessed as satisfactory, since on average there is an increase in cardiac output, largely due to stroke output; there is a correspondence between the actual resistance of peripheral vessels and the working specific peripheral resistance. Since there were no significant changes in the diameter of the brachial artery with an increase of pulse wave velocity after swimming in cold water, this suggests the preservation of the observed elastic properties of the vascular wall. Data obtained from a limited number of examined people indicate the possibility of identifying the initial stages of disorders of the elastic properties of the aorta using compression oscillometry and expanding the capabilities of early diagnosis of signs of aortic stiffness.
kompressionnaya oscillometriya, gemodinamicheskie pokazateli, morzhevanie, sever, adaptaciya
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