Association of aortic plaque with intracranial atherosclerosis in patients with stroke
1Department of Neurology and National Core Research Center for Nanomedical Technology, Yonsei University College of Medicine, Seoul, Korea.
Insights
Simple aortic plaques (SAP) are linked to intracranial atherosclerosis, a stroke risk factor. Detecting SAP during transesophageal echocardiography may indicate advanced vascular disease and aid in stroke prevention strategies.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Vascular Biology
Background:
- Aortic plaques are associated with cerebrovascular events.
- Intracranial atherosclerosis is a significant risk factor for stroke.
Purpose of the Study:
- To investigate the relationship between aortic plaques and intracranial atherosclerosis.
- To determine if aortic plaque characteristics predict intracranial atherosclerosis.
Main Methods:
- Retrospective review of 922 stroke patients undergoing transesophageal echocardiography and cerebral angiography.
- Classification of aortic plaques as simple (SAP) or complex (CAP).
- Assessment of intracranial (IC) or extracranial (EC) atherosclerosis via angiography.
Main Results:
- Aortic plaques were found in 26% of patients.
- Simple aortic plaques (SAP) were significantly associated with intracranial atherosclerosis (OR=1.94).
- SAP independently predicted IC atherosclerosis in logistic regression analysis.
Conclusions:
- Simple aortic plaques may serve as a marker for advanced vascular disease.
- Detection of SAP during echocardiography has clinical implications for identifying patients at risk for stroke due to concomitant intracranial atherosclerosis.
Objective:
To determine whether there is a relationship between aortic plaques and intracranial (IC) atherosclerosis.
Methods:
We reviewed 922 patients with stroke who had both transesophageal echocardiography and cerebral angiography. The plaques of these patients were classified as either complex aortic plaques (CAP), which protruded > or =4 mm or were present as mobile lesions in the proximal aorta, or simple aortic plaques (SAP), which were <4 mm or present in the descending aorta. Cerebral artery atherosclerosis was classified as either an IC or extracranial (EC) atherosclerosis.
Results:
Among the 922 patients, we found aortic plaques in 237 patients (26%). There were 111 (47%) patients of SAP, 74 (31%) patients with CAP, and 52 (22%) patients that had both SAP and CAP. Angiography showed IC or EC atherosclerosis in 511 patients (55%). The presence of aortic plaques was significantly associated with IC or EC atherosclerosis. The significance appeared to be due to the strong association between the presence of SAP and IC atherosclerosis (51% SAP vs 35% no plaques; odds ratio = 1.94, 95% CI: 1.17 to 3.21). In the multiple logistic regression analysis, SAP were independent predictors of IC atherosclerosis
Conclusions:
The presence of simple aortic plaques may be a marker of advanced vascular disease. Detection of simple aortic plaques during transesophageal echocardiography may have clinical implications because patients with these plaques frequently had concomitant intracranial atherosclerosis, a risk factor for stroke.
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