Acta Scientific Neurology (ASNE) (ISSN: 2582-1121)

Research Article Volume 5 Issue 1

Dopplerographic Assessment of Vertebral Arteries Hemodynamic in Atlantoaxial Instability

Ruslan R Abdullaiev*, Igor A Voronzhev, Rizvan Ya Abdullaiev and Nikolay F Posokhov

Kharkiv Medical Academy of Postgraduate Education, Ukraine

*Corresponding Author: Rizvan Yagubovich Abdullaiev, Department of Ultrasound Diagnostics, Kharkov Medical Academy of Postgraduate Education, Ukraine.

Received: November 25, 2021; Published: December 31, 2021


Background: Atlantoaxial instability during rotational head movements is often the cause of hemodynamic disturbances in the vertebral arteries.

Objective: Dopplerographic evaluation of blood flow parameters in vertebral arteries in patients with atlantoaxial instability.

Methods: Doppler ultrasonography of the vertebral arteries (VA) was performed in 36 patients with atlantoaxial instability. The maximum systolic velocity (Vs), end diastolic velocity (Vd), resistance index (RI) and minute flow volume (MFV) in the second and third segments of the VA in the neutral position, with ipsilateral and contralateral rotation of the head were determined.

Results: The RI in the left VA was highest during contralateral head rotation and amounted to 0.71 ± 0.03, which is significantly (P < 0.01) higher than in healthy individuals. The same trend in the dynamics of hemodynamic parameters was observed in the right vertebral artery. With contralateral rotation (turn left), Vs in the right VA was 54.9 ± 5.1 cm/sec, with ipsilateral rotation (turn right) - 37.4 ± 3.6 cm/sec (P lr <0.01), and in the comparative group - 47.8 ± 4.3 cm/sec. The RI in the right VA with contralateral head rotation was 0.70 ± 0.03, and with ipsilateral rotation it was 0.69 ± 0.03, which is significantly (P < 0.05) higher than in healthy individuals. PI had the highest value in the left VA during contralateral head rotation and was 1.05 ± 0.07, which is significantly (P < 0.05) higher than in healthy individuals. The smallest MFV was also recorded in the left VA during contralateral head rotation and was 92 ± 10 ml/min - significantly (P < 0.05) less than in healthy individuals

Conclusion: In atlantoaxial instability, rotational head movements lead to a deterioration in hemodynamic parameters in the third segment of the vertebral arteries in the form of a decrease in the minute volume of blood flow, an increase in resistance and pulsation indices. With ipsilateral rotation of the head, the blood flow velocity in the vertebral artery of the same name decreases, while during contralateral rotation, on the contrary, it increases. The difference in comparison between blood flow indicators on the opposite artery and the results of healthy individuals has a significant value.


Keywords: Hemodynamic; Vertebral Arteries; Cervical Spine


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Citation: Ruslan R Abdullaiev., et al. “Dopplerographic Assessment of Vertebral Arteries Hemodynamic in Atlantoaxial Instability". Acta Scientific Neurology 5.1 (2022): 42-46.


Copyright: © 2022 Ruslan R Abdullaiev., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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