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open access

Vol 7, No 1 (2005)
Prace poglądowe
Published online: 2004-10-13
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Dynamics of blood flow velocity changes evaluated with Doppler method in cerebral arteries in acute phase of stroke

Zofia Kazibutowska, Anna Gołba, Anetta Bal, Ewa Motta, Marek Dębski
Udar Mózgu. Problemy Interdyscyplinarne 2005;7(1):10-17.

open access

Vol 7, No 1 (2005)
Prace poglądowe
Published online: 2004-10-13

Abstract

To evaluate with Doppler method the dynamics of blood flow velocity changes within and outside the blood supply area of ischaemic focus forty-one patients admitted to hospital within 24 hours of tomographically confirmed ischaemic stroke confined to the common carotid artery territory were studied. All patients underwent: daily neurological and general physical examination, two computed tomography scans on day 1, and 10–14 days following accident, Doppler evaluation according on day 1, 2, 3, 4, and 14 from cerebrovascular event. The patients were classified into three groups according to Doppler findings. Group A included 10 patients with blood flow alterations suggestive of ICA stenosis or occlusion Thirteen patients with flow characteristics suggestive of occlusion or stenosis of MCA constituted group B. Those 18 patients with blood flow changes in small cerebral arteries were classified as group C. The measurable dynamics of blood flow velocity changes in MCA of affected hemisphere was observed only in group B. Sequential Doppler examination can be used to monitor blood flow velocity changes in cerebral arteries in acute phase of stroke and in some patients revealed the dynamic pattern. Dynamics of blood flow velocity changes in cerebral arteries in acute phase of stroke depends on the pattern of blood flow at the beginning of stroke and occurs mainly in patients with large artery lesion. In patients with internal carotid artery and middle cerebral artery lesion. Doppler examination reveals improvement in blood flow in these arteries and development of collateral blood supply in consecutive days.

Abstract

To evaluate with Doppler method the dynamics of blood flow velocity changes within and outside the blood supply area of ischaemic focus forty-one patients admitted to hospital within 24 hours of tomographically confirmed ischaemic stroke confined to the common carotid artery territory were studied. All patients underwent: daily neurological and general physical examination, two computed tomography scans on day 1, and 10–14 days following accident, Doppler evaluation according on day 1, 2, 3, 4, and 14 from cerebrovascular event. The patients were classified into three groups according to Doppler findings. Group A included 10 patients with blood flow alterations suggestive of ICA stenosis or occlusion Thirteen patients with flow characteristics suggestive of occlusion or stenosis of MCA constituted group B. Those 18 patients with blood flow changes in small cerebral arteries were classified as group C. The measurable dynamics of blood flow velocity changes in MCA of affected hemisphere was observed only in group B. Sequential Doppler examination can be used to monitor blood flow velocity changes in cerebral arteries in acute phase of stroke and in some patients revealed the dynamic pattern. Dynamics of blood flow velocity changes in cerebral arteries in acute phase of stroke depends on the pattern of blood flow at the beginning of stroke and occurs mainly in patients with large artery lesion. In patients with internal carotid artery and middle cerebral artery lesion. Doppler examination reveals improvement in blood flow in these arteries and development of collateral blood supply in consecutive days.
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Keywords

transcranial Doppler ultrasonography; blood flow velocity; cerebral ischaemia

About this article
Title

Dynamics of blood flow velocity changes evaluated with Doppler method in cerebral arteries in acute phase of stroke

Journal

Interdisciplinary Problems of Stroke

Issue

Vol 7, No 1 (2005)

Pages

10-17

Published online

2004-10-13

Bibliographic record

Udar Mózgu. Problemy Interdyscyplinarne 2005;7(1):10-17.

Keywords

transcranial Doppler ultrasonography
blood flow velocity
cerebral ischaemia

Authors

Zofia Kazibutowska
Anna Gołba
Anetta Bal
Ewa Motta
Marek Dębski

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