LDF method capabilities in the estimation of age-related features of the microcirculation system functioning

Тихомирова, И. А.; Baboshina, N. V.; Terekhin, S. S.

doi:10.24884/1682-6655-2018-17-3-80-86

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…Thus, as studies have shown, in males and females there is a heterochrony of the values of MP and SD: at one age higher than the values of the studied females, and at anotherin young men. This fact reflects the general biological pattern of different maturation of the male and female body [14,15]. Thus, the values of MP from 17 to 19 years were higher in girls, in 20 years boys were ahead of this indicator, and at the age of 21 their values were almost the same.…”

Section: Research Resultsmentioning

confidence: 65%

Age dynamics of indicators of the microcirculation system in students according to laser dopler flowmetry

Gorna

Horban

2022

SR: BS

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The article is devoted to the problem of studying blood microcirculation in healthy individuals at different stages of ontogenesis. The aim of the study was to investigate the peculiarities of the skin blood flow in students aged 17-21. Materials and ways of the research. In order to study the functional state of blood microcirculation the method of laser Doppler flowmetry (LDF) was used. Results. Determination of the age dynamics of the tissue blood flow in subjects aged 17-21 years showed that the parameter of microcirculation in the subjects increased from minimal values at 17 years to maximal values at 21 years. In the female subjects, the value of the microcirculation parameter was higher at 17 years than in the male subjects, while the maximum perfusion value for girls was at 19 years and at 20 years in the male subjects. Assessment of the regulatory devices showed that the amplitude value of low-frequency oscillations in females fell at the age of 19 years and in males at 20 years. The maximal amplitude index of vasomotor oscillations was registered at the age of 19 years both for boys and girls. The amplitude of vasomotor oscillations in the high-frequency range varied in both girls and boys. Three types of LDF-grams were identified among the young adolescents: aperiodic LDF-grams, which correspond to normoemic type of microcirculation, monotonous low amplitude LDF-grams, which correspond to hypooemic type of microcirculation, sinusoidal LDF-grams, which correspond to hyperemic type of microcirculation. Conclusions. As many studies have shown, the heterochronicity of values of blood microcirculation indices is preserved in male and female subjects: in one age section the indices are higher in females, in the other one – in adolescents. This fact reflects the general biological regularity of different maturation of male and female organisms

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Section: Research Resultsmentioning

confidence: 65%

Age dynamics of indicators of the microcirculation system in students according to laser dopler flowmetry

Gorna

Horban

2022

SR: BS

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“…Эти показатели закономерно ниже на нижних конечностях по сравнению с таковыми на верхних конечностях, независимо от гендерных различий обследованных детей. Полученные данные совпадают с результатами других исследователей, определявших состояние микроциркуляции в различных сегментах верхних и нижних конечностей [18,19]. Более низкие значения ПМ на нижних конечностях обусловлены тем, что они находятся в иных гемодинамических условиях, по сравнению с верхними.…”

Section: результаты исследования и их обсуждениеunclassified

“…Обращает на себя внимание крайне низкая асимметрия ПМ на стопах как у мальчиков, так и у девочек. С одной стороны, это свидетельствует еще о незрелости механизмов модуляции тканевого кровотока у детей 6-7 лет [9,10,19], а с другой -о том, что асимметрия показателей микроциркуляции в дистальных сегментах конечностей во многом может зависеть от разной физиологической нагрузки на них [20]. Известны попытки объяснить причину лево-правосторонней асимметрии показателей микроциркуляции, исходя из асимметрии хиральных характеристик сосудов симметричных органов [21], однако это требует еще дополнительных исследований для обоснования возможности применения математического аппарата теории хаоса для определения степени хаотичности флаксмоций.…”

Section: результаты исследования и их обсуждениеunclassified

Laser doppler flowmetry assessment of microcirculation in children of 6–7 years old

Kozlov

Sakharov

Гурова

et al. 2021

Regional blood circulation and microcirculation

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Introduction. The state of the blood flow within the capillaries and close blood vessels is highly important in practice for the revealing of pathogenetic mechanisms of both systemic and local circulatory disorders. Aim of the study was to define the parameters of microcirculation and the level of blood flow fluctuations (flux) in the distal segments of upper and lower limbs (in fingers of hands and toes of feet) in children of 6–7 years old; and to describe the possible differences in the mechanisms of blood flow modulation in boys and girls. Materials and methods. Skin microcirculation was assessed in middle fingers of hands and great toes of feet in children of 6-7 years old (14 girls and 7 boys in prone position) by means of laser doppler flowmetry. Results. The ranges for parameters of microcirculation (PM) for distal segments of upper and lower limbs in children of mentioned age group were defined, also it was shown that the PM are significantly lower in the lower limbs comparing to those of the upper limbs (both in groups of girls and boys). Asymmetry of PM in the feet was not found; the features of right hand-left hand asymmetry for PM in girls and boys are described. The analysis of modulation of blood flow fluctuations (fluxmotions) of different frequencies showed the profound role of vasomotor (myogenic) rhythm for regulation of microcirculation. Conclusion. Increased neurogenic influences on the modulation of fluxmotions in girls of 6-7 years old may be an evidence of the ongoing development of the mechanisms of blood flow regulation, particularly the association with the growth rate of girls is possible.

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“…The cardiovascular system performs integrative functions in the body and influences the functioning of other body systems. Studies of regulation mechanisms at different levels of the circulatory system in children depending on their gender and age can serve to solve the issues of correction in cases of blood flow disorders [4,8]. The study of tissue blood flow, including capillaroscopy [3,6] and laser Doppler flowmetry [1,2] are of great importance.…”

Section: Introductionmentioning

confidence: 99%

Complex assessment of parameters of central hemodynamics and microcirculation in children of 6-7 years old

Kozlov,

Gurova,

Sakharov

2023

E3S Web Conf.

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The paper presents the results of a comprehensive assessment of central hemodynamic and microcirculation indices in the skin of upper and lower limbs in 6–7-year-old children. 14 girls and 7 boys were examined using laser Doppler flowmetry methods (the LASMA-PF device, allowing simultaneous recording by four sensors) and the analysis of heart rate variability ("Varicard"). The parameters characterizing microcirculation in the limbs were determined and the signs of the appearing functional asymmetry of the upper limbs, as well as the differences in the mechanisms of modulation of cutaneous blood flow in boys and girls were revealed. The estimation of heart rate variability reveals the signs of girls' inclination to sympathotony and boys' inclination to vagotony at the given age. It was marked that central regulation mechanisms have the greater contribution to cardiac rhythm formation in girls. The data obtained testify to the fact that age-related changes at different levels of the cardiovascular system and regulation mechanisms occur somewhat earlier in girls than in boys.

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LDF method capabilities in the estimation of age-related features of the microcirculation system functioning

Cited by 8 publications

References 11 publications

Age dynamics of indicators of the microcirculation system in students according to laser dopler flowmetry

Age dynamics of indicators of the microcirculation system in students according to laser dopler flowmetry

Laser doppler flowmetry assessment of microcirculation in children of 6–7 years old

Complex assessment of parameters of central hemodynamics and microcirculation in children of 6-7 years old

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