Heterogeneity in infarct patterns and clinical outcomes following internal carotid artery occlusion. 2009

Thanh G Phan, and Geoffrey A Donnan, and Velandai Srikanth, and Jian Chen, and David C Reutens
National Stroke Research Institute and University of Melbourne, Melbourne, Australia. thanh.phan@med.monash.edu.au

OBJECTIVE To investigate whether the extent of infarction and clinical outcomes after internal carotid artery (ICA) occlusion depends on the additional occlusion of the middle cerebral artery (MCA). METHODS Using statistical parametric mapping, we compared infarct patterns in stroke patients. METHODS A tertiary care hospital. METHODS Patients with coexistent ICA and MCA occlusion (n = 25), isolated ICA occlusion (n = 20), and isolated MCA occlusion (n = 40). METHODS Modified Rankin scale score. The independent effect of infarct type on clinical outcome was estimated using logistic regression, adjusting for age and sex. RESULTS The mean age was 62.6 years (standard deviation [SD], 15.5 years) in patients with ICA and MCA occlusion, 64.3 years (SD, 12.9 years) in patients with isolated ICA occlusion, and 67.4 years (SD, 14.2 years) in patients with isolated MCA occlusion. Infarct patterns, volume (P = .13), and the proportion of patients with poor outcomes (P = .5) were similar between those with ICA and MCA occlusions and those with isolated MCA occlusion. Compared with the other 2 groups, those with isolated ICA occlusion were less likely to have infarction of the insula (P < .001) and superior temporal lobe (P < .001) and had smaller infarct volume and lower modified Rankin scale scores (all P < .05). Compared with those with isolated ICA occlusion, the risk of poor clinical outcome was greater in those with coexistent ICA and MCA occlusion (P = .02) and those with isolated MCA occlusion (P = .06) independent of age and sex. CONCLUSIONS Patients with ICA occlusion but without coexistent MCA occlusion have different infarct patterns, less extensive infarcts, and better clinical outcomes than those with coexistent MCA occlusion or MCA occlusion alone. It may not be warranted to exclude such patients from acute stroke trials.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002340 Carotid Artery Diseases Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology. Carotid Atherosclerosis,Common Carotid Artery Disease,Internal Carotid Artery Disease,Arterial Diseases, Carotid,Arterial Diseases, Common Carotid,Arterial Diseases, External Carotid,Arterial Diseases, Internal Carotid,Atherosclerotic Disease, Carotid,Carotid Artery Disorders,Carotid Atherosclerotic Disease,Common Carotid Artery Diseases,External Carotid Artery Diseases,Internal Carotid Artery Diseases,Arterial Disease, Carotid,Artery Disease, Carotid,Artery Diseases, Carotid,Artery Disorder, Carotid,Artery Disorders, Carotid,Atherosclerotic Diseases, Carotid,Carotid Arterial Disease,Carotid Arterial Diseases,Carotid Artery Disease,Carotid Artery Disorder,Carotid Atheroscleroses,Carotid Atherosclerotic Diseases,Disorders, Carotid Artery
D002343 Carotid Artery, Internal Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose. Arteries, Internal Carotid,Artery, Internal Carotid,Carotid Arteries, Internal,Internal Carotid Arteries,Internal Carotid Artery
D002544 Cerebral Infarction The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction). Anterior Choroidal Artery Infarction,Cerebral Infarct,Infarction, Cerebral,Posterior Choroidal Artery Infarction,Subcortical Infarction,Cerebral Infarction, Left Hemisphere,Cerebral Infarction, Right Hemisphere,Cerebral, Left Hemisphere, Infarction,Cerebral, Right Hemisphere, Infarction,Infarction, Cerebral, Left Hemisphere,Infarction, Cerebral, Right Hemisphere,Infarction, Left Hemisphere, Cerebral,Infarction, Right Hemisphere, Cerebral,Left Hemisphere, Cerebral Infarction,Left Hemisphere, Infarction, Cerebral,Right Hemisphere, Cerebral Infarction,Right Hemisphere, Infarction, Cerebral,Cerebral Infarctions,Cerebral Infarcts,Infarct, Cerebral,Infarction, Subcortical,Infarctions, Cerebral,Infarctions, Subcortical,Infarcts, Cerebral,Subcortical Infarctions
D002561 Cerebrovascular Disorders A spectrum of pathological conditions of impaired blood flow in the brain. They can involve vessels (ARTERIES or VEINS) in the CEREBRUM, the CEREBELLUM, and the BRAIN STEM. Major categories include INTRACRANIAL ARTERIOVENOUS MALFORMATIONS; BRAIN ISCHEMIA; CEREBRAL HEMORRHAGE; and others. Brain Vascular Disorders,Intracranial Vascular Disorders,Vascular Diseases, Intracranial,Cerebrovascular Diseases,Cerebrovascular Insufficiency,Cerebrovascular Occlusion,Brain Vascular Disorder,Cerebrovascular Disease,Cerebrovascular Disorder,Cerebrovascular Insufficiencies,Cerebrovascular Occlusions,Disease, Cerebrovascular,Diseases, Cerebrovascular,Insufficiencies, Cerebrovascular,Insufficiency, Cerebrovascular,Intracranial Vascular Disease,Intracranial Vascular Diseases,Intracranial Vascular Disorder,Occlusion, Cerebrovascular,Occlusions, Cerebrovascular,Vascular Disease, Intracranial,Vascular Disorder, Brain,Vascular Disorder, Intracranial,Vascular Disorders, Brain,Vascular Disorders, Intracranial
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D016896 Treatment Outcome Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series. Rehabilitation Outcome,Treatment Effectiveness,Clinical Effectiveness,Clinical Efficacy,Patient-Relevant Outcome,Treatment Efficacy,Effectiveness, Clinical,Effectiveness, Treatment,Efficacy, Clinical,Efficacy, Treatment,Outcome, Patient-Relevant,Outcome, Rehabilitation,Outcome, Treatment,Outcomes, Patient-Relevant,Patient Relevant Outcome,Patient-Relevant Outcomes

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