Research Article
Volume 13 Issue 4 - 2021
Role of Transcranial Dopplerography in Stroke
Abdullaiev RYa1*, Sysun LA1, Kostyukovskaya AE1, Yalynska TA2, Abdullaiev RR1 and Dudnyk VV3
1Kharkiv Medical Academy of Postgraduate Education, Ukraine
2Rasdiology Department Ukrainian Children’s Cardiac Center, Kyiv, Ukraine
3University of Leipzig, Medical Faculty, Germany
*Corresponding Author: Abdullaiev RYa, Kharkiv Medical Academy of Postgraduate Education, Ukraine.
Received: January 25, 2021; Published: March 31, 2021




Abstract

Introduction: Stroke is the second leading cause of disability in individuals with cardiovascular disease. Assessment of the state of cerebral hemodynamics is important for the selection of a method for treating acute stroke. Transcranial dopplerometry allows non-invasive visualization of the great vessels of the circle of Willis and obtain information on the quantitative parameters of blood flow in triplex mode.

Objective: To assess the quantitative parameters of blood flow in the middle cerebral artery in patients with ischemic stroke in triplex mode.

Materials and Methods: The results of dopplerometry of the middle cerebral artery (MCA) were studied in 69 patients with ischemic stroke. The age of the patients varied within 41-60 years (the average age 53,4±3,7), of which 41 (59.4%) were men and 28 (40.6%) were women. The MCA diameter, end systolic (Vs) and diastolic (Vd) velocities, mean systolic velocity (TAMX), resistance and pulsative indexis (RI, PI) of blood flow were calculated. The comporative group consisted of 41 patients without cardiovascular diseases, atherosclerotic plaques in carotid arteries of the same age (51,2±4,1 years).Doppler ultrasound was conducted on a Philips HD 11XE device using a sector (2 - 4 MHz) transducer.

Results: The diameter of the MCA on the side of ischemic stroke was 2.9±0.3 мм, on the contralateral side - 4.6±0.5 мм, and in a comparative group – 5.1±0.4 мм, respectively. In 56 (81.2+4.7%) cases Vs in the MCA did not exceed 70 cm/s and in average was 54.9±5.3cm/s. In 91,1% of this patients according to MRI data, the size of the affected lesion in the left hemisphere varied within 1.0-2.0 cm, in 8.9% of cases was less than 1.0 cm. In 13 (18.8+4.7%) cases of stroke Vs varied within 71-106 cm/s and averaged 86.7± 8.3 cm/s. In 30,8% of this patients the size of the affected lesion varied within 1.0-2.0 cm, in 69.2% of cases was less than 1.0 cm.

The resistive index (RI) of the blood flow in the MCA in a side of ischemic stroke was 0.71± 0.05, in a contralateral side - 0.56 ± 0.04 and in a comparative group - 0.53±0.04; the pulsative index (PI) -1.18±0.08; 0.91 ± 0.06 and 0.86 ± 0.05, respectively. The minute volume of blood flow (Vvol  cм3/мин) in the MCA was 39.5 ±7.6 cm3/min; 101.6 ±8.9cm3/min and 109.5 ±8.1 cm3/min, respectively.

Conclusion: Ischemic stroke in most cases occurs against the background of narrowing of the lumen of the middle cerebral artery, in which the maximum and average systolic blood flow velocity, the minute volume of blood flow on the side of the lesion is significantly lower than on the opposite side and in healthy individuals.

When comparing severe and mild stroke, a significant difference was also revealed between hemodynamic parameters towards a decrease in systolic velocity and volumetric blood flow in severe stroke.

Keywords: Transcranial Dopplerometry; Ischemic Stroke; Middle Cerebral Artery

References

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Citation: Abdullaiev RYa., et al. “Role of Transcranial Dopplerography in Stroke”. EC Neurology 13.4 (2021): 70-74.

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