Article
Along with the generally recognized indicators of the activity of the cardiovascular system (CCC), such as minute volume of blood circulation (MOK) and stroke volume of blood circulation (УОК), integral hemodynamic indicators characterizing the speed of blood flow and the distance traveled by blood through the arterial system after ventricular systole are of interest. Their assessment is relevant due to the possibility of their direct measurement using ultrasound methods in real time, in contrast to the assessment of the МОК and УОК, the values of which are calculated. The study of the features of the hemodynamic response to physical activity in persons with hearing impairments is of particular importance, due to the fact that the body of a hearing-impaired person developed in conditions of reduced motor activity.
The research purpose – assessment of integral hemodynamic parameters in girls with hearing impairments.
Methods of the research. Hemodynamic parameters were measured in real time using a SYSCOM 1-A ultrasound monitor in 16-20-year-old girls with varying degrees of hearing loss and in their peers without hearing impairment. We analyzed the following parameters of hemodynamics at rest and after dynamic exercise: integral of blood flow velocity (vti), distance per minute (MD).
Research results. A later recovery of MD and vti indices was revealed in girls with hearing impairments after dynamic exercise than in girls without hearing impairment.
Conclusion. The data obtained indicate a slower onset of response to dynamic load and a slow recovery of blood flow velocity in girls with hearing impairments. Differences in the dynamics of the values of integral indicators in the recovery period may indicate the peculiarities of the hemodynamic reaction of girls aged 16-20 with hearing impairment.
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