open access

Vol 63, No 10 (2005)
Other
Published online: 2005-10-21
Submitted: 2012-12-28
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ORIGINAL ARTICLE
Evaluation of cerebral circulation in patients with significant carotid artery stenosis

Anna Kabłak-Ziembicka, Tadeusz Przewłocki, Rafał Motyl, Rafał Rudko, Wiesława Tracz
Kardiol Pol 2005;63(10):381-389.

open access

Vol 63, No 10 (2005)
Other
Published online: 2005-10-21
Submitted: 2012-12-28

Abstract

Background: A significant proportion of ischaemic stroke episodes are caused by atherosclerotic lesions in extracranial arteries. Assessment of haemodynamical profile of cerebral arteries in both symptomatic and asymptomatic patients with carotid artery stenosis is of clinical importance. Aim: To assess haemodynamic changes in cerebral arteries in patients with significant internal carotid artery (ICA) stenosis. Method: Patients (n=109) were divided into the following groups: group I (GI) – 42 subjects (64.6±9.0 years) with asymptomatic ICA stenosis ł70%; and group II (GII) – 67 subjects (63.4±7.1 years) after stroke. The control group consisted of 30 patients (60.3±8.9 years) without significant stenoses of extracranial arteries on USG and angiography. In all cases ultrasonographic evaluation of flow velocities and directions in cerebral arteries within the circle of Willis and collateral flow was performed. Results: The severity of ICA stenosis did not differ significantly between GI and GII. Patients in GI had flow velocity in the middle cerebral artery (MCA) increased by 15.7% and by 40.8% in the anterior cerebral artery (ACA) contralateral to the ICA stenosis (p

Abstract

Background: A significant proportion of ischaemic stroke episodes are caused by atherosclerotic lesions in extracranial arteries. Assessment of haemodynamical profile of cerebral arteries in both symptomatic and asymptomatic patients with carotid artery stenosis is of clinical importance. Aim: To assess haemodynamic changes in cerebral arteries in patients with significant internal carotid artery (ICA) stenosis. Method: Patients (n=109) were divided into the following groups: group I (GI) – 42 subjects (64.6±9.0 years) with asymptomatic ICA stenosis ł70%; and group II (GII) – 67 subjects (63.4±7.1 years) after stroke. The control group consisted of 30 patients (60.3±8.9 years) without significant stenoses of extracranial arteries on USG and angiography. In all cases ultrasonographic evaluation of flow velocities and directions in cerebral arteries within the circle of Willis and collateral flow was performed. Results: The severity of ICA stenosis did not differ significantly between GI and GII. Patients in GI had flow velocity in the middle cerebral artery (MCA) increased by 15.7% and by 40.8% in the anterior cerebral artery (ACA) contralateral to the ICA stenosis (p
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Keywords

internal carotid artery stenosis; collateral flow through the circle of Willis; transcranial Doppler ultrasonography; asymptomatic patients; symptomatic patients

About this article
Title

ORIGINAL ARTICLE
Evaluation of cerebral circulation in patients with significant carotid artery stenosis

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 63, No 10 (2005)

Pages

381-389

Published online

2005-10-21

Bibliographic record

Kardiol Pol 2005;63(10):381-389.

Keywords

internal carotid artery stenosis
collateral flow through the circle of Willis
transcranial Doppler ultrasonography
asymptomatic patients
symptomatic patients

Authors

Anna Kabłak-Ziembicka
Tadeusz Przewłocki
Rafał Motyl
Rafał Rudko
Wiesława Tracz

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