Open AccessFeatures of human capillary blood flow on breathing by heated helio-oxygen mixtures
Author(s) -
A. V. Stroy,
D. V. Pukhnyak,
А. А. Танова,
С. А. Чеботов
Publication year - 2022
Publication title -
morskaâ medicina
Language(s) - English
Resource type - Journals
eISSN - 2587-7828
pISSN - 2413-5747
DOI - 10.22328/2413-5747-2022-8-1-49-55
Subject(s) - microcirculation , breathing , heliox , oxygen , blood flow , breathing gas , ventilation (architecture) , laser doppler velocimetry , room air distribution , chemistry , oxygenation , anesthesia , materials science , medicine , cardiology , thermodynamics , physics , organic chemistry
The purpose of the study : to assess the features of microcirculatory blood flow. Materials and methods . A comparative assessment of microcirculation by laser Doppler flowmetry was carried out in 19 male volunteers aged 20–25 years against the background of breathing heated to 40° C oxygen-nitrogen and helium-oxygen gas mixtures. Main results . Breathing with a heated oxygen-nitrogen mixture consisted in an increase (by approximately 25–35%) of the values of the integral indicator of microcirculation against the background of a decrease in its efficiency. Switching to breathing with a heated helium-oxygen mixture «HeliOx 25/75» in all examined persons also led to an increase in the volumetric velocity of the peripheral blood flow. However, the degree of increase in the indicator (by 35–45% compared with normal breathing conditions) turned out to be significantly more pronounced than it was during breathing with a heated oxygen-nitrogen mixture. In addition, when breathing «HeliOx 25/75», starting from about the 2 nd minute of breathing, an increase in the efficiency of microcirculation was observed due to an increase in the «contribution» to the blood flow reaction of its «active» (neuromyogenic) components.