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J Neurol Surg A Cent Eur Neurosurg 2021; 82(06): 505-511
DOI: 10.1055/s-0040-1720985
Original Article

Changes in Cognition and Hemodynamics 1 Year after Carotid Endarterectomy for Asymptomatic Stenosis

Petr Košťál
1   Department of Neurosurgery, Hospital České Budějovice, České Budějovice, Czech Republic
2   Department of Neurosurgery, University Hospital Plzeň, Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
,
Tomáš Mrhálek
3   Department of Pedagogy and Psychology, University of South Bohemia, České Budějovice, Czech Republic
,
Alena Kajanová
4   Institute of Social and Special-pedagogical Sciences, University of South Bohemia, České Budějovice, Czech Republic
,
Martin Bombic
1   Department of Neurosurgery, Hospital České Budějovice, České Budějovice, Czech Republic
5   Department of Neurosurgery, University Hospital Brno, Medical School of Masaryk University in Brno, Brno, Czech Republic
,
Jiří Kubále
6   Department of Radiology, Hospital České Budějovice, České Budějovice, Czech Republic
,
Luděk Šterba
6   Department of Radiology, Hospital České Budějovice, České Budějovice, Czech Republic
,
Svatopluk Ostrý
7   Department of Neurology, Hospital České Budějovice, České Budějovice, Czech Republic
8   Department of Neurosurgery and Neurooncology, 1st Medical School of Charles University in Prague and Military Hospital in Prague, Prague, Czech Republic
9   Institute of Physiotherapy and Selected Medical Disciplines, Faculty of Health and Social Studies, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic
,
Jiří Fiedler 
1   Department of Neurosurgery, Hospital České Budějovice, České Budějovice, Czech Republic
2   Department of Neurosurgery, University Hospital Plzeň, Faculty of Medicine in Pilsen, Charles University in Prague, Prague, Czech Republic
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Abstract

Objectives The impact of a change in hemodynamics on cognitive skills in patients with asymptomatic carotid stenosis (ACS) after carotid endarterectomy (CEA) remains unclear. The aim of this study was to evaluate the results of CEA for ACS at 1 year by assessing the changes in anterior, middle, and posterior cerebral artery blood flow in tandem with changes in cognitive efficiency.

Methods Flow volume in cerebral arteries using quantitative magnetic resonance angiography was measured in a group of 14 males and 5 females before and at 1 year after CEA for ACS. Cognitive efficiency was assessed by Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). The values of flow volume were processed using simple ratio (SR) and were used for covariance analyses with changes in cognitive skills after CEA.

Results A significant improvement in cognitive efficiency indexes of immediate memory and visuospatial perception at 1 year after CEA for ACS was observed. Simultaneously, a significant deterioration of speech index was noted. During the analysis of association between flow and cognition, the highest correlation could be seen between the middle cerebral artery (MCA) flow and the visuospatial perception. A change in posterior cerebral artery (PCA) flow was associated with an increase in immediate memory index and anterior cerebral artery (ACA) flow change with the speech index.

Conclusion Convergence of data supporting the association between revascularization and cognitive improvement were added in a small, single-center cohort of ACS patients undergoing CEA. No significant differences in cognition were seen between preoperative findings and at 1 year after CEA. Visuospatial perception improvement was linked to flow change in MCA, immediate memory improvement to flow change in PCA, and speech index change to flow change in ACA. Methodical limitations of this small study preclude formulating larger generalizations. Hemodynamic factors in CEA should be assessed in a larger-scale study.

Keywords

carotid endarterectomy - carotid stenosis - cognitive dissonance - quantitative magnetic resonance angiography


Publication History

Received: 16 August 2019

Accepted: 12 March 2020

Article published online:
14 February 2021

© 2021. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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