Transcranial dopplerography in acute left-hemispheric ischemic stroke

Abstract

In patients with hemispheric chemical stroke, stenosis of the middle cerebral artery is often observed, a systolic blood flow velocity less than 70 cm/s, an increase in the resistance and pulsation index. On the contralateral side, in persons up to 60 years of age, the blood flow velocity may be slightly increased in comparison with healthy individuals. Reduction of systolic blood flow velocity, increase in resistance index more than 0.70, pulsative index more than 1.35, presence of deep incision on Doppler spectrum of blood flow in middle cerebral artery are prognostic signs of unfavorable course of ischemic stroke. With ischemic stroke on the side of the lesion, visualization of the deep veins of the brain improves because of the increase in speed in them