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  • Title: Association between stroke and atrial septal aneurysm assessed by transesophageal echocardiography in a cardiologic population.
    Author: Ossemann M, Laloux P, Marchandise B, Jamart J.
    Journal: Acta Neurol Belg; 1995; 95(3):170-7. PubMed ID: 7484054.
    Abstract:
    Atrial septal aneurysm (ASA) is now recognized as a source of emboli. Its prevalence in a general population remains controversial. We assessed, in a cardiologic population, the prevalence of ASA, the association with cerebrovascular events, the role of associated interatrial shunting and age. Four hundred and ninety-four consecutive patients were referred for transesophageal echocardiography with contrast. The prevalence of ASA in two groups, with (A) and without (B) cerebrovascular events were compared. In group A, we studied the prevalence of ASA according to the clinical presentation (stroke, TIA and peripheral emboli in limbs). An ASA was found in 38 patients (8%). The prevalence of ASA was higher in group A (16%) than in group B (4%) (p < 10(-5)). Prevalence of ASA was not significantly different in stroke, TIA and peripheral emboli subgroups. There was no difference in prevalence of ASA in stroke or TIA subgroups according whether age was < 55 years or > or = 55 years. Prevalence of all types of vascular events was increased when ASA was associated with an interatrial shunt. Our results support the assumption that ASA is a potential source of cerebrovascular events, whatever the clinical presentation or age. Presence of interatrial shunt increases the risk of stroke in subjects with ASA.
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