title: [The microcirculatory blood flow and autonomic regulation's functional state in young people with different levels of subjectively experienced psychological stress].
abstract: A comprehensive comparative analysis of hemodynamics, microcirculation (the method of laser Doppler flowmetry with occlusal probe and the optical tissue oxymetry), blood circulation neuro-humoral regulation (analysis of heart rate variability - HRV) between almost healthy young people with different levels of subjectively experienced emotional stress is given. Depending on the degree of everyday stress (acute and/or chronic) the character of neuro-autonomic regulation of blood circulation, as well as the state of the microcirculatory blood flow and its regulation are substantially different. Moderate stress is accompanied sympathetic-parasympathetic regulatory mechanisms co-activation with augmented HRV baroreflex regulation circuits that compensate hemodynamic changes and is not accompanied by hypertensive reactions. An increase in the activity of neurogenic and myogenic tone microhemodynamics in the examinees with moderate stress is discovered, which determines a high probability of blood shunting in tested tissue and decrease of relative oxygen extraction. Moderate levels of stress are also associated with increase in a latency of post-occlusive vasoreactive hyperemia, which is considered to be an initial sign of the endothelium-mediated dysfunction of microcirculation.
authors.forename: O S
authors.initials: OS
authors.lastname: Glazachev
authors.forename: E N
authors.initials: EN
authors.lastname: Dudnik
mesh_terms: D001341:Autonomic Nervous System / Q000503:physiopathology*; D017704:Baroreflex; D001783:Blood Flow Velocity; D006339:Heart Rate; D006801:Humans; D008297:Male; D008833:Microcirculation; D013315:Stress, Psychological / Q000503:physiopathology*; D055815:Young Adult