Open AccessSOME OF THE ULTRASOUND FEATURES OF THE SECOND SEGMENT OF THE VERTEBRAL ARTERIES AND THEIR HEMODYAMICS PARAMETERS IN HEALTHY PERSONS AND IN PATIENTS WITH DIFFERENT STAGES OF ARTERIAL HYPERTENSION
Author(s) -
Y. G. Gaevskiy,
В. Р. Вебер,
V. Zakharova,
I. V. Yarosvet,
Mikhail M. Beregov
Publication year - 2019
Publication title -
lučevaâ diagnostika i terapiâ
Language(s) - English
Resource type - Journals
eISSN - 2079-5351
pISSN - 2079-5343
DOI - 10.22328/2079-5343-2019-10-1-33-38
Subject(s) - medicine , vertebral artery , hemodynamics , ultrasound , blood flow , diastole , cardiology , anatomy , blood pressure , radiology
In order to improve the capabilities of duplex Doppler ultrasound of morphofunctional features of vertebral arteries we investigated duplex Doppler ultrasound of major neck vessels in 279 patients with stages 1–2 arterial hypertension (149 patients with stage 1 hypertension and 130 patients with stage 2 hypertension). The control group included 196 subjects with normal blood pressure values. Duplex Doppler ultrasound included the following hemodynamic parameters of vertebral arteries: peak systolic velocity, end-diastolic velocity, time-averaged mean velocity, pulsatility index, resistance index, and also the asymmetry of vertebral arteries diameters — the ratio of the diameter of the left vertebral artery to the diameter of the right vertebral artery; volumetric blood flow. The reactivity of the vertebral arteries was studied by assessing the response of hemodynamic parameters to head rotation. The severity of muscle sleeve fibrosis surrounding the vertebral arteries in the C5–C6 segments of the cervical spine was evaluated at 7 degrees (from 0 to 6). The study found differences in the morphology of the vertebral arteries as well as the ultrasound parameters of the muscle sleeve surrounding the vertebral arteries in the C5–C6 segments but the greatest differences were observed precisely in the indicator of the reactivity of the vertebral arteries on head rotation. Reactivity indicators were expressed as changes in the parameters of pulsatility index and resistance index. The results of the study showed that early changes in the muscle sleeve surrounding the vertebral arteries in the C5–C6 segments lead to changes in the diameters of the vertebral arteries and their reactivity during further traumatization of vessels and sympathetic fibers caused by rotation of the head. Reactive indicators express to a far greater degree on the left vertebral artery and their progression increase with the progression of hypertension occurred.