AGE SPECIFIC FEATURES OF REOENCEPHALOGRAPHY ASSOCIATED WITH RESPIRATORY PHASES

Abstract

The article presents the results of a study on the cerebral hemodynamics of residents of the Volgograd region (165 respondents: 18–35 years old; 50–55 years; 56–60 years and over 61 years), making it possible to identify the parameters that are the most informative for assessing of blood supply disorders of the brain. Objective: to study the age features of cerebral blood circulation connected with breath phases. Evaluation of the functional state of the cerebral hemodynamics was carried out on the basis of comprehensive studies of blood supply to the brain (rest and against the background of respiratory test) using the method of reoencephalography. The reoencephalographic examination was performed in 4 leads (FM, OM left hemisphere; FM, OM right hemisphere). Indicators were registered: integral index of pulse filling, amplitude-frequency index, rheographic index, time of propagation of the rheographic wave, average vessel filling rate, venous outflow, dicrotic index, diastolic index. Decrease in total pulse blood filling of the brain at respondents of 50–55 years is revealed. In the dynamics of respiratory test myogenic reactions of vasoconstriction of resistive arteries of the brain in people of older age (50–55 years and older) are slightly expressed. The limit of vasoconstrictor reactions caused by the aging of the body is the cause of deterioration of the conditions of regional blood outflow. The inconsistency of the ratio of regional blood flow to its outflow is a marker of the reduction of adaptive reactions of the circulatory system of people over 50 years of age with an increase in venous pressure in the upper vena cava system. The information value, efficiency and safety of the reographic study at rest and against the background of respiratory test allows it to be recommended for inclusion in the plan of dispensary observations, especially those over 50 years of age.