Clinical Physiology of Circulation

Chief Editor

Leo A. Bockeria, MD, PhD, DSc, Professor, Academician of Russian Academy of Sciences, President of Bakoulev National Medical Research Center for Cardiovascular Surgery


Assessment of arteriovenous imbalance in patients with internal carotid artery stenosis

Authors: Lovrikova M.A.1, Zadneprovskaya V.V.2

Company:
1 Oncological Dispensary, Birobidzhan, Russian Federation
2 Postgraduate Institute for public health workers; Khabarovsk, Russian Federation

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DOI: https://doi.org/10.24022/1814-6910-2025-22-2-171-176

UDC: 616.133.3-007.271

Link: Clinical Physiology of Blood Circulaiton. 2025; 22 (2): 171-176

Quote as: Lovrikova M.A., Zadneprovskaya V.V. Assessment of arteriovenous imbalance in patients with internal carotid artery stenosis. Clinical Physiology of Circulation. 2025; 22 (2): 171–176 (in Russ.). DOI: 10.24022/1814-6910- 2025-22-2-171-176

Received / Accepted:  22.05.2025 / 30.05.2025

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Abstract

The purpose of the study – assessment of focal arteriovenous imbalance in patients with internal carotid artery (ICA) stenosis.

Material and methods. Arterial inflow and venous outflow were studied in patients with varying degrees of ICA stenosis (n = 93) compared with a control group of people of comparable gender and age (n=31) without ICA stenosis. The control group (2) consisted of 32 people without ICA stenosis and with no signs of systemic and regional phlebohypertension.

Results. The majority of patients in all groups had an increase in venous pressure in the brachial vein. In the presence of severe carotid artery stenosis, arterial blood flow decreases, which is a natural reaction. The venous outflow in the horizontal position increases with an increase in the percentage of stenosis, while the outflow in the vertical position decreases.

Conclusion. With an increase in the percentage of ICA stenosis, there is a significant increase in venous outflow through the internal jugular veins (IJV) and vertebral veins (VV) in the horizontal position, and the total venous outflow decreases with verticalization.

About Authors

  • Marina A. Lovrikova, Ultrasonic Diagnostician; ORCID
  • Vera V. Zadneprovskaya, Cand. Med. Sci., Associate Professor; ORCID

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